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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starvation B.wikipedia. windowing E. jitter C. the same behavior would be observed. Although some UDP applications have application-level windowing. Reference: http://en. until there is space in the queue again. 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. the size of these queues is also limited. Specifically. The queue is allowed to fill to its maximum size. This effect is called TCP-starvation/UDP-dominance. While the network is stable. potentially giving up their bandwidth to drop-oblivious UDP flows.) A. latency D.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. the introduction of a sudden burst of traffic may cause large numbers of established. then TCP flows will continually lower their rates. and retransmission capabilities. and then any new packets are simply discarded.C. This causes problems when used on TCP/IP routers handling multiple TCP streams. Even if WRED is enabled on the service provider class. the queue is constantly full.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. especially when bursty traffic is present. and there are no problems except that the full queue results in high latency. However. as WRED (for the most part) only affects TCP-based flows. This can increase latency and lower the overall throughput.CareerCert. lower throughput Answer: A. most UDP transmitters are completely oblivious to drops and thus never lower transmission rates due to dropping. steady streams to lose packets simultaneously. flow control. www. The simplest technique to limit queue size is known as tail drop.info 4 . When TCP flows are combined with UDP flows in a single service provider class and the class experiences congestion. TCP transmitters will throttle-back flows when drops have been detected. Cisco 300-101 Exam Because routers have limited resources.

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

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

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. alphanumeric string up to 32 characters. Reference: http://www. The route options are as follows: • *—All routes. • route—An individual IP route. 7 .2. fast switching B. Routers offer better packet-transfer performance when fast switching is enabled. 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. Cisco Express Forwarding switching D.2 Clears one or more routes from both the unicast RIB and all the module FIBs. Cisco 300-101 Exam Example: switch(config)# clear ip route 10.2. • next-hop—The next-hop address • interface—The interface to reach the next-hop address.html QUESTION NO: 8 Which switching method is used when entries are present in the output of the command show ip cache? A.info ast switching. Destination addresses are stored in the high-speed cache to expedite forwarding. • prefix/length—Any IP prefix. Fast switchin www. The vrf-name can be any case-sensitive.cisco. process switching C.CareerCert.

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

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

TCP Keepalive Timer The TCP Keepalive Timer feature provides a mechanism to identify dead connections. starvation C.info 10 .CareerCert.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. Reference: http://www.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/xe- 3s/asr1000/iap-xe-3s-asr1000-book/iap-tcp. 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. average jitter. Which UDP characteristic does this scenario describe? A. When a TCP connection on a routing device is idle for too long. Several SNMP traps are available: round trip time. If a response packet (a TCP ACK packet) is not received after the device sends a specific number of probes. the connection is considered dead and the device initiating the probes frees resources used by the TCP connection.cisco. Each measurement operation can monitor against a pre-set performance threshold. the device sends a TCP keepalive packet to the peer with only the Acknowledgment (ACK) flag turned on. MOS. Cisco IOS IP SLAs generates an SNMP trap to alert management applications if this threshold is crossed. jitter Answer: A Explanation: Cisco IOS IP SLAs provides a proactive notification feature with an SNMP trap.845 UTC Thu Feb 3 2005 Latest operation return code: OK RTT Values: www. and connectivity tests. latency B. connectionless communication D. Cisco 300-101 Exam enable TCP ECN. nonsequencing unordered packets E. packet loss. one-way latency. jitter.

com/en/US/technologies/tk648/tk362/tk920/technologies_white_paper09186a008 02d5efe. thus. Specifically. 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.CareerCert. when UDP flows are assigned a lower priority queue C. This effect is called TCP starvation/UDP dominance. TCP flows continually lower their transmission rates. Reference: www. when TCP traffic is in the same class as UDP B. Even if WRED is enabled on the service-provider class. potentially giving up their bandwidth to UDP flows that are oblivious to drops.info 11 . 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. Although some UDP applications have application-level windowing. never lower transmission rates because of dropping. and retransmission capabilities. 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. most UDP transmitters are completely oblivious to drops and.cisco. When TCP flows are combined with UDP flows within a single service-provider class and the class experiences congestion. the same behavior would be observed because WRED (for the most part) manages congestion only on TCP-based flows.html QUESTION NO: 12 Under which condition does UDP dominance occur? A. flow control. when WRED is enabled D. TCP transmitters throttle back flows when drops are detected.

which task must be completed? A. vpdn enable 4. Enable QoS FIFO for PPPoE support.html Topic 2. enable 2.cisco. B. Layer 2 Technologies QUESTION NO: 13 Prior to enabling PPPoE in a virtual private dialup network group.info 12 Command or Action . Execute the vpdn enable command. protocol pppoe DETAILED STEPS www. Cisco 300-101 Exam http://www. Answer: B Explanation: Enabling PPPoE in a VPDN Group Perform this task to enable PPPoE in a virtual private dial-up network (VPDN) group. Disable CDP on the interface. D.2(13)T. request-dialin 6. vpdn-group name 5. C. SUMMARY STEPS 1. Restrictions This task applies only to releases prior to Cisco IOS Release 12.CareerCert. configure terminal 3.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoS- SRND-Book/VPNQoS. Execute the no switchport command.

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

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

the connection is still brought up and set as persistent. To configure a dialer interface as persistent. Step 6 Router(config-if)# dialer-group group-number Assigns the dialer interface to a dialer group. 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. Cisco 300-101 Exam Answer: B Explanation: A new interface configuration command.info 15 . Step 3 Router(config-if)# encapsulation type Specifies the encapsulation type.CareerCert. 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. 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. The command provides a default timer interval. Step 5 Router(config-if)# dialer pool number Specifies the dialing pool to use for calls to this destination. 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. When configured. allows a dial-on-demand routing (DDR) dialer profile connection to be brought up without being triggered by interesting traffic. www. If interesting traffic arrives before the timer expires. dialer persistent. the dialer persistent command starts a timer when the dialer interface starts up and starts the connection when the timer expires. or you can set a custom timer interval.

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

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

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

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

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

info 23 . To remove the autonomous-system for an EIGRP routing process from within a VPN VRF instance. 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. 40 Answer: A Explanation: Before you troubleshoot any OSPF neighbor-related issues on an NBMA network.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/ire_book/ire_a1. 10 B. use the no form of this command. 30 D. 20 C.CareerCert.cisco. Autonomous-system autonomous-system-number no autonomous-system autonomous-system-number Reference: http://www. 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. use the autonomous-system command in address-family configuration mode.html# