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CCNP ROUTE 300-101

(v9.0 - 149 Q&A)

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Cisco 300-101 Exam
Topic 1, Network Principles

QUESTION NO: 1

Refer to the exhibit.

Based on this FIB table, which statement is correct?

A. There is no default gateway.
B. The IP address of the router on FastEthernet is 209.168.201.1.
C. The gateway of last resort is 192.168.201.1.
D. The router will listen for all multicast traffic.

Answer: C
Explanation:

The 0.0.0.0/0 route is the default route and is listed as the first CEF entry. Here we see the next
hop for this default route lists 192.168.201.1 as the default router (gateway of last resort).

QUESTION NO: 2

Refer to the exhibit.

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Cisco 300-101 Exam
A network administrator checks this adjacency table on a router. What is a possible cause for the
incomplete marking?

A. incomplete ARP information
B. incorrect ACL
C. dynamic routing protocol failure
D. serial link congestion

Answer: A
Explanation:

To display information about the Cisco Express Forwarding adjacency table or the hardware Layer
3-switching adjacency table, use the show adjacency command.
Reasons for Incomplete Adjacencies
There are two known reasons for an incomplete adjacency:
No ARP Entry
When CEF cannot locate a valid adjacency for a destination prefix, it punts the packets to the CPU
for ARP resolution and, in turn, for completion of the adjacency.

Reference: http://www.cisco.com/c/en/us/support/docs/ip/express-forwarding-cef/17812-cef-
incomp.html#t4

QUESTION NO: 3

A network engineer notices that transmission rates of senders of TCP traffic sharply increase and
decrease simultaneously during periods of congestion. Which condition causes this?

A. global synchronization
B. tail drop
C. random early detection
D. queue management algorithm

Answer: A
Explanation:

TCP global synchronization in computer networks can happen to TCP/IP flows during periods of
congestion because each sender will reduce their transmission rate at the same time when packet
loss occurs.
Routers on the Internet normally have packet queues, to allow them to hold packets when the
network is busy, rather than discarding them.

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info 4 . the queue is constantly full. Cisco 300-101 Exam Because routers have limited resources. This effect is called TCP-starvation/UDP-dominance. This causes problems when used on TCP/IP routers handling multiple TCP streams. and there are no problems except that the full queue results in high latency.C.CareerCert. the size of these queues is also limited. windowing E. especially when bursty traffic is present. While the network is stable. This can increase latency and lower the overall throughput. jitter C. www. The simplest technique to limit queue size is known as tail drop. as WRED (for the most part) only affects TCP-based flows. TCP-starvation/UDP-dominance likely occurs if (TCP-based) mission-critical data is assigned to the same service provider class as (UDP-based) streaming video and the class experiences sustained congestion. Although some UDP applications have application-level windowing. However. latency D. potentially giving up their bandwidth to drop-oblivious UDP flows. and then any new packets are simply discarded.wikipedia. When TCP flows are combined with UDP flows in a single service provider class and the class experiences congestion. most UDP transmitters are completely oblivious to drops and thus never lower transmission rates due to dropping. Even if WRED is enabled on the service provider class. TCP transmitters will throttle-back flows when drops have been detected. and retransmission capabilities. flow control. starvation B. The queue is allowed to fill to its maximum size. lower throughput Answer: A. the same behavior would be observed.org/wiki/TCP_global_synchronization QUESTION NO: 4 Which three problems result from application mixing of UDP and TCP streams within a network with no QoS? (Choose three.) A. until there is space in the queue again.E Explanation: It is a general best practice not to mix TCP-based traffic with UDP-based traffic (especially streaming video) within a single service provider class due to the behaviors of these protocols during periods of congestion. steady streams to lose packets simultaneously. then TCP flows will continually lower their rates. Specifically. Reference: http://en. the introduction of a sudden burst of traffic may cause large numbers of established.

Benefits: • Native dual stack does not require any tunneling mechanisms on internal networks • Both IPv4 and IPv6 run independent of each other • Dual stack supports gradual migration of endpoints. Tunneling is more difficult to configure than dual stack or translation. 6to4 tunneling C.pdf QUESTION NO: 6 Which statement about the use of tunneling to migrate to IPv6 is true? A. it is not always possible to separate TCP-based flows from UDP-based flows. Reference: http://www. C. www. Cisco 300-101 Exam Granted.cisco. B.com/web/strategy/docs/gov/IPV6at_a_glance_c45-625859. For sessions that support IPv6.cisco. Reference: http://www.CareerCert.info 5 . Tunneling is less secure than dual stack or translation. then IPv4 is used. so it offers a very flexible coexistence strategy.htm QUESTION NO: 5 Which method allows IPv4 and IPv6 to work together without requiring both to be used for a single connection during the migration process? A. dual-stack method B. and applications. networks. NAT-PT Answer: A Explanation: Dual stack means that devices are able to run IPv4 and IPv6 in parallel. IPv6 is used on a dual stack endpoint. If both endpoints support Ipv4 only. It allows hosts to simultaneously reach IPv4 and IPv6 content. Tunneling does not enable users of the new protocol to communicate with users of the old protocol without dual-stack hosts. but it is beneficial to be aware of this behavior when making such application-mixing decisions. GRE tunneling D.com/warp/public/cc/so/neso/vpn/vpnsp/spqsd_wp.

info 6 . thus providing connectivity between users of the new protocol. • Tunneling does not enable users of the new protocol to communicate with users of the old protocol without dual-stack hosts. Reference: http://www. ARP cache D.html QUESTION NO: 7 A network administrator executes the command clear ip route.com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6- solution/white_paper_c11-676278. Answer: C Explanation: Using the tunneling option.) A. use the following commands in any mode: Command Purpose clear ip route {* | {route | prefix/length}[next-hop interface]} [vrf vrf-name] www. topology table Answer: A. as discussed in RFC 6144: • Users of the new architecture cannot use the services of the underlying infrastructure. MAC address table E.cisco. Cisco 300-101 Exam D. FIB C. Which two tables does this command clear and rebuild? (Choose two. organizations build an overlay network that tunnels one protocol over the other by encapsulating IPv6 packets within IPv4 packets and IPv4 packets within IPv6 packets. Tunneling destinations are manually determined by the IPv4 address in the low-order 32 bits of IPv4-compatible IPv6 addresses. Tunneling has two disadvantages. The advantage of this approach is that the new protocol can work without disturbing the old protocol.CareerCert.B Explanation: To clear one or more entries in the IP routing table. which negates interoperability. IP routing B. Cisco Express Forwarding table F.

info ast switching.2. alphanumeric string up to 32 characters.2 Clears one or more routes from both the unicast RIB and all the module FIBs.CareerCert. Reference: http://www. Destination addresses are stored in the high-speed cache to expedite forwarding. fast switching B. Routers offer better packet-transfer performance when fast switching is enabled. The route options are as follows: • *—All routes.2. Cisco Express Forwarding switching D. • route—An individual IP route. • prefix/length—Any IP prefix. The vrf-name can be any case-sensitive. Cisco 300-101 Exam Example: switch(config)# clear ip route 10. process switching C.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/unicast/5_0_3_N1_1/Cis co_n5k_layer3_ucast_cfg_rel_503_N1_1/l3_manage-routes.html QUESTION NO: 8 Which switching method is used when entries are present in the output of the command show ip cache? A. cut-through packet switching Answer: A Explanation: Fast switching allows higher throughput by switching a packet using a cache created by the initial packet sent to a particular destination. Fast switchin www. 7 . • next-hop—The next-hop address • interface—The interface to reach the next-hop address.cisco.

E. The window scaling extension in Cisco IOS software expands the definition of the TCP window to 32 bits and then uses a scale factor to carry this 32-bit value in the 16-bit window field of the TCP header. The larger scalable window size will allow TCP to perform better over LFNs. Typical applications use a scale factor of 3 when deployed in LFNs. A larger window size is recommended to improve TCP performance in network paths with large bandwidth-delay product characteristics that are called Long Fat Networks (LFNs).info 8 .) A. the remote host must also support this feature and its window size must be increased.) www.html#GUID-BD998AC6-F128-47DD-B5F7-B226546D4B08 QUESTION NO: 10 Which three TCP enhancements can be used with TCP selective acknowledgments? (Choose three. Set window scaling to be used on the remote host.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/12-4t/iap-12-4t- book/iap-tcp. In order for this to work.com/c/en/us/td/docs/ios/12_2/switch/command/reference/fswtch_r/xrfscmd5. Set TCP options to "enabled" on the remote host. Execute the command ip tcp adjust-mss. D. Answer: A.cisco. Execute the command ip tcp queuemax.B Explanation: The TCP Window Scaling feature adds support for the Window Scaling option in RFC 1323. Execute the command ip tcp window-size 65536. C. The TCP Window Scaling enhancement provides that support.html #wp1038133 QUESTION NO: 9 Which two actions must you perform to enable and use window scaling on a router? (Choose two.cisco. The window size can increase to a scale factor of 14. Use the ip tcp window-size command in global configuration mode to configure the TCP window size. Cisco 300-101 Exam Reference: http://www. The TCP Window Scaling feature complies with RFC 1323. B. TCP Extensions for High Performance. Reference: http://www.CareerCert.

if TCP lost packets 4 and 7 out of an 8-packet window. TCP would receive acknowledgment of only packets 1. time stamps E. There is no performance impact when the feature is enabled but not used. header compression B. explicit congestion notification C. The TCP selective acknowledgment mechanism helps improve performance. Prior to this feature. Use the ip tcp ecn command in global configuration mode to www. the TCP time-stamp option is disabled. because of limited information available from cumulative acknowledgments. The sender can then resend only missing data segments (instead of everything since the first missing packet). 6. TCP header compression will not compress the outgoing packet. and 8. The receiving TCP host returns selective acknowledgment packets to the sender. keepalive D. informing the sender of data that has been received. MTU window Answer: B. such as Telnet. but such re-sent segments might have already been successfully received. Use the ip tcp selective-ack command in global configuration mode to enable TCP selective acknowledgment. Packets 4 through 8 would need to be re-sent. Because the time stamps are always sent and echoed in both directions and the time-stamp value in the header is always changing. TCP Time Stamp The TCP time-stamp option provides improved TCP round-trip time measurements. Cisco 300-101 Exam A.D Explanation: TCP Selective Acknowledgment The TCP Selective Acknowledgment feature improves performance if multiple packets are lost from one TCP window of data. 3. web browsing. To allow TCP header compression over a serial link. a TCP sender could learn about only one lost packet per-round-trip time.CareerCert. Refer to RFC 2018 for more details about TCP selective acknowledgment.C.info 9 . and 3. It also provides enhanced support for TCP sessions associated with applications. 2. The benefit of this feature is the reduction of delay and packet loss in data transmissions. TCP selective acknowledgment is used only when multiple packets are dropped within one TCP window. the receiver can acknowledge packets received out of order. TCP receives acknowledgment of packets 1. Prior to selective acknowledgment. With selective acknowledgment. An aggressive sender could choose to resend packets early. and transfer of audio and video data that are sensitive to delay or packet loss. In other words. 5. Use the ip tcp timestamp command to enable the TCP time-stamp option. TCP path discovery F. 2. Only packets 4 and 7 must be re-sent. TCP Explicit Congestion Notification The TCP Explicit Congestion Notification (ECN) feature allows an intermediate router to notify end hosts of impending network congestion.

Several SNMP traps are available: round trip time. Each measurement operation can monitor against a pre-set performance threshold. connectionless communication D. If a response packet (a TCP ACK packet) is not received after the device sends a specific number of probes. average jitter. the device sends a TCP keepalive packet to the peer with only the Acknowledgment (ACK) flag turned on.cisco.845 UTC Thu Feb 3 2005 Latest operation return code: OK RTT Values: www. Which UDP characteristic does this scenario describe? A.html#GUID-22A82C5F-631F-4390-9838- F2E48FFEEA01 QUESTION NO: 11 A network administrator uses IP SLA to measure UDP performance and notices that packets on one router have a higher one-way delay compared to the opposite direction. one-way latency. starvation C.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/xe- 3s/asr1000/iap-xe-3s-asr1000-book/iap-tcp. nonsequencing unordered packets E. latency B. jitter Answer: A Explanation: Cisco IOS IP SLAs provides a proactive notification feature with an SNMP trap.CareerCert. MOS. packet loss. Reference: http://www. Cisco 300-101 Exam enable TCP ECN. jitter. Here is a partial sample output from the IP SLA statistics that can be seen: router#show ip sla statistics 1 Round Trip Time (RTT) for Index 55 Latest RTT: 1 ms Latest operation start time: *23:43:31.info 10 . Cisco IOS IP SLAs generates an SNMP trap to alert management applications if this threshold is crossed. When a TCP connection on a routing device is idle for too long. the connection is considered dead and the device initiating the probes frees resources used by the TCP connection. TCP Keepalive Timer The TCP Keepalive Timer feature provides a mechanism to identify dead connections. and connectivity tests.

cisco. Reference: www. never lower transmission rates because of dropping. and retransmission capabilities. when ACLs are in place to block TCP traffic Answer: A Explanation: Mixing TCP with UDP It is a general best practice to not mix TCP-based traffic with UDP-based traffic (especially Streaming-Video) within a single service-provider class because of the behaviors of these protocols during periods of congestion. the same behavior would be observed because WRED (for the most part) manages congestion only on TCP-based flows. most UDP transmitters are completely oblivious to drops and. Although some UDP applications have application-level windowing. flow control. when WRED is enabled D. Specifically. This effect is called TCP starvation/UDP dominance. when UDP flows are assigned a lower priority queue C. When TCP flows are combined with UDP flows within a single service-provider class and the class experiences congestion.com/en/US/technologies/tk648/tk362/tk920/technologies_white_paper09186a008 02d5efe. Even if WRED is enabled on the service-provider class.CareerCert. TCP starvation/UDP dominance likely occurs if (TCP-based) Mission-Critical Data is assigned to the same service-provider class as (UDP-based) Streaming-Video and the class experiences sustained congestion. Cisco 300-101 Exam Number Of RTT: 10 RTT Min/Avg/Max: 1/1/1 milliseconds Latency one-way time: Number of Latency one-way Samples: 0 Source to Destination Latency one way Min/Avg/Max: 0/0/0 milliseconds Destination to Source Latency one way Min/Avg/Max: 0/0/0 milliseconds Reference: http://www. thus. potentially giving up their bandwidth to UDP flows that are oblivious to drops.html QUESTION NO: 12 Under which condition does UDP dominance occur? A.info 11 . TCP transmitters throttle back flows when drops are detected. TCP flows continually lower their transmission rates. when TCP traffic is in the same class as UDP B.

vpdn enable 4. Enable QoS FIFO for PPPoE support. request-dialin 6. B.info 12 Command or Action . Execute the vpdn enable command.cisco. C. D. SUMMARY STEPS 1. vpdn-group name 5. configure terminal 3.2(13)T. Answer: B Explanation: Enabling PPPoE in a VPDN Group Perform this task to enable PPPoE in a virtual private dial-up network (VPDN) group. Layer 2 Technologies QUESTION NO: 13 Prior to enabling PPPoE in a virtual private dialup network group.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS- SRND-Book/VPNQoS. which task must be completed? A. enable 2.CareerCert. Execute the no switchport command.html Topic 2. Disable CDP on the interface. Restrictions This task applies only to releases prior to Cisco IOS Release 12. protocol pppoe DETAILED STEPS www. Cisco 300-101 Exam http://www.

info 13 .html QUESTION NO: 14 A network engineer has been asked to ensure that the PPPoE connection is established and authenticated using an encrypted password. • Enter your password if prompted. Step 6 protocol pppoe Example: Router(config-vpdn-req-in)# protocol pppoe Enables the VPDN subgroup to establish PPPoE Reference: http://www. in combination with PPPoE. Step 3 vpdn enable Example: Router(config)# vpdn enable Enables virtual private dialup networking. Step 4 vpdn-group name Example: Router(config)# vpdn-group group1 Associates a VPDN group with a customer or VPDN profile.com/en/US/docs/ios/12_2t/12_2t2/feature/guide/ftpppoec_support_TSD_Island_o f_Content_Chapter.CareerCert. Step 5 request-dialin Example: Router(config-vpdn)# request-dialin Creates a request-dialin VPDN subgroup.cisco. Which technology. Step 2 configure terminal Example: Router# configure terminal Enters global configuration mode. can be used for authentication in this manner? www. Cisco 300-101 Exam Example: Router> enable Enables privileged EXEC mode.

dot1x C. This prevents other devices from stealing it and gaining illegal access to the ISP’s network. The access server then encrypts the concatenated information with the newly retrieved password—if the result matches the result sent in the response packet. The challenge packet consists of an ID. Cisco 300-101 Exam A.CareerCert. the two authentication options are PAP and CHAP. When the remote device receives the challenge packet. When CHAP is enabled on an interface and a remote device attempts to connect to it. it uses the name it received to retrieve a password stored in its user database. Peer Neighbor Route www. PAP B. Dialer Persistent C. even if no interesting traffic exists. authentication succeeds. PPPoE Groups D. the access server sends a CHAP packet to the remote device.info 14 . a random number. and the host name of the local router.html QUESTION NO: 15 A corporate policy requires PPPoE to be enabled and to maintain a connection with the ISP. and then encrypts all of it using the remote device’s password.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathen. Which feature can be used to accomplish this task? A.cisco. Ipsec D. ESP Answer: D Explanation: With PPPoE. along with the name associated with the password used in the encryption process. TCP Adjust B. The CHAP packet requests or “challenges” the remote device to respond. The retrieved password should be the same password the remote device used in its encryption process. the remote device’s password. CHAP E. When the access server receives the response. half-bridging E. Reference: http://www. and the random number. The remote device sends the results back to the access server. The benefit of using CHAP authentication is that the remote device’s password is never transmitted in clear text (encrypted). it concatenates the ID.

When configured. Step 4 Router(config-if)# dialer string dial-string class class-name Specifies the remote destination to call and the map class that defines characteristics for calls to this destination.CareerCert. If interesting traffic arrives before the timer expires. Step 6 Router(config-if)# dialer-group group-number Assigns the dialer interface to a dialer group. Step 7 Router(config-if)# dialer-list dialer-group protocol protocol-name {permit | deny | list access-list- number} Specifies an access list by list number or by protocol and list number to define the interesting packets that can trigger a call. allows a dial-on-demand routing (DDR) dialer profile connection to be brought up without being triggered by interesting traffic. The command provides a default timer interval. Step 3 Router(config-if)# encapsulation type Specifies the encapsulation type. the connection is still brought up and set as persistent. dialer persistent. Step 2 Router(config-if)# ip address address mask Specifies the IP address and mask of the dialer interface as a node in the destination network to be called. www. Cisco 300-101 Exam Answer: B Explanation: A new interface configuration command. or you can set a custom timer interval.info 15 . To configure a dialer interface as persistent. use the following commands beginning in global configuration mode: Command Purpose Step 1 Router(config)# interface dialer number Creates a dialer interface and enters interface configuration mode. Step 5 Router(config-if)# dialer pool number Specifies the dialing pool to use for calls to this destination. the dialer persistent command starts a timer when the dialer interface starts up and starts the connection when the timer expires.

the connection is terminated. on the other hand.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/10241-ppp- callin-hostname. CHAP authentication. Cisco 300-101 Exam Step 8 Router(config-if)# dialer remote-name user-name (Optional) Specifies the authentication name of the remote router on the destination subnetwork for a dialer interface. Step 9 Router(config-if)# dialer persistent [delay [initial] seconds | max-attempts number] Forces a dialer interface to be connected at all times. periodically verifies the identity of the remote node using a three-way handshake. The remote node responds with a value calc“lated usi”g a one-way hash function. CDPCP C. After the PPP link is established.html www.info 16 . the host sends a "challenge" message to the remote node. even in the absence of interesting traffic.com/c/en/us/td/docs/ios/dial/configuration/guide/12_4t/dia_12_4t_book/dia_dialer _persist.CareerCert.cisco. If the values match. MS CHAP B. The host checks the response against its own calculation of the expected hash value. CHAP D. hence. Reference: http://www. PAP Answer: D Explanation: PAP authentication involves a two-way handshake where the username and password are sent across the link in clear text. PAP authentication does not provide any protection against playback and line sniffing. Reference: http://www.cisco. the authentication is acknowledged. otherwise.html QUESTION NO: 16 Which PPP authentication method sends authentication information in clear text? A.

CareerCert. PPP options are not negotiated and authentication is performed.info 17 . PPP options are negotiated and authentication is performed. Answer: D Explanation: www. PPPoE functions as a Layer 4 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers. Reference: http://www. Frame Relay inverse ARP B. Once the link setup is completed. PPPoE functions as a Layer 2 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers. PPP options are negotiated and authentication is not performed.html QUESTION NO: 18 Which statement is true about the PPP Session Phase of PPPoE? A. PPP options are automatically enabled and authorization is performed. Once the link setup is completed. PPPoE functions as a Layer 3 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers. PPPoE functions as a Layer 2 encapsulation method that allows data to be encrypted over the PPP link within PPPoE headers. B. Once the link setup is completed. static DLCI mapping C. Once the link setup is completed. D. C. given its known DLCI.cisco. the table is then used to supply the next-hop protocol address or the DLCI for outgoing traffic. Responses to Inverse ARP requests are entered in an address-to-DLCI mapping table on the router or access server. Cisco 300-101 Exam QUESTION NO: 17 Which protocol uses dynamic address mapping to request the next-hop protocol address for a specific connection? A. Frame Relay broadcast queue D.com/c/en/us/td/docs/ios/12_2/wan/configuration/guide/fwan_c/wcffrely. dynamic DLCI mapping Answer: A Explanation: Dynamic address mapping uses Frame Relay Inverse ARP to request the next-hop protocol address for a specific connection.

Cisco 300-101 Exam

PPPoE is composed of two main phases:

Reference: http://www.cisco.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asa-vpn-
cli/vpn-pppoe.html

QUESTION NO: 19

PPPoE is composed of which two phases?

A. Active Authentication Phase and PPP Session Phase
B. Passive Discovery Phase and PPP Session Phase
C. Active Authorization Phase and PPP Session Phase
D. Active Discovery Phase and PPP Session Phase

Answer: D
Explanation:

PPPoE is composed of two main phases:

Reference: http://www.cisco.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asa-vpn-
cli/vpn-pppoe.html

Topic 3, Layer 3 Technologies

QUESTION NO: 20

Refer to the exhibit.

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Cisco 300-101 Exam

Which one statement is true?

A. Traffic from the 172.16.0.0/16 network will be blocked by the ACL.
B. The 10.0.0.0/8 network will not be advertised by Router B because the network statement for
the 10.0.0.0/8 network is missing from Router B.
C. The 10.0.0.0/8 network will not be in the routing table on Router B.
D. Users on the 10.0.0.0/8 network can successfully ping users on the 192.168.5.0/24 network,
but users on the 192.168.5.0/24 cannot successfully ping users on the 10.0.0.0/8 network.
E. Router B will not advertise the 10.0.0.0/8 network because it is blocked by the ACL.

Answer: E
Explanation:

You can filter what individual routes are sent (out) or received (in) to any interface within your
EIGRP configuration.
One example is noted above. If you filter outbound, the next neighbor(s) will not know about
anything except the 172.16.0.0/16 route and therefore won’t send it to anyone else downstream. If
you filter inbound, YOU won’t know about the route and therefore won’t send it to anyone else
downstream.

QUESTION NO: 21

A router with an interface that is configured with ipv6 address autoconfig also has a link-local
address assigned. Which message is required to obtain a global unicast address when a router is
present?

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Cisco 300-101 Exam
A. DHCPv6 request
B. router-advertisement
C. neighbor-solicitation
D. redirect

Answer: B
Explanation:

Autoconfiguration is performed on multicast-enabled links only and begins when a multicast-
enabled interface is enabled (during system startup or manually). Nodes (both, hosts and routers)
begin the process by generating a link-local address for the interface. It is formed by appending
the interface identifier to well-known link-local prefix FE80::0. The interface identifier replaces the
right-most zeroes of the link-local prefix.Before the link-local address can be assigned to the
interface, the node performs the Duplicate Address Detection mechanism to see if any other node
is using the same link-local address on the link. It does this by sending a Neighbor Solicitation
message with target address as the "tentative" address and destination address as the solicited-
node multicast address corresponding to this tentative address. If a node responds with a
Neighbor Advertisement message with tentative address as the target address, the address is a
duplicate address and must not be used. Hence, manual configuration is required.
Once the node verifies that its tentative address is unique on the link, it assigns that link-local
address to the interface. At this stage, it has IP-connectivity to other neighbors on this link.
The autoconfiguration on the routers stop at this stage, further tasks are performed only by the
hosts. The routers will need manual configuration (or stateful configuration) to receive site-local or
global addresses.
The next phase involves obtaining Router Advertisements from routers if any routers are present
on the link. If no routers are present, a stateful configuration is required. If routers are present, the
Router Advertisements notify what sort of configurations the hosts need to do and the hosts
receive a global unicast IPv6 address.

Reference: https://sites.google.com/site/amitsciscozone/home/important-tips/ipv6/ipv6-stateless-
autoconfiguration

QUESTION NO: 22

An engineer has configured a router to use EUI-64, and was asked to document the IPv6 address
of the router. The router has the following interface parameters:

mac address C601.420F.0007

subnet 2001:DB8:0:1::/64

www.CareerCert.info 20

info 21 . the address is locally administered and if 1. Cisco 300-101 Exam Which IPv6 addresses should the engineer add to the documentation? A. Therefore. This bit identifies whether this interface identifier is universally or locally administered. allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). It is worth noticing that in the OUI portion. IEEE has chosen FFFE as a reserved value which can only appear in EUI-64 generated from the EUI-48 MAC address.CareerCert. with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. Here is an example showing how the Mac Address is used to generate EUI. The reason for inverting can be found in RFC4291 section 2. the seventh bit from the left. when the bit is inverted. www. Next. This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. 2001:DB8:0:1:FFFF:C601:420F:7 C. If 0. 2001:DB8:0:1:C601:42FF:FE0F:7 B. needs to be inverted. 2001:DB8:0:1:C601:42FE:800F:7 Answer: A Explanation: Extended Unique Identifier (EUI). 2001:DB8:0:1:FE80:C601:420F:7 D.5. The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. as per RFC2373. it maintains its original scope (global unique address is still global unique and vice versa). The Mac address is first separated into two 24-bits. the globally unique addresses assigned by the IEEE has always been set to 0 whereas the locally created addresses has 1 configured.1. the address is globally unique. or the universal/local (U/L) bit.

B. OSPFv3 neighbor adjacencies were lost. The link-local addresses that were used by OSPFv3 were explicitly denied. C. The global anycast address must be added to the traffic filter to allow OSPFv3 to work properly. However. B.cisco. so if any Ipv6 traffic filters are implemented be sure to include the link local address so that it is permitted in the filter list. D. Answer: C Explanation: OSPFv3 uses link-local Ipv6 addresses for neighbor discovery and other features. which caused the neighbor relationships to fail.CareerCert.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx- os/unicast/configuration/guide/l3_cli_nxos/l3_ospfv3. shortly after implementing the traffic filter. It sets the global EIGRP autonomous system number. It sets the BGP autonomous system number in a VRF. It sets the global BGP autonomous system number. Reference: http://www. D. What caused this issue? A.html QUESTION NO: 24 What is the purpose of the autonomous-system {autonomous-system-number} command? A. C. Cisco 300-101 Exam Reference: https://supportforums. Ipv6 traffic filtering can be implemented only on SVIs. Answer: A Explanation: www.cisco. The traffic filter is blocking all ICMPv6 traffic.com/document/100566/understanding-ipv6-eui-64-bit- address QUESTION NO: 23 For security purposes.info 22 . It sets the EIGRP autonomous system number in a VRF. an Ipv6 traffic filter was configured under various interfaces on the local router.

it is important to remember that an NBMA network can be configured in these modes of operation with the ip ospf network command: The Hello and Dead Intervals of each mode are described in this table: Network Type Hello Interval (secs) Dead Interval (secs) Point-to-Point 10 40 Point-to-Multipoint 30 120 www. 40 Answer: A Explanation: Before you troubleshoot any OSPF neighbor-related issues on an NBMA network. 20 C. 10 B.info 23 .cisco.CareerCert.html# wp1062796 QUESTION NO: 25 What is the default OSPF hello interval on a Frame Relay point-to-point network? A. To remove the autonomous-system for an EIGRP routing process from within a VPN VRF instance. use the autonomous-system command in address-family configuration mode. 30 D. Autonomous-system autonomous-system-number no autonomous-system autonomous-system-number Reference: http://www. Cisco 300-101 Exam To configure the autonomous-system number for an Enhanced Interior Gateway Routing Protocol (EIGRP) routing process to run within a VPN routing and forwarding (VRF) instance.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/ire_book/ire_a1. use the no form of this command.

0/24 network out of FastEthernet 0/0? A.3.CareerCert. allowing only 1.cisco.2.html QUESTION NO: 26 Refer to the exhibit. Cisco 300-101 Exam Broadcast 10 40 Non-Broadcast 30 120 Reference: http://www. distribute list 2 out D. distribute list 2 out FastEthernet0/0 Answer: D Explanation: Access list 2 is more specific.” www.0/24. distribute list 1 out B.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13693- 22.0.0.2.0/8 networks. so the correct command is “distribute list 2 out FastEthernet0/0. whereas access list 1 permits all 1.info 24 . Which command only announces the 1. This question also asks us to apply this distribute list only to the outbound direction of the fast Ethernet 0/0 interface.3. distribute list 1 out FastEthernet0/0 C.

0. where X is any value in the 0-255 range. 10.0. the ge 24 term means greater than or equal to a /24 and the le 24 means less than or equal to /24. Answer: D Explanation: show ipv6 traffic Field Descriptions Field Description source-routed Number of source-routed packets. OSPFv3 timers were adjusted for fast convergence. Cisco 300-101 Exam QUESTION NO: 27 Which prefix is matched by the command ip prefix-list name permit 10. The networks that are advertised from Router A do not show up in Router B's routing table.8. An IPv6 traffic filter is blocking the networks from being learned via the Router B interface that is connected to Router A. B. C.0. 10.CareerCert.8.8. the message "not a router" is found in the output.9. 10. This translates to any prefix in the 10.info 25 .0/16 ge 24 le 24? A.8.0.0. The networks were not advertised properly under the OSPFv3 process. QUESTION NO: 28 Router A and Router B are configured with IPv6 addressing and basic routing capabilities using oSPFv3.0.0/16 D. 10. so only a /24 is both greater than or equal to 24 and less than or equal to 24. D.0/24 C. IPv6 unicast routing is not enabled on Router A or Router B.8.0/24 network.1. After debugging IPv6 packets.8. Why is the routing information not being learned by Router B? A. truncated www.x.0/23 Answer: B Explanation: With prefix lists.0/24 B.24 matches this. Only the choice of 10.

E. The IPv6 universal/local flag (bit 7) was flipped. with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. you see that several IPv6 addresses have the 16-bit hexadecimal value of "fFFE" inserted into the address. Here is an example showing how the Mac Address is used to generate EUI. B. Based on this information. IEEE EUI-64 was implemented when assigning IPv6 addresses on the device.com/c/en/us/td/docs/ios/ipv6/command/reference/ipv6_book/ipv6_16. IEEE has chosen FFFE as a reserved value which can only appear in EUI-64 generated from the EUI-48 MAC address. The addresses were misconfigured and will not function as intended. C. The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. format errors Errors that can result from checks performed on header fields. Answer: A Explanation: Extended Unique Identifier (EUI).html QUESTION NO: 29 After you review the output of the command show ipv6 interface brief. www. The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. what do you conclude about these IPv6 addresses? A. The Mac address is first separated into two 24-bits.CareerCert. not a router Message sent when IPv6 unicast routing is not enabled.cisco.info 26 . as per RFC2373. Cisco 300-101 Exam Number of truncated packets. IPv6 addresses containing "FFFE" indicate that the address is reserved for multicast. but IPv6 Cisco Express Forwarding was disabled. the version number. IPv6 unicast forwarding was enabled. This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. and packet length. allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identify them EUI-64). D. Reference: http://www.

Reference: https://supportforums.CareerCert. If 0. Once the above is done.cisco. the globally unique addresses assigned by the IEEE have always been set to 0 whereas the locally created addresses have 1 configured.info 27 . it maintains its original scope (global unique address is still global unique and vice versa). needs to be inverted. This bit identifies whether this interface identifier is universally or locally administered.5.1. when the bit is inverted. the address is locally administered and if 1. we have a fully functional EUI-64 format address. the seventh bit from the left. The reason for inverting can be found in RFC4291 section 2. Therefore.com/document/100566/understanding-ipv6-eui-64-bit- address www. Cisco 300-101 Exam Next. It is worth noticing that in the OUI portion. or the universal/local (U/L) bit. the address is globally unique.

All local host traffic will be redirected to the router with the lowest ICMPv6 signature. What is the expected acknowledgment and its usage? A. the unicast address of the interface sending the router solicitation message is used as the source address in the message. the amount of time (in seconds) the router should be used as a default router) • www. Router solicitation messages. The destination address in router solicitation messages is the all-routers multicast address with a scope of the link.CareerCert. Cisco 300-101 Exam QUESTION NO: 30 A packet capture log indicates that several router solicitation messages were sent from a local host on the Ipv6 segment. RA messages typically include the following information: • One or more onlink Ipv6 prefixes that nodes on the local link can use to automatically configure their Ipv6 addresses • Lifetime information for each prefix included in the advertisement • Sets of flags that indicate the type of autoconfiguration (stateless or stateful) that can be completed • Default router information (whether the router sending the advertisement should be used as a default router and. where the DHCP server will allocate addresses to the local host. the destination address in the RA message is the unicast address of the source of the router solicitation message. which have a value of 133 in the Type field of the ICMP packet header. such as prefix discovery. such as the hop limit and MTU a host should use in packets that it . D. B. if so. Answer: B Explanation: Router Advertisements (RA) are sent in response to router solicitation messages. Duplicate Address Detection will determine if any other local host is using the same Ipv6 address for communication with the Ipv6 routers on the segment. If the host has a configured unicast address. Given that router solicitation messages are usually sent by hosts at system startup (the host does not have a configured unicast address). which is statically defined by the network administrator. Router acknowledgment messages will be forwarded upstream. When an RA is sent in response to a router solicitation. the source address in router solicitation messages is usually the unspecified Ipv6 address (0:0:0:0:0:0:0:0). C. are sent by hosts at system startup so that the host can immediately autoconfigure without needing to wait for the next scheduled RA message.info 28 Additional information for hosts. as well as certain data. Routers on the Ipv6 segment will respond with an advertisement that provides an external path from the local subnet.

• The routing protocol for each interface must be enabled under the routing process.168. Cisco 300-101 Exam Reference: http://www. However.com’s corporate implementation guidelines require: • The OSPF process ID for all routers must be 10.5/30 — Link between Seattle and Chicago Secret Password: cisco Chicago S0/0 192.cisco.54. ROUTE. they cannot ping from the serial interface of the Seattle router to the loopback interface of the NewYork router.9/30 — Link between Chicago and NewYork S0/1 192.6/30 — Link between Seattle and Chicago Secre Password: cisco NewYork S0/1 192.info 29 . OSPF has been configured on routers Chicago and NewYork. • The routing protocol must be enabled for each interface using the most specific wildcard mask possible. •The serial link between Seattle and Chicago must be in OSPF area 21. The loopback0 interface on NewYork is in Area 1.com is a small IT corporation that is attempting to implement the network shown in the exhibit.168.10/30 — Link between Chicago and NewYork www.168.CareerCert.16.16.html QUESTION NO: 31 CORRECT TEXT Route. The SO/0 interface on Chicago and the SO/1 interface on NewYork are in Area 0. You have been asked to complete the implementation to allow this ping.168. Network Information Seattle S0/0 192.54. •OSPF area 21 must not receive any inter-area or external routes. Currently the implementation is partially completed.com/c/en/us/td/docs/ios/ipv6/configuration/guide/12_4t/ipv6_12_4t_book/ip6- addrg_bsc_con.

Cisco 300-101 Exam Loopback0 172.CareerCert.info 30 .16.189.189 Secret Password: cisco www.

info 31 .5/30. and router hostnames may change.5/30 in order to configure the OSPF. So. we need to find the network address and wildcard mask of 192.16. Seattle’s S0/0 IP Address is 192. but the overall solution is the same.16.CareerCert.168. the IP addressing. www.168. OSPF areas and process ID. Cisco 300-101 Exam Answer: Here is the solution below: Explanation: Note: In actual exam.

CareerCert. find the 4th octet of the Network Address: The 4th octet of IP address (192. 256-252 = 4.16. Subnet Mask: (Network Bits – 1’s.info 32 . hence the subnets will increment by 4.16.16. Host Bits – 0’s) Let’s find the wildcard mask of /30: Now we configure OSPF using process ID 10 (note the process ID may change to something else www.168.168.5) belongs to subnet 1 (4 to 7).5 /30 Subnet Mask: 255. First.168.168. Network Address: 192.255.255. Cisco 300-101 Exam IP Address: 192.252 Here subtract 252 from 2565.16.7 Let’s find the wildcard mask of /30.4 Broadcast Address: 192.

CareerCert.0.4 0.3 area 21 One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route). And if we don’t want to send inter-area routes. Seattle(config-router)#area 21 stub Seattle(config-router)#end Seattle#copy run start Chicago Configuration: Chicago>enable Password: cisco Chicago#conf t Chicago(config)#router ospf 10 We need to add Chicago’s S0/1 interface to Area 21 Chicago(config-router)#network 192. In order to accomplish this. we have to stop LSA Type 3 and Type 4. Chicago(config-router)#area 21 stub no-summary Chicago(config-router)#end Chicago#copy run start The other interface on the Chicago router is already configured correctly in this scenario. area 21 should not receive any external or inter-area routes (except the default route).0.16. Cisco 300-101 Exam in real exam).0. we must stop LSA Type 5 if we don’t want to send external routes.3 area 21 Again.168.4 0.info 33 . www. as well as the New York router so there is nothing that needs to be done on that router. Therefore we want to configure area 21 as a totally stubby area.16.0.168. Seattle>enable Password: Seattle#conf t Seattle(config)#router ospf 10 Seattle(config-router)#network 192.

Another network professional was tasked with implementing this solution. The remote office router (R3) was previously configured and all corporate subnets were reachable from R3. in the process of configuring EIGRP stub routing connectivity with the remote network devices off of R3 has been lost.CareerCert. JS Industries is interested in using route summarization along with the EIGRP Stub Routing feature to increase network stability while reducing the memory usage and bandwidth utilization to R3. Your task is to identify and resolve the cause of connectivity failure with the remote office router R3. R3. Cisco 300-101 Exam QUESTION NO: 32 CORRECT TEXT JS Industries has expanded their business with the addition of their first remote office.0.info 34 .0 subnets. However. and R4 in the network. You have corrected the fault when pings from R2 to the R3 LAN interface are successful. and the R3 IP routing table only contains 2 10.0. Currently EIGRP is configured on all routers R2. www. Once the issue has been resolved you should complete the task by configuring route summarization only to the remote office router R3.

Cisco 300-101 Exam www.info 35 .CareerCert.

Notice that R3 is configured as a stub receive-only router. Use the show running-config command on router R3. This keyword will also prevent any type of route from being sent.CareerCert. Cisco 300-101 Exam Answer: Here are the solutions as below: Explanation: First we have to figure out why R3 and R4 can not communicate with each other.info 36 . The receive-only keyword will restrict the router from sharing any of its routes with any other router in that EIGRP autonomous system. Therefore we will remove this command and replace it with the eigrp stub command: R3# configure terminal R3(config)# router eigrp 123 R3(config-router)# no eigrp stub receive-only www.

0.2. Next we will configure router R3 so that it has only 2 subnets of 10.0 network.0/24.2.255.0.0. to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet.0 at the interface s0/0 of R4 to summary. There is one interesting thing about the output of the show ip route shown above: the 10.0.0 255.0 255. Therefore. which is a directly connected network of R3. R4> enable R4# conf t R4(config)# interface s0/0 R4(config-if)# ip summary-address eigrp 123 10. Use the show ip route command on R3 to view its routing table: Because we want the routing table of R3 only have 2 subnets so we have to summary sub- networks at the interface which is connected with R3.0 so that all the ping can work well.0 www.0 255.2.3.CareerCert.0.255.0.2. Cisco 300-101 Exam R3(config-router)# eigrp stub R3(config-router)# end Now R3 will send updates containing its connected and summary routes to other routers. In conclusion.0.info 37 . In the output if we don’t see the summary line (like 10.0.255. the s0/0 interface of R4. we will use the ip summary-address eigrp 123 10.0. Notice that the eigrp stub command equals to the eigrp stub connected summary because the connected and summary options are enabled by default.0. We can’t get rid of it in the routing table no matter what technique we use to summary the networks.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.

notice that if you use another network than 10.255.0/8 is a summary.0.0.CareerCert. for example. This summarization is better because all the pings can work well. the output is shown below: Note: Please notice that the IP addresses and the subnet masks in your real exam might be different so you might use different ones to solve this question.2. Just for your information.0/8 to summary.0. R3(config-if)# end www.0. Null0” then you can summarize using the network 10.0.info 38 . Finally don’t forget to use the copy run start command on routers R3 and R4 to save the configurations.2. Cisco 300-101 Exam Now we jump back to R3 and use the show ip route command to verify the effect.0.0 you will leave a /16 network in the output of the show ip route command. if you use the command ip summary-address eigrp 123 10.0 255.0.0/16. if you don’t see the line “10. But in your real exam.

You are tasked with identifying the cause of this fault and implementing the needed corrective actions that uses OPSF features and does not change the current area assignments. You will know that you have corrected the fault when R4’s loopback address (FEC0:4:4) can be seen in RTs Ipv6 routing table.” QUESTION NO: 33 CORRECT TEXT ROUTE. Currently OSPF is configured on all routers.CareerCert. Cisco 300-101 Exam R3# copy run start R4(config-if)# end R4# copy run start If the “copy run start” command doesn’t work then use “write memory.info 39 . www.com is a small IT corporation that has an existing enterprise network that is running Ipv6 0SPFv3. Special Note: To gain the maximum number of points you must remove all incorrect or unneeded configuration statements related to this issue. However. R4’s loopback address (FEC0:4:4) cannot be seen in R1’s Ipv6 routing table.

Cisco 300-101 Exam www.CareerCert.info 40 .

Cisco 300-101 Exam Answer: Here is the solution below: Explanation: To troubleshoot the problem. first issue the show running-config on all of 4 routers. Pay more attention to the outputs of routers R2 and R3 The output of the “show running-config” command of R2: www.CareerCert.info 41 .

not R2’s router-id 2.2. we can use a virtual link to connect to the backbone through a non-backbone area. The area through which you configure the virtual link is known as a transit area.3.info 42 . the area 11 will become the transit area.3. routers R2 and R3 must be configured with the area <area id> virtual- link <neighbor router-id>command.3. we learned that the OSPF process ID of R2 is 1): R2>enable R2#configure terminal R2(config)#ipv6 router ospf 1 R2(config-rtr)#area 11 virtual-link 3.2. In this case. Therefore.4. we learned that the OSPF process ID of R3 is 1 and we have to disable the wrong configuration of “area 54 virtual-link 4.4.2) + Configure virtual link on R3 (from the second output above.4”): R3>enable www. where this is not possible. In some cases. + Configure virtual link on R2 (from the first output above.3.CareerCert. Cisco 300-101 Exam The output of the “show running-config” command of R3: We knew that all areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0).3.3 Save the configuration: R2(config-rtr)#end R2#copy running-config startup-config (Notice that we have to use neighbor router-id 3.

ROUTE.4.2 Save the configuration: R3(config-rtr)#end R3#copy running-config startup-config You should check the configuration of R4. Make sure to remove the incorrect configuration statements to get the full points.com has two connections to the Internet. All other traffic may use either link.info 43 .4 R3(config-rtr)#area 11 virtual-link 2. Note. use the show ipv6 route command. If you want to check the routing information. QUESTION NO: 34 CORRECT TEXT You are a network engineer with ROUTE. www. not “show ip route”. You may use the Test Workstation to generate HTTP traffic to validate your solution.4. Cisco 300-101 Exam R3#configure terminal R3(config)#ipv6 router ospf 1 R3(config-rtr)#no area 54 virtual-link 4. No static or default routing is allowed.CareerCert. R4(config)#ipv6 router ospf 1 R4(config-router)#no area 54 virtual-link 3. too.2.3.3. one via a frame relay link and one via an EoMPLS link. IT policy requires that all outbound HTTP traffic use the frame relay link when it is available. a small IT company.com.2. Choose and configure the appropriate path selection feature to accomplish this task.3 R4(config-router)#end After finishing the configuration doesn’t forget to ping between R1 and R4 to make sure they work.

1. Cisco 300-101 Exam Answer: We need to configure policy based routing to send specific traffic along a path that is different from the best path in the routing table. After that configure the route map and then apply it on the interface to the server in EIGRP network.CareerCert.100.2 R1(config-route-map)#exit R1(config)#route-map pbr permit 20 3) Apply the route-map on the interface to the server in the EIGRP Network: R1(config-route-map)#exit R1(config)#int fa0/1 R1(config-if)#ip policy route-map pbr R1(config-if)#exit R1(config)#exit Explanation: First you need to configure access list to HTTP traffic and then configure that access list.info 44 . Here are the step by Step Solution for this: First create the access list that catches the HTTP traffic: R1(config)#access-list 101 permit tcp any any eq www 2) Configure the route map that sets the next hop address to be ISP1 and permits the rest of the traffic: R1(config)#route-map pbr permit 10 R1(config-route-map)#match ip address 101 R1(config-route-map)#set ip next-hop 10. www.

Cisco 300-101 Exam
QUESTION NO: 35 CORRECT TEXT

You are a network engineer with ROUTE.com, a small IT company. They have recently merged
two organizations and now need to merge their networks as shown in the topology exhibit. One
network is using OSPF as its IGP and the other is using EIGRP as its IGP. R4 has been added to
the existing OSPF network to provide the interconnect between the OSPF and EIGRP networks.
Two links have been added that will provide redundancy.

The network requirements state that you must be able to ping and telnet from loopback 101 on R1
to the OPSF domain test address of 172.16.1.100. All traffic must use the shortest path that
provides the greatest bandwidth. The redundant paths from the OSPF network to the EIGRP
network must be available in case of a link failure. No static or default routing is allowed in either
network.

A previous network engineer has started the merger implementation and has successfully
assigned and verified all IP addressing and basic IGP routing. You have been tasked with
completing the implementation and ensuring that the network requirements are met. You may not
remove or change any of the configuration commands currently on any of the routers. You may
add new commands or change default values.

Answer: First we need to find out 5 parameters (Bandwidth, Delay, Reliability, Load, MTU) of the
s0/0/0 interface (the interface of R2 connected to R4) for redistribution:
R2#show interface s0/0/0
Write down these 5 parameters, notice that we have to divide the Delay by 10 because the metric
unit is in tens of microsecond. For example, we get Bandwidth=1544 Kbit, Delay=20000 us,
Reliability=255, Load=1, MTU=1500 bytes then we would redistribute as follows:
R2#config terminal
R2(config)# router ospf 1

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Cisco 300-101 Exam
R2(config-router)# redistribute eigrp 100 metric-type 1 subnets
R2(config-router)#exit
R2(config-router)#router eigrp 100
R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500
Note: In fact, these parameters are just used for reference and we can use other parameters with
no problem.
If the delay is 20000us then we need to divide it by 10, that is 20000 / 10 = 2000)
For R3 we use the show interface fa0/0 to get 5 parameters too
R3#show interface fa0/0
For example we get Bandwidth=10000 Kbit, Delay=1000 us, Reliability=255, Load=1, MTU=1500
bytes
R3#config terminal
R3(config)#router ospf 1
R3(config-router)#redistribute eigrp 100 metric-type 1 subnets
R3(config)#exit
R3(config-router)#router eigrp 100
R3(config-router)#redistribute ospf 1 metric 10000 100 255 1 1500
Finally you should try to “show ip route” to see the 172.16.100.1 network (the network behind R4)
in the routing table of R1 and make a ping from R1 to this network.
Note: If the link between R2 and R3 is FastEthernet link, we must put the command below under
EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4), which is better
than R1 -> R2 -> R4.
R2(config-router)# distance eigrp 90 105
This command sets the Administrative Distance of all EIGRP internal routes to 90 and all EIGRP
external routes to 105, which is smaller than the Administrative Distance of OSPF (110) -> the link
between R2 & R3 will be preferred to the serial link between R2 & R4.
Note: The actual OPSF and EIGRP process numbers may change in the actual exam so be sure
to use the actual correct values, but the overall solution is the same.

QUESTION NO: 36

You have been asked to evaluate how EIGRP is functioning in a customer network. Access the
device consoles to answer the questions.

www.CareerCert.info 46

Cisco 300-101 Exam

www.CareerCert.info 47

Cisco 300-101 Exam www.CareerCert.info 48 .

CareerCert.info 49 .Cisco 300-101 Exam www.

1:5 C. find the IP address of the loopback0 interface on R6: www. What is the ratio of traffic over each path? A. 1:1 B.info 50 . Cisco 300-101 Exam Traffic from R1 to R6’s Loopback address is load shared between R1-R2-R4-R6 and R1-R3-R5- R6 paths.CareerCert. 19:80 Answer: D Explanation: First. 6:8 D.

1.6.6” command from R1 and see this: www.info 51 .6.1.6. so we issue the “show ip route 150. Cisco 300-101 Exam We see that it is 150.CareerCert.

www. Access the device consoles to answer the questions. QUESTION NO: 37 You have been asked to evaluate how EIGRP is functioning in a customer network. and 80 for the second path.info 52 . Cisco 300-101 Exam Notice the “traffic share count” shows 19 for the first path.CareerCert.

info 53 .CareerCert.Cisco 300-101 Exam www.

CareerCert.info 54 .Cisco 300-101 Exam www.

An ACL using a distance of 255 www.CareerCert. Distribute-list using a prefix-list C. Distribute-list using an ACL B.info 55 . Distribute-list using a route-map D. Cisco 300-101 Exam What type of route filtering is occurring on R6? A.

CareerCert. www. Access the device consoles to answer the questions. QUESTION NO: 38 You have been asked to evaluate how EIGRP is functioning in a customer network.info 56 . Cisco 300-101 Exam Answer: A Explanation: The configuration on R6 is as follows: This is a standard distribute list using access list number 1.

Cisco 300-101 Exam www.info 57 .CareerCert.

CareerCert.Cisco 300-101 Exam www.info 58 .

Cisco 300-101 Exam www.CareerCert.info 59 .

CareerCert. Cisco 300-101 Exam Which key chain is being used for authentication of EIGRP adjacency between R4 and R2? A. MD5 Answer: A Explanation: R4 and R2 configs are as shown below: www. KEY D. EIGRP C.info 60 . CISCO B.

QUESTION NO: 39 You have been asked to evaluate how EIGRP is functioning in a customer network. Cisco 300-101 Exam Clearly we see the actual key chain is named CISCO. Access the device consoles to answer the questions. www.CareerCert.info 61 .

Cisco 300-101 Exam www.CareerCert.info 62 .

CareerCert.Cisco 300-101 Exam www.info 63 .

CareerCert.info 64 .Cisco 300-101 Exam www.

333056 B.0 network on R1? A.46. 1810944 D. 307456 Answer: C Explanation: R1’s routing table is as follows www. Cisco 300-101 Exam What is the advertised distance for the 192.CareerCert.info 65 . 1938688 C.168.

Access the device consoles to answer the questions.info 66 .CareerCert.0 route. www. QUESTION NO: 40 You have been asked to evaluate how EIGRP is functioning in a customer network.168. Cisco 300-101 Exam The numbers after the route specify the administrative distance of the route (90 for EIGRP) and the distance metric of that particular route.46. which is shown as 1810944 for the 192.

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info 69 .Cisco 300-101 Exam www.CareerCert.

40 Answer: B Explanation: The relevant configuration of R1 is shown below: www. 30 D.info 70 . 10 B.CareerCert. 20 C. Cisco 300-101 Exam What percent of R1’s interfaces bandwidth is EIGRP allowed to use? A.

info 71 . Cisco 300-101 Exam ip bandwidth-percent eigrp 1 20 1 = the EIGRP AS 20 = 20% of the bandwidth QUESTION NO: 41 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a www.CareerCert.

The customer has disabled your access to the show running- config command.CareerCert. www. Cisco 300-101 Exam customer has about its operation.info 72 .

info 73 .CareerCert.Cisco 300-101 Exam www.

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info 75 . Cisco 300-101 Exam How old is the Type 4 LSA from Router 3 for area 1 on the router R5 based on the output you have examined? A. 600 D. 1601 C.CareerCert. 1569 Answer: A Explanation: Part of the “show ip ospf topology” command on R5 shows this: www. 1858 B.

The customer has disabled your access to the show running- config command.3) shows the age is 1858.3.3. QUESTION NO: 42 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. www.CareerCert.info 76 . Cisco 300-101 Exam The Link ID of R3 (3.

Cisco 300-101 Exam www.info 77 .CareerCert.

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120 C. R3 is responsible for flooding LSUs to all the routers on the network. Cisco 300-101 Exam Which of the following statements is true about the serial links that terminate in R3? A. www.info 79 . The R2-R3 link OSPF timer values are 30.40 D.40.CareerCert. The R1-R3 link OSPF timer values should be 10. The R1-R3 link needs the neighbor command for the adjacency to stay up B. 120.

info 80 .CareerCert. The customer has disabled your access to the show running- config command. www. Cisco 300-101 Exam Answer: B Explanation: We can see the configured timers using the following command: QUESTION NO: 43 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation.

info 81 .CareerCert.Cisco 300-101 Exam www.

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54 F. Cisco 300-101 Exam How many times was SPF algorithm executed on R4 for Area 1? A.CareerCert. 9 D. 224 Answer: C Explanation: This can be found using the “show ip ospf” command on R4. 20 E. 5 C.info 84 . Look for the Area 1 stats which shows this: www. 1 B.

info 85 . Cisco 300-101 Exam QUESTION NO: 44 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. The customer has disabled your access to the show running- config command.CareerCert. www.

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info 87 .Cisco 300-101 Exam www.CareerCert.

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R5's Loopback and R6's Loopback are both present in R5's Routing table B.CareerCert.info 89 . Only R6's loopback is present in R5's Routing table E. Only R5's loopback is present in R6's Routing table Answer: A Explanation: Explanation: Here are the routing tables of R5 and R6: www. Only R5's loopback is present in R5's Routing table D. R5's Loopback and R6's Loopback are both present in R6's Routing table C. Cisco 300-101 Exam Areas of Router 5 and 6 are not normal areas. Inspect their routing tables and determine which statement is true? A.

6. and the 6. www.CareerCert. Cisco 300-101 Exam Here we see R5’s loopbacks in the routing table shown as connected.6 loopback IP address of R6 is also seen as an OSPF route in R5’s routing table.info 90 .6.

interface fa 0/0 bandwidth 1536 ip address 209.201.165.255. Besides allowing for multiple destinations. Conversely. tunnel interfaces by default are point-to- www.224 tunnel source Serial0/0 tunnel mode gre multipoint B.200. a p2p GRE tunnel may connect to an mGRE tunnel.CareerCert. This means that an mGRE tunnel on the hub may connect to a p2p tunnel on the branch.224 tunnel source 192.224 tunnel source 209.224 tunnel mode gre multipoint C. VPN Technologies QUESTION NO: 45 A company has just opened two remote branch offices that need to be connected to the corporate network.231 255.165. The distinguishing feature between an mGRE interface and a p2p GRE interface is the tunnel destination.1 tunnel-mode dynamic D. Note. This command is used instead of the tunnel destination x.201.255. interface Tunnel0 bandwidth 1536 ip address 209.2 tunnel destination 209.168.230 255.230 255.x found with p2p GRE tunnels.x. An mGRE interface does not have a configured destination.info 91 .200.1 tunnel-mode dynamic Answer: A Explanation: The configuration of mGRE allows a tunnel to have multiple destinations. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites? A.255.255.165. The configuration of mGRE on one side of a tunnel does not have any relation to the tunnel properties that might exist at the exit points.255.255.200.165.165. Instead the GRE tunnel is configured with the command tunnel mode gre multipoint.165. interface fa0/0 bandwidth 1536 ip address 209. an mGRE tunnel requires NHRP to resolve the tunnel endpoints. Cisco 300-101 Exam Topic 4.231 255.161.x.255.200.255. interface Tunnel0 bandwidth 1536 ip address 209.

1. which is not seen in the configuration because it is the default.255.1. remaining key lifetime C.1.1. invalid identity packets Answer: A. untagged packets F. Cisco 300-101 Exam point (p-p) using GRE encapsulation.0/255.1. Authentication Header (AH) is not used since there are no AH SAs.1.2 for traffic that goes between networks 20.1. effectively they have the tunnel mode gre command.0 tunnel source Serial0/0 tunnel mode gre multipoint Reference: http://www.0/0/0) remote ident (addr/mask/prot/port): (10.255. The encrypted tunnel is built between 12.1.C Explanation: show crypto ipsec sa This command shows IPsec SAs built between peers.255.0 and 10.html QUESTION NO: 46 A network engineer executes the show crypto ipsec sa command.62.) A.1.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/DMVPDG/DMVPN_2_ Phase2.info 92 .CareerCert.0.10 255.1.2 www. inbound crypto map B.1. local addr.1 and 12. path MTU D.1.cisco. interface: FastEthernet0 Crypto map tag: test.1. 12.1 local ident (addr/mask/prot/port): (20.255. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound.1. This output shows an example of the show crypto ipsec sa command (bolded ones found in answers for this question).255.1.0/255.B. tagged packets E.1. The mGRE configuration is as follows: ! interface Tunnel0 bandwidth 1536 ip address 10.1. Which three pieces of information are displayed in the output? (Choose three.0/0/0) current_peer: 12.255.

} slot: 0. #pkts digest 7767918 #pkts decaps: 7760382. conn id: 3443. Cisco 300-101 Exam PERMIT.1.1.info 93 .} #pkts encaps: 7767918.html QUESTION NO: 47 Refer to the following output: Router#show ip nhrp detail www.: 12. #pkts encrypt: 7767918. #send errors 1. #Recv errors 0 local crypto endpt. } slot: 0. in use settings ={Tunnel.cisco. conn id: 3442. flow_id: 1444. crypto map: test sa timing: remaining key lifetime (k/sec): (4608000/52) IV size: 8 bytes replay detection support: Y outbound ah sas: outbound pcp sas: Reference: http://www. media mtu 1500 current outbound spi: 3D3 inbound esp sas: spi: 0x136A010F(325714191) transform: esp-3des esp-md5-hmac . flow_id: 1443. flags={origin_is_acl. in use settings ={Tunnel. #pkts verify 7760382 #pkts compressed: 0. #pkts decompressed: 0 #pkts not compressed: 0.1. failed: 0.2 path mtu 1500. #pkts compr.CareerCert.: 12.1. crypto map: test sa timing: remaining key lifetime (k/sec): (4608000/52) IV size: 8 bytes replay detection support: Y inbound ah sas: inbound pcp sas: inbound pcp sas: outbound esp sas: spi: 0x3D3(979) transform: esp-3des esp-md5-hmac . remote crypto endpt. #pkts decompress failed: 0.1. #pkts decrypt: 7760382.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike- protocols/5409-ipsec-debug-00.

2.255.1111. Cisco 300-101 Exam 10.255.1.11 10.1111.2/8 via 10.0. Data packets are process switches for this mapping entry. • The interface type and number and how long ago it was created (hours:minutes:seconds).1 255.2 The fields in the sample display are as follows: • The IP address and its network mask in the IP-to-NBMA address cache.2 What does the authoritative flag mean in regards to the NHRP information? A. It was obtained directly from the next-hop server.1. Tunnel1 created 00:00:12.0.0.1.1. This value is based on the ip nhrp holdtime command.1111.255. • The time in which the positive and negative authoritative NBMA address will expire (hours:minutes:seconds). E. expire 01:59:47 TypE.1111. D.info 94 .1111. Answer: A Explanation: Show NHRP: Examples The following is sample output from the show ip nhrp command: Router# show ip nhrp 10.2.1111. NHRP mapping is for networks that are local to this router.1111. The mapping entry was created in response to an NHRP registration request.CareerCert.255. The mask is always 255. The NHRP mapping entry cannot be overwritten. B. C. Dynamic. tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative NBMA address: 10. – www.2 255.255.255.1.1.1111.12. Tunnel0 created 0:10:03 expire 1:49:56 Type: static Flags: authoritative NBMA address: 10.255.0.255 because Cisco does not support aggregation of NBMA information through NHRP. • Type of interface: – dynamic—NBMA address was obtained from the NHRP Request packet.1111. Flags: authoritative unique nat registered used NBMA address: 10.255.

html QUESTION NO: 48 Which common issue causes intermittent DMVPN tunnel flaps? A. Reference: http://www. Solution When DMVPN tunnels flap.html#Prblm1 QUESTION NO: 49 Which encapsulation supports an interface that is configured for an EVN trunk? A.cisco.info 95 . check the neighborship between the routers as issues with neighborship formation between routers may cause the DMVPN tunnel to flap.1Q B. a suboptimal routing table C. interface bandwidth congestion D. Frame Relay www. Cisco 300-101 Exam authoritative—Indicates that the NHRP information was obtained from the Next Hop Server or router that maintains the NBMA-to-IP address mapping for a particular destination. ISL C. make sure the neighborship between the routers is always up. PPP D.cisco. a routing neighbor reachability issue B.CareerCert. 802. that the GRE tunnel to hub router is not encrypted Answer: A Explanation: DMVPN Tunnel Flaps Intermittently Problem DMVPN tunnel flaps intermittently. Reference: http://www.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike- protocols/29240-dcmvpn. In order to resolve this problem.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.

In other words. NetFlow configuration Answer: A. To simplify the configuration process. access control lists E. and port channels. This is accomplished as a result of each EVN having a unique routing and forwarding table. Gigabit Ethernet. Reference: http://www.pdf www.cisco. such as Fast Ethernet. • A single IP infrastructure can be virtualized to provide up to 32 virtual networks end-to-end. HDLC Answer: A Explanation: Restrictions for EVN • An EVN trunk is allowed on any interface that supports 802. Cisco 300-101 Exam E.cisco.) A. thereby enabling support for overlapping IP addresses across multiple EVNs. routing table C. you cannot configure VRF-Lite on the same interface.com/c/en/us/td/docs/ios-xml/ios/evn/configuration/xe-3s/evn-xe-3s- book/evn-overview. • OSPFv3 is not supported.1q encapsulation. Reference: http://www. MPLS F. all the subinterfaces and associated EVNs have the same IP address assigned.com/en/US/docs/ios-xml/ios/evn/configuration/xe-3sg/evn- overview.info 96 .C Explanation: runk interface can carry traffic for multiple EVNs. OSPFv2 is supported. the trunk interface is identified by the same IP address in different EVN contexts.CareerCert. • If an EVN trunk is configured on an interface.pdf QUESTION NO: 50 Which three characteristics are shared by subinterfaces and associated EVNs? (Choose three. forwarding table D. IP address B.B.

info 97 . and the security appliance identifies the user as requiring the client. Unless the security appliance is configured to redirect http:// requests to https://. Which type of remote access did the engineer enable? A. and follow the instructions. If the user satisfies the login and authentication. Cisco Easy VPN www. SSL VPN client access Answer: D Explanation: The Cisco AnyConnect VPN Client provides secure SSL connections to the security appliance for remote users.cisco. Cisco 300-101 Exam QUESTION NO: 51 A user is having issues accessing file shares on a network.html QUESTION NO: 52 Which Cisco IOS VPN technology leverages Ipsec. GETVPN D. After downloading. establishes a secure SSL connection and either remains or uninstalls itself (depending on the security appliance configuration) when the connection terminates. the client installs and configures itself. dynamic routing protocol. The network engineer advises the user to open a web browser. remote users enter the IP address in their browser of an interface configured to accept SSL VPN connections. and Cisco Express Forwarding? A. the user is able to access company shares. it downloads the client that matches the operating system of the remote computer. VPDN client access D.CareerCert. input a prescribed IP address. After doing this. DMVPN C.com/c/en/us/support/docs/security/asa-5500-x-series-next- generation-firewalls/100936-asa8x-split-tunnel-anyconnect-config. FlexVPN B. Ipsec VPN client access C. NHRP. EZVPN B. users must enter the URL in the form https://<address>. Without a previously installed client. the browser connects to that interface and displays the login screen. Reference: http://www. mGRE. After entering the URL.

info 98 . tunnels between spokes can be dynamically built on demand (dynamic-mesh) without additional configuration on the hubs or spokes. NHRP and Ipsec. DMVPN is combination of the following technologies: Reference: http://en. Cisco 300-101 Exam Answer: B Explanation: Dynamic Multipoint Virtual Private Network (DMVPN) is a dynamic tunneling form of a virtual private network (VPN) supported on Cisco IOS-based routers and Unix-like Operating Systems based on the standard protocols. no change in the configuration on the hub is required to accept new spokes.CareerCert. including Ipsec (Internet Protocol Security) and ISAKMP (Internet Security Association and Key Management Protocol) peers. only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D. all traffic to vty 0 4 from source all Answer: C Explanation: www. DMVPN is initially configured to build out a hub-and-spoke network by statically configuring the hubs (VPN headends) on the spokes. This DMVPN provides the capability for creating a dynamic-mesh VPN network without having to pre-configure (static) all possible tunnel end-point peers. GRE. only ssh traffic to vty 0 4 from source all C. This dynamic-mesh capability alleviates the need for any load on the hub to route data between the spoke networks. all traffic to vty 0 4 from source 2001:DB8:0:4::32 B. Using this initial hub- and-spoke network.wikipedia.org/wiki/Dynamic_Multipoint_Virtual_Private_Network Topic 5. Infrastructure Security QUESTION NO: 53 Which traffic does the following configuration allow? Ipv6 access-list cisco permit ipv6 host 2001:DB8:0:4::32 any eq ssh line vty 0 4 ipv6 access-class cisco in A.

Always use with the access-list command to apply an extended ACL to the debug output. www. You can disable the IP route cache globally. Answer: C Explanation: The “debug ip packet” command generates a substantial amount of output and uses a substantial amount of system resources.cisco. which allows only the single Ipv6 IP address of 2001:DB8:0:4::32 to connect using SSH only. E. You can use an extended access list. B. You can use the KRON scheduler. Cisco 300-101 Exam Here we see that the Ipv6 access list called “cisco” is being applied to incoming VTY connections to the router. the network engineer notices that the router CPU utilization has risen to 99 percent.CareerCert. Access-list 100 permit ip any any log After applying the access list on a Cisco router. What is the reason for this? A.info 99 . C. Ipv6 access list has just one entry. You can use an IOS parser. A packet that matches access-list with the "log" keyword is fast switched. You can use the RITE traffic exporter. D. A packet that matches access-list with the “log” keyword is Cisco Express Forwarding switched. which method can you use in combination with the “debug ip packet” command to limit the amount of output data? A. This command should be used with caution in production networks. B. Reference: http://www.html QUESTION NO: 55 Refer to the following access list.com/c/en/us/support/docs/security/dynamic-multipoint-vpn- dmvpn/111976-dmvpn-troubleshoot-00. QUESTION NO: 54 For troubleshooting purposes.

a number of common types of denial-of-service (DoS) attacks.com/web/about/security/intelligence/acl-logging. Reference: http://www. default gateway Answer: A Explanation: The Unicast RPF feature helps to mitigate problems that are caused by the introduction of malformed or forged (spoofed) IP source addresses into a network by discarding IP packets that lack a verifiable IP source address. including Smurf and Tribal Flood Network (TFN).info 100 .html www. For Internet service providers (ISPs) that provide public access. Unfortunately. D. its customer. A packet that matches access-list with the "log" keyword is process switched.com/en/US/docs/ios/12_2/security/configuration/guide/scfrpf.cisco. destination address C. and the rest of the Internet. ACL logging can be CPU intensive and can negatively affect other functions of the network device. Answer: C Explanation: ging-enabled access control lists (ACLs) provide insight into traffic as it traverses the network or is dropped by network devices. For example. router interface D. can take advantage of forged or rapidly changing source IP addresses to allow attackers to thwart efforts to locate or filter the attacks. source address B.html#4 QUESTION NO: 56 Which address is used by the Unicast Reverse Path Forwarding protocol to validate a packet against the routing table? A. Cisco 300-101 Exam C. Unicast RPF deflects such attacks by forwarding only packets that have source addresses that are valid and consistent with the IP routing table.CareerCert. There are two primary factors that contribute to the CPU load increase from ACL logging: process switching of packets that match log-enabled access control entries (ACEs) and the generation and transmission of log messages. This action protects the network of the ISP. A large amount of IP traffic is being permitted on the router.cisco. Reference: http://www.

the source address must appear in the routing table. loose mode. or VRF mode.html www. This security feature works by enabling a router to verify the reachability of the source address in packets being forwarded. the packet is discarded. This capability can limit the appearance of spoofed addresses on a network.CareerCert. If the source IP address is not valid. strict mode. loose mode. Dropping this legitimate traffic could occur when asymmetric routing paths are present in the network. When administrators use Unicast RPF in loose mode. broadcast mode. strict mode. Additionally.com/web/about/security/intelligence/unicast-rpf. Care must be taken to ensure that the appropriate Unicast RPF mode (loose or strict) is configured during the deployment of this feature because it can drop legitimate traffic. An access list may also be specified that permits or denies certain source addresses in Unicast RPF loose mode. Reference: http://www. a packet that contains a source address for which the return route points to the Null 0 interface will be dropped. and VRF mode B. Although asymmetric traffic flows may be of concern when deploying this feature. strict mode. Unicast RPF configured in strict mode may drop legitimate traffic that is received on an interface that was not the router's choice for sending return traffic. the packet must be received on the interface that the router would use to forward the return packet. which allows the use of the default route in the source verification process. When administrators use Unicast RPF in strict mode. loose mode. Administrators can change this behavior using the allow-default option.info 101 . and VRF mode D.cisco. broadcast mode. and VRF mode Answer: A Explanation: Network administrators can use Unicast Reverse Path Forwarding (Unicast RPF) to help limit the malicious traffic on an enterprise network. Unicast RPF works in one of three different modes: strict mode. loose mode. Note that not all network devices support all three modes of operation. and broadcast mode C. Cisco 300-101 Exam QUESTION NO: 57 What are the three modes of Unicast Reverse Path Forwarding? A. Unicast RPF in VRF mode will not be covered in this document. Unicast RPF loose mode is a scalable option for networks that contain asymmetric routing paths.

This ACL is used to prevent all packets with a spoofed reserved private source IP address to enter the network.0. which is applied on the external interface FastEthernet 1/0 of the perimeter router.255.168.0.0.168.0. The log keyword also enables logging of this intrusion attempt.255.255.0.0.168.255 any log router (config)#access-list 101 deny ip 172.0.255.0. Cisco 300-101 Exam QUESTION NO: 58 What does the following access list.255 any log router (config)#access-list 101 permit ip any any router (config)#interface fastEthernet 1/0 router (config-if)#ip access-group 101 in A.0.0- 172.255 172. It prevents incoming traffic from IP address ranges 10.0 0.31.16.255 any log router (config)#access-list 101 deny ip 192.0-192.255.255. C.255. Answer: C Explanation: The private IP address ranges defined in RFC 1918 are as follows: 10.0 — 192.255.0. accomplish? Router(config)#access-list 101 deny ip 10.255.0 — 172.0-10.0.0 0.0.255 192. B.16.0 — 10. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts. 192.255 and logs any intrusion attempts. D.168.15.255 These IP addresses should never be allowed from external networks into a corporate network as they would only be able to reach the network from the outside via routing problems or if the IP addresses were spoofed.0.255. 172. It prevents private internal addresses to be accessed directly from outside.16.31. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet.255. QUESTION NO: 59 Refer to the following command: www.0.0 0.0.168.CareerCert.info 102 .255.

use the ip http secure-port command in global configuration mode.20.cisco.14. The default is 443.20. Reference: http://www.info 103 . Answer: A Explanation: To set the secure HTTP (HTTPS) server port number for listening. but the port number must be higher than 1024 unless the default is used. 53. Ip http secure-port port-number no ip http secure-port Syntax Description port-number Integer in the range of 0 to 65535 is accepted. router(config-if)#udp helper-address 172. The router will listen to HTTP and HTTP traffic on port 4433. B. To return the HTTPS server port number to the default.14.14.html#wp3612805529 QUESTION NO: 60 A network engineer is configuring a routed interface to forward broadcasts of UDP 69. C. The router will listen on port 4433 for HTTP traffic.com/en/US/docs/ios-xml/ios/https/command/nm-https-cr-cl- sh. Which command should be applied to the configuration to allow this? A.225. use the no form of this command.20.14. The www. The router will never accept any HTTP and HTTPS traffic. router(config-if)#ip udp helper-address 172. The router will listen on port 4433 for HTTPS traffic.20.225 C.14.225 B.20. Cisco 300-101 Exam router(config)# ip http secure-port 4433 Which statement is true? A. D. router(config-if)#ip helper-address 172.225 D.225 69 53 49 Answer: A Explanation: To let a router forward broadcast packet the command ip helper-address can be used.CareerCert. router(config-if)#ip helper-address 172. and 49 to 172.

com/163/forward_udp_broadcas.16.28 traps version 2c CISCORO B.28 traps version 3 auth CISCORO D.cisco-faq. router(config)#snmp-server host 172. the following broadcast packets will be forwarded by the router by default: • TFTP — UDP port 69 • Domain Name System (DNS) – UDP port 53 • Time service — port 37 • NetBIOS Name Server — port 137 • NetBIOS Datagram Server — port 138 • Bootstrap Protocol (BOOTP) — port 67 • TACACS – UDP port 49 Reference: http://www. router(config)#snmp-server host 172. the engineer is not concerned with authentication or encryption. Most companies have decided that the information being transmitted isn’t valuable enough to be worth the extra effort in upgrading to SNMPv3.201.CareerCert. Which command satisfies the requirements of this scenario? A. The problem of course is that the SNMP statistical payload is not encrypted and authentication is passed in cleartext.16.201.28 informs version 2c CISCORO C.16. However. router(config)#snmp-server host 172. Infrastructure Services QUESTION NO: 61 A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications. but I would suggest otherwise. ip helper-address {ip address} When configuring the ip helper-address command.16. Cisco 300-101 Exam broadcasts will be forwarded to the unicast address which is specified with the ip helper command.201.28 informs version 3 auth CISCORO Answer: A Explanation: Most network admins and engineers are familiar with SNMPv2c which has become the dominant SNMP version of the past decade.info 104 .html Topic 6. www. It’s simple to configure on both the router/switch-side and just as easy on the network monitoring server. router(config)#snmp-server host 172.201.

“AuthNoPriv109thernet109ationre authenticated but not encrypted – auth keyword in CLI). username serves as a replacement for community string).info 105 . SNMP version 2 uses community strings (think cleartext passwords.com/snmp-version-3/ QUESTION NO: 62 When using SNMPv3 with NoAuthNoPriv. Reference: http://www. which determines the access policy for its users. there are some major changes under the hood.com/2008/07/19/snmpv3-tutorial/ QUESTION NO: 63 After a recent DoS attack on a network. The SNMPv3 implementations could be configured to use either of the models on per-group basis (in case if “noAuthNoPriv” is configured. SNMPv1 and SNMPv2 models only support the “noAuthNoPriv” model since they use plain community string to match the incoming packets. no encryption) to authenticate polling and trap delivery. Reference: http://blog.CareerCert. SNMP version 3 moves away from the community string approach in favor of user-based authentication and view-based access control. which string is matched for authentication? A. Cisco 300-101 Exam Like IPv4 to Ipv6.ccnpguide. SNMPv2. username B. Finally. community-string D. each user is added to a group. views. rather they are simply a means to determine who can authenticate to the device. groups. Users. Which two actions can you take to provide enhanced www. The view is used to define what the user account may access on the IOS device. password C. senior management asks you to implement better logging functionality on all IOS-based devices. The following security levels exits: “noAuthNoPriv” (no authentiation and no encryption – noauth keyword in CLI). SNMPv3. “AuthPriv” (messages are authenticated and encrypted – priv keyword in CLI). The users are not actual local user accounts.ine. encryption-key Answer: A Explanation: The following security models exist: SNMPv1.

This can aid in pinpointing the exact time of events. and warning levels). To limit syslog messages sent to the router’s history table and to an SNMP network management station based on severity.) A. alert. Cisco devices Log error messages of severity levels 0 through 4 (emergency. critical. By default.CareerCert. SNMP E.B Explanation: The optional msec keyword specifies the date/time format should include milliseconds. Four basic ways exist for setting up the router to generate a core dump: • Using Trivial File Transfer Protocol (TFTP) • www. Core dumps are generally very useful to your technical support representative.info 106 . B. D. Use the msec option to enable service time stamps. Answer: A. in other words. Disable event logging on all noncritical items. or to correlate the order that the events happened. more granular monitoring can occur. and SNMP messages will be sent by the less sever (5-7) messages. which feature can the engineer use to create a crash collection? A. NetFlow Answer: B Explanation: When a router crashes. In this situation. it is sometimes useful to obtain a full copy of the memory image (called a core dump) to identify the cause of the crash. error. “saving level warnings or higher. use the logging history command in global configuration mode. Cisco 300-101 Exam logging results? (Choose two. core dumps C.” By increasing the severity level. secure copy protocol B. warm reloads D. QUESTION NO: 64 A network engineer finds that a core router has crashed without warning. Specify a logging rate limit. Increase the logging history C. Set the logging severity level to 1. E.

D. the NTP service is activated (if it has not already been activated) and the device is configured to receive NTP broadcast packets on a specified interface simultaneously.info 107 .cisco.CareerCert. Assuming that an NTP server is already set up. Reference: http://www.com/c/en/us/td/docs/ios-xml/ios/bsm/command/bsm-xe-3se-3850-cr- book/bsm-xe-3se-3850-cr-book_chapter_00.html QUESTION NO: 66 What is a function of NPTv6? www. It enables receiving NTP broadcasts on the interface where the command was executed.com/en/US/docs/internetworking/troubleshooting/guide/tr19aa.html QUESTION NO: 65 A network engineer is trying to implement broadcast-based NTP in a network and executes the ntp broadcast client command. Cisco 300-101 Exam Using File Transfer Protocol (FTP) • Using remote copy protocol (rcp) • Using a Flash disk Reference: http://www. Command Description ntp broadcast client Allows the system to receive NTP broadcast packets on an interface. what is the result of the command? A. It enables a device to be an NTP peer to another device.cisco. B. It enables receiving NTP broadcasts on all interfaces globally. C. When you use the ntp broadcast client command. Answer: A Explanation: The NTP service can be activated by entering any ntp command. It enables a device to receive NTP broadcast and unicast packets.

The NAT64 server then creates a NAT-mapping between the Ipv6 and the Ipv4 address. It is transport-agnostic with respect to transports that do not checksum the IP header. It rewrites transport layer headers. see RFC 6052. NATng C. To avoid as many of the issues associated with NAPT44 as possible. Which feature allows Ipv6 devices to communicate with Ipv4 servers? A. Reference: http://tools. dual-stack NAT E. The Ipv6 client embeds the Ipv4 address it wishes to communicate with using these bits.CareerCert. B. NAT B.ietf. It maintains a per-node state. The NAT64 server is the endpoint for at least one Ipv4 address and an Ipv6 network segment of 32-bits (for instance 64:ff9b::/96. C. and sends its packets to the resulting address.org/html/rfc6296 QUESTION NO: 67 Ipv6 has just been deployed to all of the hosts within a network. and to transports that use the TCP/UDP/DCCP (Datagram Congestion Control Protocol) pseudo-header and checksum NPTv6 provides a simple and compelling solution to meet the address-independence requirement in Ipv6. allowing them to communicate. www. Answer: C Explanation: RFC 6296 describes a stateless Ipv6-to-Ipv6 Network Prefix Translation (NPTv6) function. checksum-neutral. It is checksum-neutral. algorithmic translation function. The address-independence benefit stems directly from the translation function of the network prefix translator. and nothing else. DNS64 Answer: C Explanation: NAT64 is a mechanism to allow Ipv6 hosts to communicate with Ipv4 servers. NPTv6 is defined to include a two-way. D. NAT64 D. but not to the servers. RFC 6146). designed to provide address independence to the edge network.info 108 . It interferes with encryption of the full IP payload. such as SCTP. Cisco 300-101 Exam A.

info 109 . IP SLAs uses the control protocol to notify the IP SLAs responder to enable the target port temporarily. Flow-label marking in 1280-byte or larger packets is enabled.0. because the target is not a Cisco device and a well-known TCP port is used. In this example. In this example. The operation is scheduled to start immediately.0.1 port 23 Reference: http://www. as shown in the “TCP Connect Operation” figure in the “Information About the IP SLAs TCP Connect Operation” section.org/wiki/NAT64 QUESTION NO: 68 A network engineer initiates the ip sla responder tcp-connect command in order to gather statistics for performance gauging. Cisco 300-101 Exam Reference: http://en. service-oriented C.1). the control protocol is disabled on the source (Device B). there is no need to send the control message.CareerCert. connection-oriented D.0. Which type of statistics does the engineer see? A.wikipedia.html QUESTION NO: 69 A network engineer executes the “ipv6 flowset” command.cisco. Device A (target device) Configuration configure terminal ip sla responder tcp-connect ipaddress 10.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt- book/sla_tcp_conn. application-oriented Answer: C Explanation: Configuration Examples for IP SLAs TCP Connect Operations The following example shows how to configure a TCP Connection-oriented operation from Device B to the Telnet port (TCP port 23) of IP Host 1 (IP address 10. What is the result? A. connectionless-oriented B. This action allows the responder to reply to the TCP Connect operation.0. www.

configure terminal 3.info 110 . Ipv6 PMTU is enabled on the router. D. Ipv6 flow control is enabled on the router. ipv6 flowset 4.CareerCert. C. Flow-set marking in 1280-byte or larger packets is enabled. Cisco 300-101 Exam B. Step 3 ipv6 flowset www. clear ipv6 mtu DETAILED STEPS Command or Action Purpose Step 1 enable Example: Device> enable Enables privileged EXEC mode. enable 2. exit 5. SUMMARY STEPS 1. Answer: A Explanation: Enabling Flow-Label Marking in Packets that Originate from the Device This feature allows the device to track destinations to which the device has sent packets that are 1280 bytes or larger. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode.

adjacency issues Answer: A Explanation: Table 5 show ip flow export Field Descriptions Field Description Exporting flows to 10. 0 flows failed due to lack of export packet No memory was available to create an export packet. 11 flows exported in 8 udp datagrams The total number of export packets sent. Version 5 flow records Specifies the version of the flow. Cisco 300-101 Exam Example: Device(config)# ipv6 flowset Configures flow-label marking in 1280-byte or larger packets sent by the device.1.1.CareerCert. Which line in the output indicates that the send queue is full and export packets are not being sent? A.cisco. enqueuing for the RP C.1 Specifies the source address or interface. Exporting using source IP address 10.html QUESTION NO: 70 A network engineer executes the show ip flow export command. fragmentation failures D.1 Specifies the export destinations and ports.1.1.com/c/en/us/td/docs/ios-xml/ios/ipv6_basic/configuration/15-mt/ip6b- 15-mt-book/ip6-mtu-path-disc. 0 export packets were sent up to process level www.2.3. The ports are in parentheses. Reference: http://www.info 111 . and the total number of flows contained within them. output drops B.1 (1000) and 10.

10. Answer: D Explanation: Configuring NAT to Allow Internal Users to Access the Internet Using Overloading NAT Router interface 116thernet 0 ip address 10. The command access-list 1 permit any defines only one machine that is allowed through the tunnel. The command access-list 1 defines interesting traffic that is allowed through the tunnel. The command ip nat inside source list 1 int s0/0 overload disables “many-to-one” access for all devices on a defined segment to share a single IP address upon exiting the external interface.html QUESTION NO: 71 A network engineer is asked to configure a “site-to-site” Ipsec VPN tunnel. The command ip nat inside source list 1 int s0/0 overload provides “many-to-one” access for all devices on a defined segment to share a single IP address upon exiting the external interface. possibly because another feature requires running on the packet.info 112 . Reference: http://www.255.255. Which functions do the two commands serve in this scenario? A. D.com/c/en/us/td/docs/ios/12_0s/feature/guide/oaggnf. One of the last things that the engineer does is to configure an access list (access-list 1 permit any) along with the command ip nat inside source list 1 int s0/0 overload.CareerCert.10.cisco. 0 export packets were dropped due to output drops Indicates that the send queue was full while the packet was being transmitted.0 www.1 255. 0 export packets were dropped enqueuing for the RP 0 export packets were dropped due to IPC rate limiting Indicates that there was a problem transferring the export packet between the RP and the line card. 0 export packets were dropped due to fragmentation failures 0 export packets were dropped due to encapsulation fixup failures Indicates that the packet was dropped because of problems constructing the IP packet. B. C. 0 export packets were dropped due to no fib 0 export packets were dropped due to adjacency issues Indicates that CEF was unable to switch the packet or forward it up to the process level. Cisco 300-101 Exam The packet could not be processed by CEF or by fast switching.

255.20.address.0. ip nat inside source list 7 pool ovrld overload ! ! ! ! !--.info 113 .0 ip nat inside !--. Ip nat pool ovrld 172.16. !--.are permitted by access-list 7 has the source address !--.Translations are overloaded.1 prefix 24 ! !--. Interface serial 0 ip address 172.Defines serial 0 with an IP address and as a NAT outside interface.255.1 172.0.10.10. which allows multiple inside !--.10.0 0.translated to an address out of the NAT pool named ovrld.20.0.0 ip nat outside !--.16. Cisco 300-101 Exam ip nat inside !--.CareerCert. 172.devices to be translated to the same valid IP address.10.16.31 www.10.Defines a NAT pool named ovrld with a range of a single IP !--.Defines Ethernet 1 with an IP address and as a NAT inside interface. Interface 116thernet 1 ip address 10.10.Indicates that any packets received on the inside interface that !--.31 access-list 7 permit 10.64 255.0 0. Access-list 7 permit 10.1 255.16.10.255.Defines Ethernet 0 with an IP address and as a NAT inside interface.255.10.0.1.

the HSRP priority is reduced. Reference: http://www.10. This means that another HSRP router with higher priority can become the active router if that router has standby preempt enabled.info 114 . so when this interface is shut down the HSRP priority for that router will be lowered and the other HSRP router will then become the active one. D. B.CareerCert.10.10. Reference: http://www. Loopback interfaces can be tracked.cisco.cisco. Enable HSRPv2 under global configuration.10.Access-list 7 permits packets with source addresses ranging from !--. C. as an alternative to powering down the active router and letting the network respond accordingly.31.shtml QUESTION NO: 72 A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows. The keyword overload used in the ip nat inside source list 7 pool ovrld overload command allows NAT to translate multiple inside devices to the single address in the pool.10.31 and 10.20.0 through 10.com/c/en/us/support/docs/ip/hot-standby-router-protocol-hsrp/13780- 6. which allows for maintenance mode.html www. Adjust the HSRP priority without the use of preemption. Note in the previous second configuration.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.10. Disable and enable all active interfaces on the active HSRP node. the NAT pool “ovrld”only has a range of one address. Track the up/down state of a loopback interface and shut down this interface during maintenance. Which action will allow for manual switching of HSRP nodes? A. Cisco 300-101 Exam !--. Answer: A Explanation: The standby track command allows you to specify another interface on the router for the HSRP process to monitor in order to alter the HSRP priority for a given group. If the line protocol of the specified interface goes down.10.20.0 through 10.

The command ip flow-capture fragment-offset has been enabled. a flow is identified as the combination of the following key fields: Reference: http://www. Which feature should the engineer use to gather the required information? A. NetFlow D.html QUESTION NO: 74 An organization decides to implement NetFlow on its network to monitor the fluctuation of traffic that is disrupting core services. Answer: A Explanation: We came across a recent issue where a user setup a router for NetFlow export but was unable to www. D.info 115 . the network engineer is unable to see OUT traffic on the interfaces. Cisco 300-101 Exam QUESTION NO: 73 A network engineer is notified that several employees are experiencing network performance related issues. Specifically. What can you determine based on this information? A. Cisco Express Forwarding has not been configured globally. SNMP B.com/en/US/docs/ios-xml/ios/netflow/configuration/12-4t/cfg-nflow- data-expt. C.CareerCert. After reviewing the output of NetFlow. Syslog E.cisco. B. and bandwidth-intensive applications are identified as the root cause. WCCP Answer: C Explanation: NetFlow Flows Key Fields A network flow is identified as a unidirectional stream of packets between a given source and destination--both are defined by a network-layer IP address and transport-layer source and des—nation port numbers. Cisco IOS EEM C. NetFlow output has been filtered by default. In order to identify which specific type of traffic is causing this slowness. Flow Export version 9 is in use. information such as the source/destination IP and Layer 4 port numbers is required.

To enable CEF. Based on the routing table. The FIB is organized differently than the routing table and CEF uses the FIB to decide which interface to send traffic from.html www. the NetFlow packets exported from the router will have “Destination interface” as “null” and this leads NetFlow Analyzer to show no OUT traffic for the interfaces. Enabling and Disabling CEF is easy. Switching is what a router does when it makes the following decisions: 1. Any NetFlow analyzer product will calculate the OUT traffic for an interface based on the Destination Interface value present in the NetFlow packets exported from the router. simply use the ‘no’ form of the command. Reference: https://blogs. Why CEF Needed when enabling NetFlow ? CEF is a prerequisite to enable NetFlow on the router interfaces. What is CEF? CEF is one of the available switching options for Cisco routers. This is why this topic is about Cisco Express Forwarding. CEF decides through which interface traffic is exiting the router. Cisco 300-101 Exam see the OUT traffic for the interfaces in NetFlow Analyzer. 2. CEF creates its own table. What is switching? A Router must make decisions about where to forward the packets passing through. CEF can switch traffic faster than route-caching using fast-switching How to enable CEF? CEF is disabled by default on all routers except the 7xxx series routers. ‘no ip cef‘.manageengine. If the destination is reachable. This decision- making process is called “switching”. CEF offers the following benefits: 1. called the Forwarding Information Base (FIB).com/network-2/netflowanalyzer/2010/05/19/need-for-cef- in-netflow-data-export. When enabled.CareerCert. go into global configuration mode and enter the CEF command. Router# config t Router(config)# ip cef Router(config)# To disable CEF. If the CEF is disabled on the router. CEF was enabled at the global level and within seconds. what is the next hop of the router and which interface will the router use to get to that destination. 2. Without enabling the CEF on the router. Better performance than fast-switching (the default) and takes less CPU to perform the same task. NetFlow Analyzer started showing OUT traffic for the interfaces. Whether to forward or not forward the packets after checking that the destination for the packet is reachable. Overall. That is when we noticed the ‘no ip cef’ command on the router. Every NetFlow configuration aspect was checked and nothing incorrect was found. ie. the NetFlow packets did not mark the destination interfaces and so NetFlow Analyzer was not able to show the OUT traffic for the interfaces. allows for advanced features like NBAR 3.info 116 .

What is the best solution to ensure compliance with this new policy? A. NAT44 www. and Ipv6 to Ipv6 translations at the Internet edge are performed. configuration of the specified flow exporter B.CareerCert. status and statistics of the specified flow monitor D.info 117 .html QUESTION NO: 76 A company’s corporate policy has been updated to require that stateless. NAT64 B. The following command is entered: switch#show flow exporter Flow_Exporter-1 What is the expected output? A. configuration of the specified flow monitor Answer: B Explanation: show flow exporter exporter-name Example: Device# show flow exporter FLOW_EXPORTER-1 (Optional) Displays the current status of the specified flow exporter Reference: http://www.cisco.com/en/US/docs/ios-xml/ios/fnetflow/configuration/15-mt/cfg-de- fnflow-exprts. 1-to-1. current status of the specified flow exporter C. Cisco 300-101 Exam QUESTION NO: 75 A network engineer has left a NetFlow capture enabled over the weekend to gather information regarding excessive bandwidth utilization.

technology facilitates communication between IPv6-only and IPv4-only hosts and networks (whether in a transit.html www. The DnS64 and NAT64 functions are completely separated.) A. Cisco 300-101 Exam C. an access. The translation mechanism is stateless and provides a 1:1 relationship between the internal addresses and external addresses. stateless translation E. This solution allows both enterprises and ISPs to accelerate IPv6 adoption while simultaneously handling IPv4 address depletion. The use cases for NPTv6 outlined in the RFC include peering with partner networks. Reference: http://www.com/c/dam/en/us/td/docs/solutions/SBA/August2012/Cisco_SBA_BN_IPv6Addre ssingGuide-Aug2012.com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6- solution/white_paper_c11-676278.info 118 .pdf QUESTION NO: 77 Which two functions are completely independent when implementing NAT64 over NAT-PT? (Choose two. or NAT64. DNS B.B Explanation: Work Address Translation IPv6 to IPv4. NPTv4 E. session handling Answer: A. multi homing. and redundancy and load sharing. port redirection D. which is essential to the superiority of NAT64 over NAT-PT. or an edge network).cisco. Reference: http://www.cisco. NAT C. NPTv6 Answer: E Explanation: NPTv6 provides a mechanism to translate the private internal organization prefixes to public globally reachable addresses. NATv6 D.CareerCert.

hence lacks in end-to-end address transparency No state or bindings created on the translation State or bindings are created on every unique translation Requires IPv4-translatable IPv6 addresses assignment (mandatory requirement) No requirement on the nature of IPv6 address assignment Requires either manual or DHCPv6 based address assignment for IPv6 hosts Free to choose any mode of IPv6 address assignment viz. automatic E.info 119 . Manual.CareerCert. Table 2. stateful C. there are important differences. SLAAC Reference: http://www. stateless B.cisco. dynamic Answer: A. Differences Between Stateless NAT64 and Stateful NAT64 Stateless NAT64 Stateful NAT64 1:1 translation 1:N translation No conservation of IPv4 address Conserves IPv4 address Assures end-to-end address transparency and scalability Uses address overloading.html www. The following table provides a high-level overview of the most relevant differences. DHCPv6. static F. Cisco 300-101 Exam QUESTION NO: 78 Which two methods of deployment can you use when implementing NAT64? (Choose two.) A. manual D.com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6- solution/white_paper_c11-676277. functional G.B Explanation: While stateful and stateless NAT64 perform the task of translating IPv4 packets into IPv6 packets and vice versa.

Reference: http://www.com/c/en/us/td/docs/ios/fnetflow/command/reference/fnf_book/fnf_01. Cisco 300-101 Exam QUESTION NO: 79 Which NetFlow component is applied to an interface and collects information about flows? A.CareerCert. Which statement about the output of the show flow-sampler command is true? A.html#wp13 14030 QUESTION NO: 80 Refer to the exhibit.info 120 . D. Flow monitors consist of a record and a cache. B. each packet randomly chosen from every group of 100 packets. Flow data is collected from the network traffic during the monitoring process based on the key and nonkey fields in the record. www. The sampler matched 10 packets. The sampler matched 10 packets. The sampler matched 10 packets. flow collector Answer: A Explanation: Flow monitors are the NetFlow component that is applied to interfaces to perform network traffic monitoring. The sampler matched 10 packets. The flow monitor cache is automatically created at the time the flow monitor is applied to the first interface. one packet every 100 seconds. C. which is configured for the flow monitor and stored in the flow monitor cache. one packet every 100 packets. flow sampler D. each one randomly chosen from every 100-second interval.cisco. You add the record to the flow monitor after you create the flow monitor. flow exporter C. flow monitor B.

It configures the router to export cache flow information about flows with destination IP 10. 302nd.1 5858? A. D.10.10. This sample configuration provides NetFlow data on 1 percent of total traffic. B.html#wp1084291 QUESTION NO: 81 What is the result of the command ip flow-export destination 10.1 on port UDP/5858.cisco. if you set the sampling rate to 1 out of 100 packets. incoming packets are randomly selected so that one out of each n sequential packets is selected on average for NetFlow processing. For example. The n value is a parameter from 1 to 65535 packets that you can configure. Answer: A www.10.10.10.1 and port UDP/5858. It configures the router to receive cache flow information from IP 10. Cisco 300-101 Exam Answer: A Explanation: The sampling mode determines the algorithm that selects a subset of traffic for NetFlow processing. then NetFlow might sample the 5th.10.10. It configures the router to export cache flow information to IP 10. 199th. and so on packets.1 and port UDP/5858.com/c/en/us/td/docs/ios/12_0s/feature/guide/nfstatsa. Table 2 show flow-sampler Field Descriptions Field Description Sampler Name of the flow sampler id Unique ID of the flow sampler packets matched Number of packets matched for the flow sampler mode Flow sampling mode sampling interval is Flow sampling interval (in packets) Reference: http://www. It configures the router to receive cache flow information about flows with destination IP 10.10.1 on port UDP/5858. In the random sampling mode that Random Sampled NetFlow uses.CareerCert. 120th.info 121 .10.10. C.

DHCPACK. This check is performed only if the DHCP snooping MAC address verification option is turned on. Cisco 300-101 Exam Explanation: To enable the exporting of information in NetFlow cache entries.cisco. Syntax Description ip-address IP address of the workstation to which you want to send the NetFlow information. The switch forwards the DHCP packet unless any of the following conditions occur (in which case the packet is dropped): • The switch receives a packet (such as a DHCPOFFER. traffic from a trusted DHCP server to client D. DHCP messages where the source MAC and client MAC do not match C. DHCPNAK.info n the binding table 122 . or DHCPLEASEQUERY packet) from a DHCP server outside the network or firewall. Reference: http://www.com/c/en/us/td/docs/ios/12_0s/feature/guide/12s_mdnf. and the source MAC address and the DHCP client hardware address do not match. • The switch receives a DHCPRELEASE or DHCPDECLINE message from an untrusted host with an entry in the DHCP s www. Udp-port UDP protocol-specific port number. DHCP messages where the destination MAC and client MAC do not match Answer: B Explanation: The switch validates DHCP packets received on the untrusted interfaces of VLANs with DHCP snooping enabled. discover messages B.CareerCert. use the ip flow-export destination command in global configuration mode. • The switch receives a packet on an untrusted interface.html#wp1023091 QUESTION NO: 82 Which type of traffic does DHCP snooping drop? A.

which enables untrusted aggregation- switch ports to accept DHCP packets that include option-82 information.0.B Explanation: QUESTION NO: 84 The following configuration is applied to a router at a branch site: ipv6 dhcp pool dhcp-pool dns-server 2001:DB8:1:B::1 dns-server 2001:DB8:3:307C::42 domain-name example. Cisco 300-101 Exam does not match the interface on which the message was received.cisco. router#show memory summary C.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12- 2SX/configuration/guide/book/snoodhcp. you can enable the DHCP option-82 on untrusted port feature. router#show memory dead D. Reference: http://www. Configure the port on the edge switch that connects to the aggregation switch as a trusted port. router#show memory allocating-process table B. To support trusted edge switches that are connected to untrusted aggregation-switch ports.html Topic 7. • The switch receives a DHCP packet that includes a relay agent IP address that is not 0.0.com ! www. Mix Questions QUESTION NO: 83 Which two commands would be used to troubleshoot high memory usage for a process? (Choose two.info 123 . router#show memory events E. router#show memory processor statistics Answer: A.CareerCert.) A.0.

Cisco 300-101 Exam
If IPv6 is configured with default settings on all interfaces on the router, which two dynamic IPv6
addressing mechanisms could you use on end hosts to provide end-to-end connectivity? (Choose
two.)

A. EUI-64
B. SLAAC
C. DHCPv6
D. BOOTP

Answer: A,B
Explanation:

QUESTION NO: 85

The enterprise network WAN link has been receiving several denial of service attacks from both
IPv4 and IPv6 sources. Which three elements can you use to identify an IPv6 packet via its
header, in order to filter future attacks? (Choose three.)

A. Traffic Class
B. Source address
C. Flow Label
D. Hop Limit
E. Destination Address
F. Fragment Offset

Answer: A,C,D
Explanation:

QUESTION NO: 86

A network engineer has set up VRF-Lite on two routers where all the interfaces are in the same
VRF. At a later time, a new loopback is added to Router 1, but it cannot ping any of the existing
interfaces. Which two configurations enable the local or remote router to ping the loopback from
any existing interface? (Choose two.)

A. adding a static route for the VRF that points to the global route table
B. adding the loopback to the VRF
C. adding dynamic routing between the two routers and advertising the loopback
D. adding the IP address of the loopback to the export route targets for the VRF
E. adding a static route for the VRF that points to the loopback interface

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Cisco 300-101 Exam
F. adding all interfaces to the global and VRF routing tables

Answer: A,B
Explanation:

QUESTION NO: 87

Refer to the exhibit. The network setup is running the RIP routing protocol. Which two events will
occur following link failure between R2 and R3? (Choose two.)

A. R2 will advertise network 192.168.2.0/27 with a hop count of 16 to R1.
B. R2 will not send any advertisements and will remove route 192.168.2.0/27 from its routing
table.
C. R1 will reply to R2 with the advertisement for network 192.168.2.0/27 with a hop count of 16.
D. After communication fails and after the hold-down timer expires, R1 will remove the
192.168.2.0/27 route from its routing table.
E. R3 will not accept any further updates from R2, due to the split-horizon loop prevention
mechanism.

Answer: A,C
Explanation:

QUESTION NO: 88

Which three benefits does the Cisco Easy Virtual Network provide to an enterprise network?
(Choose three.)

A. simplified Layer 3 network virtualization
B. improved shared services support
C. enhanced management, troubleshooting, and usability
D. reduced configuration and deployment time for dot1q trunking

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Cisco 300-101 Exam
E. increased network performance and throughput
F. decreased BGP neighbor configurations

Answer: A,B,C
Explanation:

QUESTION NO: 89

Which technology was originally developed for routers to handle fragmentation in the path
between end points?

A. PMTUD
B. MSS
C. windowing
D. TCP
E. global synchronization

Answer: A
Explanation:

QUESTION NO: 90

Which traffic characteristic is the reason that UDP traffic that carries voice and video is assigned to
the queue only on a link that is at least 768 kbps?

A. typically is not fragmented
B. typically is fragmented
C. causes windowing
D. causes excessive delays for video traffic

Answer: A
Explanation:

QUESTION NO: 91

A network administrator is troubleshooting a DMVPN setup between the hub and the spoke.
Which action should the administrator take before troubleshooting the IPsec configuration?

www.CareerCert.info 126

In which situation is the debugging output generated? A. The command is executed while configuring a point-to-multipoint Frame Relay interface. Cisco 300-101 Exam A. when packets on the interface are received and logging buffered is enabled C. when packets on the interface are received and forwarded to a configured syslog server D. when packets on the interface are received and the interface is shut down Answer: A Explanation: QUESTION NO: 94 Refer to the exhibit. B. D. Verify ISAKMP. a network engineer is using the AuthNoPriv security level. They become unauthenticated and unencrypted. Verify NHRP. Answer: A Explanation: QUESTION NO: 92 To configure SNMPv3 implementation. Answer: B Explanation: QUESTION NO: 93 A network engineer is investigating the cause of a service disruption on a network segment and executes the debug condition interface fastethernet f0/0 command. C. They become authenticated and unencrypted. What effect does this action have on the SNMP messages? A.CareerCert. D.info 127 . Verify crypto maps. C. They become authenticated and encrypted. B. Which type of IPv6 address is portrayed in the exhibit? www. Verify the GRE tunnels. They become unauthenticated and encrypted. when packets on the interface are received and the interface is operational B.

CareerCert. multicast Answer: A Explanation: QUESTION NO: 95 An engineer executes the ip flow ingress command in interface configuration mode. global D. It allows for traffic separation and improved network efficiency. D. It enables the collection of IP flow samples arriving to the interface. It enables IP flow while disabling IP CEF on the interface. It reduces the need for common services separation. What is the result of this action? A. It enables the collection of IP flow samples leaving the interface. Cisco 300-101 Exam A.info 128 . link-local B. It introduces multi-VRF and label-prone network segmentation. It enables IP flow collection on the physical interface and its subinterfaces. C. site-local C. B. C. Answer: C Explanation: QUESTION NO: 97 www. Answer: A Explanation: QUESTION NO: 96 What is the primary service that is provided when you implement Cisco Easy Virtual Network? A. D. It requires and enhances the use of VRF-Lite. B.

Dual stack translates IPv4 addresses to IPv6 addresses. by creating a new FIB entry for the packet D. MS CHAP B. B.info 129 . Dual stack changes the IP addresses on hosts from IPv4 to IPv6 automatically.CareerCert. Dual stack translates IPv6 addresses to IPv4 addresses. by looking in the routing table for an alternate FIB entry Answer: B Explanation: QUESTION NO: 98 Which statement about dual stack is true? A. by dropping the packet C. Cisco 300-101 Exam How does an IOS router process a packet that should be switched by Cisco Express Forwarding without an FIB entry? A. by forwarding the packet B. C. Dual stack means that devices are able to run IPv4 and IPv6 in parallel. PAP Answer: D Explanation: QUESTION NO: 100 A router receives a routing advertisement for the same prefix and subnet from four different routing www. D. CDPCP C. Answer: B Explanation: QUESTION NO: 99 Which PPP authentication method sends authentication information in cleartext? A. CHAP D.

which route is the summarized route? A. iBGP D. Ethernet0/0 B. OI 2001:DB8::/48 [110/100] via FE80::A8BB:CCFF:FE00:6F00. Ethernet0/0 C. Ethernet0/0 D. OI 2001:DB8::/64 [110/100] via FE80::A8BB:CCFF:FE00:6F00. OI 2001:DB8::/32 [110/100] via FE80::A8BB:CCFF:FE00:6F00. When summarizing these routes. OSPF C. Cisco 300-101 Exam protocols. a public AS number C. OI 2001:DB8::/24 [110/100] via FE80::A8BB:CCFF:FE00:6F00.CareerCert. RIP B. Which advertisement is installed in the routing table? A.info 130 . Ethernet0/0 Answer: A Explanation: QUESTION NO: 102 Which type of BGP AS number is 64591? A. a private 4-byte AS number D. EIGRP Answer: D Explanation: QUESTION NO: 101 Refer to the exhibit. a private AS number B. a public 4-byte AS number www.

Cisco Easy VPN D. Cisco 300-101 Exam Answer: A Explanation: QUESTION NO: 103 Refer to the exhibit. B.CareerCert. to support multiple connections from multiple spoke devices? A. Either a firewall between the two routers or an ACL on the router is blocking UDP 57.info 131 . C. DMVPN B. Either a firewall between the two routers or an ACL on the router is blocking TCP 47. GETVPN C. FlexVPN Answer: A www. After configuring GRE between two routers running OSPF that are connected to each other via a WAN link. What is the reason for this? A. Either a firewall between the two routers or an ACL on the router is blocking IP protocol number 47. Either a firewall between the two routers or an ACL on the router is blocking IP protocol number 57. D. resulting in a single GRE tunnel interface on the hub. a network engineer notices that the two routers cannot establish the GRE tunnel to begin the exchange of routing updates. Answer: A Explanation: QUESTION NO: 104 Which Cisco VPN technology can use multipoint tunnel.

GREVPN Answer: B Explanation: QUESTION NO: 106 Which parameter in an SNMPv3 configuration offers authentication and encryption? A. DMVPN B. The router acts as an authoritative NTP clock and allows only 10 NTP client connections. Cisco Easy VPN C. B. router (config-line)# ntp master 10 Which statement about this command is true? A. www. Cisco 300-101 Exam Explanation: QUESTION NO: 105 Which Cisco VPN technology uses AAA to implement group policies and authorization and is also used for the XAUTH authentication method? A. noauth C. priv D. GETVPN D.CareerCert.info 132 . auth B. The router acts as an authoritative NTP clock at stratum 10. secret Answer: C Explanation: QUESTION NO: 107 Refer to the following configuration command.

1.255.16.255. The DHCP client is unable to receive a DHCP address from the DHCP server.CareerCert. Cisco 300-101 Exam C. RouterB(config-if)# ip helper-address 172.0 255.1. D. The router acts as an authoritative NTP clock with a priority number of 10.1.1 255.1. The router acts as an authoritative NTP clock for 10 minutes only.255.1.2 Which configuration is required on the Router B fastethernet 0/0 port in order to allow the DHCP client to successfully receive an IP address from the DHCP server? A.0 interface serial 0/0 ip address 10.255.16.252 ! ip route 172.255.255.0 10.1 255.1.31.2 www.1. Answer: B Explanation: QUESTION NO: 108 Refer to the exhibit. Consider the following output: hostname RouterB ! interface fastethernet 0/0 ip address 172.info 133 .

Answer: A Explanation: QUESTION NO: 111 Refer to the exhibit.CareerCert. any other return code means that the track's state is down.1 C.1.info 134 . an OK return code means that the track's state is up.16. RouterB(config-if)# ip helper-address 255. an OK or over threshold return code means that the track's state is down. Which statement about the configuration is true? www. When tracking state. It is used to translate an IPv6 address prefix to another IPv6 prefix. B. Answer: B Explanation: QUESTION NO: 110 Two aspects of an IP SLA operation can be tracked: state and reachability. D. It is used to translate IPv6 prefixes to IPv4 subnets with appropriate masks. an OK return code means that the track's state is down. any other return code means that the track's state is up. any other return code means that the track's state is up.255. Cisco 300-101 Exam B. When tracking state. RouterB(config-if)# ip helper-address 172. an OK or over threshold return code means that the track's state is up. Which statement about state tracking is true? A. When tracking state.255. any other return code means that the track's state is down. C.1 D. RouterB(config-if)# ip helper-address 172.31. It is used to translate IPv4 prefixes to IPv6 prefixes. C. D.255 Answer: A Explanation: QUESTION NO: 109 Which statement about the NPTv6 protocol is true? A.1. It is used to translate IPv4 addresses to IPv6 link-local addresses. When tracking state. B.

10.info 135 . www. Answer: A Explanation: QUESTION NO: 112 Refer to the exhibit.m. D. Which statement about the command output is true? A.10. B.1 on UDP port 5127. Jitter is being tested with TCP packets to port 65051. The monitor starts at 12:05:00 a. The packets that are being sent use DSCP EF. Cisco 300-101 Exam A. 20 packets are being sent every 30 seconds. C. The router exports flow information to 10.CareerCert.

10. D.1.1.10.2 on TCP port 5127. before any new NAT entries are populated into the translation table due to active NAT traffic. C. before any new NAT entries are populated into the translation table due to active NAT traffic.255. before any new NAT entries are populated into the translation table due to active NAT traffic. Clear the IP NAT translations using the reload command on the router. the following message is seen on the console: %Dynamic Mapping in Use.1.0 Upon entering the command on the IOS router. Cannot remove message or the %Pool outpool in use.10. before any new NAT entries are populated into the translation table due to active NAT traffic.10. B. then replace the NAT configuration quickly. Answer: B Explanation: QUESTION NO: 114 www. The router receives flow information from 10. Clear the IP NAT translations using the clear ip nat table * " command. then replace the NAT configuration quickly. C. The router receives flow information from 10.CareerCert. Answer: A Explanation: QUESTION NO: 113 A network engineer is trying to modify an existing active NAT configuration on an IOS router by using the following command: (config)# no ip nat pool dynamic-nat-pool 192. Cisco 300-101 Exam B.2 on UDP port 5127.1. The router exports flow information to 10.10. D.255. cannot destroy What is the least impactful method that the engineer can use to modify the existing IP NAT configuration? A.20 192. then replace the NAT configuration quickly.10.info 136 .1 on TCP port 5127. Clear the IP NAT translations using the clear ip nat translation * " command. Clear the IP NAT translations using the clear ip nat traffic * " command. then replace the NAT configuration quickly.254 netmask 255.

8.000 bytes C. path Answer: A. 62. site-local D.) A. multicast Answer: A Explanation: QUESTION NO: 115 Which three items can you track when you use two time stamps with IP SLAs? (Choose three. jitter C. anycast E. packet loss D. global C. 16. Cisco 300-101 Exam Which IPv6 address type is seen as the next-hop address in the output of the show ipv6 rip RIPng database command? A. load E.CareerCert.B. delay B. 24.000 bytes B.C Explanation: QUESTION NO: 116 If the total bandwidth is 64 kbps and the RTT is 3 seconds.info 137 . throughput F. 32. what is the bandwidth delay product? A.000 bytes D.000 bytes Answer: C Explanation: www.000 bytes E. link-local B.

Update: 20 seconds Expire: 120 seconds Flush: 160 seconds C. It manages the import and export of routes between two or more VRF instances. D. IP SLA D. which feature must be used in conjunction with the newly created tracking object to manipulate the traffic flow as required? A. It enables multicast distribution for VRF-Lite setups to enhance EGP routing protocol capabilities. It enables multicast distribution for VRF-Lite setups to enhance IGP routing protocol capabilities. Answer: C Explanation: QUESTION NO: 119 A network engineer has configured a tracking object to monitor the reachability of IP SLA 1. C.CareerCert. B. PBR C.info 138 . It extends the IP address to identify which VRF instance it belongs to. Update: 30 seconds Expire: 180 seconds Flush: 240 seconds B. Update: 10 seconds Expire: 60 seconds Flush: 80 seconds D. SAA E. Cisco 300-101 Exam QUESTION NO: 117 What are the default timers for RIPng? A. ACLs F. In order to update the next hop for the interesting traffic. IGP Answer: B www. Update: 5 seconds Expire: 30 seconds Flush: 40 seconds Answer: A Explanation: QUESTION NO: 118 What is the purpose of the route-target command? A. SNMP B.

one-way B. network switching loop C. route types C. Upon monitoring. network outage B. two-way C. They are also having latency issues communicating to the network drives of various departments. addressing information B. three-way D.info 139 . Cisco 300-101 Exam Explanation: QUESTION NO: 120 A route map uses an ACL. if the required matching is based on which criteria? A. AS paths D. wrong proxy configured Answer: B Explanation: QUESTION NO: 122 Which type of handshake does CHAP authentication use to establish a PPP link? A. metrics Answer: A Explanation: QUESTION NO: 121 Various employees in the same department report to the network engineer about slowness in the network connectivity to the Internet. Which option is the problem? A.CareerCert. four-way www. router configuration issue D. the engineer finds traffic flood in the network.

EAP E. Multiple PPPoE clients can use the same dialer interface.C Explanation: QUESTION NO: 124 Which statement is a restriction for PPPoE configuration? A. Answer: C Explanation: QUESTION NO: 125 Refer to the exhibit. B.CareerCert. www. D. Multiple PPPoE clients can use the same dialer pool.) A. A PPPoE session can be initiated only by the client.info 140 . WAP B. RADIUS Answer: B. A PPPoE session can be initiated only by the access concentrator. PAP C. Cisco 300-101 Exam Answer: C Explanation: QUESTION NO: 123 Which two authentication protocols does PPP support? (Choose two. CHAP D. C.

Cisco 300-101 Exam Which statement about the configuration is true? A. MPLS Answer: A Explanation: QUESTION NO: 127 www. Answer: D Explanation: QUESTION NO: 126 A company has their headquarters located in a large city with a T3 frame relay link that connects 30 remote locations that each have T1 frame relay connections. B.CareerCert. This configuration represents a complete PPPoE client configuration on an Ethernet connection. This configuration is incorrect because the MTU must match the ppp-max-payload that is defined. traffic shaping B. This configuration is missing an IP address on the dialer interface. This configuration is incorrect because the dialer interface number must be the same as the dialer pool number. Which technology must be configured to prevent remote sites from getting overwhelmed with traffic and prevent packet drops from the headquarters? A. GRE VPN D. D.info 141 . IPsec VPN C. C.

info 142 .) A. Ethernet interfaces C. routing protocol D. ISDN interfaces E. www. router advertisements C. routing type Answer: B Explanation: QUESTION NO: 129 Refer to the exhibit.D Explanation: QUESTION NO: 128 In IPv6. How is the prefix advertised? A. routing table B. auxiliary interfaces Answer: A. fiber interfaces D. SLAAC provides the ability to address a host based on a network prefix that is advertised from a local network router.CareerCert. Cisco 300-101 Exam On which two types of interface is Frame Relay switching supported? (Choose two. serial interfaces B.

ALS1(config-router)# passive-interface gi0/1 ALS1(config-router)# passive-interface gi0/2 ALS2(config-router)# passive-interface gi0/1 ALS2(config-router)# passive-interface gi0/2 Answer: C Explanation: QUESTION NO: 130 Refer to the exhibit. Cisco 300-101 Exam Which option prevents routing updates from being sent to the access layer switches? A. www. DWS1(config-router)# passive-interface gi1/1 DWS1(config-router)# passive-interface gi1/2 DWS2(config-router)# passive-interface gi1/1 DWS2(config-router)# passive-interface gi1/2 D.info 143 . ALS1(config-router)# passive-interface default ALS2(config-router)# passive-interface default C.CareerCert. DWS1(config-router)# passive-interface default DWS2(config-router)# passive-interface default B.

EIGRP allows a maximum of four paths across for load balancing traffic. B. By default.CareerCert. Core(config-router)# passive-interface Gi0/0 Core(config-router)# passive-interface Gi3/1 Core(config-router)# passive-interface Gi3/2 DHCP(config-router)# no passive-interface Gi1/0 C. D. EIGRP performs equal cost load balancing at least across four equal cost paths. By default. Internet(config-router)# passive-interface default Core(config-router)# passive-interface default DSW1(config-router)# passive-interface default DSW2(config-router)# passive-interface default Answer: C Explanation: QUESTION NO: 131 A network engineer is considering enabling load balancing with EIGRP. DHCP(config-router)# passive-interface default DHCP(config-router)# no passive-interface Gi1/0 Internet(config-router)# passive-interface Gi0/1 Internet (config-router)# passive-interface Gi0/2 B. EIGRP uses a default variance of 2 for load balancing. Core(config-router)# passive-interface default Core(config-router)# no passive-interface Gi0/0 Core(config-router)# no passive-interface Gi3/1 Core(config-router)# no passive-interface Gi3/2 D. EIGRP unequal path load balancing can result in routing loops. while still allowing routing update messages to flow to the Internet router and the distribution switches? A. Which consideration should be analyzed? A. C. www. Cisco 300-101 Exam Which option prevents routing updates from being sent to the DHCP router.info 144 .

backbone area D.CareerCert. EIGRP www. BGP B. and 7 only. tunnel destination address B. 2. Which option also is required on the tunnel interface before it is operational? A. Which type of area is this router connected to? A. 3. IPv6 address D. The engineer has assigned an IPv4 address on the tunnel and sourced the tunnel from an Ethernet interface. not-so-stubby area Answer: D Explanation: QUESTION NO: 133 An engineer is configuring a GRE tunnel interface in the default mode. tunnel protection Answer: A Explanation: QUESTION NO: 134 Which protocol is used in a DMVPN network to map physical IP addresses to logical IP addresses? A. LLDP C. keepalives C. stub area B. Cisco 300-101 Exam Answer: D Explanation: QUESTION NO: 132 The OSPF database of a router shows LSA types 1. totally stubby area C.info 145 .

C. RADIUS uses TCP. D. NHRP Answer: D Explanation: QUESTION NO: 135 Which two routing protocols are supported by Easy Virtual Network? (Choose two. TACACS+ separates authentication and authorization.) A. B.) A. RADIUS is more flexible than TACACS+ in router management. B. RADIUS and TACACS+ are client/server AAA protocols. EIGRP E. Answer: D Explanation: QUESTION NO: 137 Which two statements about AAA implementation in a Cisco router are true? (Choose two. RIPv2 B. BGP D. D.D Explanation: QUESTION NO: 136 Which statement is true? A. RADIUS and TACACS+ allow accounting of commands.CareerCert. RADIUS encrypts the entire body of the packet. Cisco 300-101 Exam D. C. www.info 146 . RADIUS and TACACS+ encrypt the entire body of the packet. TACACS+ encrypts only the password portion of a packet. IS-IS Answer: B. and TACACS+ uses UDP. OSPFv2 C.

source reachable via both Answer: D Explanation: QUESTION NO: 139 Refer to the exhibit. allow based on ACL match D.D Explanation: QUESTION NO: 138 Which option is invalid when configuring Unicast Reverse Path Forwarding? A. Answer: B. Neither RADIUS nor TACACS+ allow for accounting of commands. allow default route C.16. allow self ping to router B. while also limiting spoofed 10.0/24 network to successfully enter router R.0. Which option represents the minimal configuration that allows inbound traffic from the 172. Cisco 300-101 Exam E.CareerCert.info 147 . (config)#ip cef (config)#interface fa0/0 www.1.0/8 hosts that could enter router R? A.0. (config)#ip cef (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via rx allow-default B.

The client creates a VPN tunnel to an NTP server. (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via any Answer: A Explanation: QUESTION NO: 140 Which outbound access list.info 148 . D.10. ip access-list extended NO_HTTP deny tcp host 10.1? A. permits all traffic except for http traffic sourced from the workstation with IP address 10.10. ip access-list extended 200 deny tcp host 10.CareerCert. C. ip access-list extended 100 deny tcp host 10.10.10. The client polls NTP servers for time.1 any eq 80 permit ip any any C.) A. E. (config)#no ip cef (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via rx D. applied to the WAN interface of a router.10. ip access-list extended 10 deny tcp host 10.10. The client broadcasts NTP requests.10.1 any eq 80 D. B.1 eq 80 any permit ip any any B. Answer: A. Cisco 300-101 Exam (config-if)#ip verify unicast source reachable-via rx C.10.1 any eq 80 permit ip any any Answer: D Explanation: QUESTION NO: 141 Which two statements indicate a valid association mode for NTP synchronization? (Choose two.10.10. The client multicasts NTP requests. The client listens to NTP broadcasts.C www.

168.225 10.info 149 .200. It allows external clients coming from public IP 209. ip nat inside source list 10 interface FastEthernet0/2 overload D.1 to connect to a web server at www.50 80 209.201. B.1.165.0 overload C.50 to access external websites using TCP port 8080. ip nat outside source list 10 interface FastEthernet0/2 overload Answer: A Explanation: QUESTION NO: 143 Which statement describes what this command accomplishes when inside and outside interfaces are correctly identified for NAT? ip nat inside source static tcp 192.165.10. ip nat outside source static 209.165.10.CareerCert. ip nat inside source list 10 interface FastEthernet0/1 overload B. It allows host 192. Cisco 300-101 Exam Explanation: QUESTION NO: 142 Refer to the exhibit.1.168.201.1 8080 extendable A. Which command allows hosts that are connected to FastEthernet0/2 to access the Internet? A.

Cisco 300-101 Exam
192.168.1.50.
C. It allows external clients to connect to a web server hosted on 192.168.1.50.
D. It represents an incorrect NAT configuration because it uses standard TCP ports.

Answer: C
Explanation:

QUESTION NO: 144

Refer to the exhibit.

Which technology can be employed to automatically detect a WAN primary link failure and failover
to the secondary link?

A. HSRP
B. VRRP
C. IP SLA
D. multicast

Answer: C
Explanation:

QUESTION NO: 145

In which two ways can NetFlow data be viewed? (Choose two.)

A. CLI
B. NetFlow
C. built-in GUI
D. syslog server interface

www.CareerCert.info 150

Cisco 300-101 Exam
E. web interface

Answer: A,B
Explanation:

QUESTION NO: 146 DRAG DROP

Drag and drop the Cisco Express Forwarding adjacency types from the left to the correct type of
processing on the right.

Answer:

www.CareerCert.info 151

Cisco 300-101 Exam

Explanation:

www.CareerCert.info 152

Cisco 300-101 Exam QUESTION NO: 147 DRAG DROP Drag and drop the BGP states from the left to the matching definitions on the right.info 153 . www.CareerCert.

Cisco 300-101 Exam Answer: Explanation: www.info 154 .CareerCert.

www.CareerCert.info 155 . Cisco 300-101 Exam QUESTION NO: 148 DRAG DROP Drag and drop the IPv6 NAT characteristic from the left to the matching IPv6 NAT category on the right.

router(config-ip-sla)#icmp-echo 172.201.info 156 .16.16. router(config-ip-sla-echo)#timeout 3 www.201.) A.25 every 3 seconds using an ICMP echo packet via an ICMP echo probe.25 source-interface FastEthernet 0/0 B. Cisco 300-101 Exam Answer: Explanation: QUESTION NO: 149 An engineer is asked to monitor the availability of the next-hop IP address of 172.CareerCert. Which two commands accomplish this task? (Choose two.

201.25 source-port 23 F.16.info 157 . router(config-ip-sla)#udp-echo 172.25 interval 100 D. Cisco 300-101 Exam C.16. router(config-ip-sla)#icmp-jitter 172.201.CareerCert.D www. router(config-ip-sla-echo)#frequency 3 E. router(config-ip-sla-echo)#threshold 3 Answer: A.

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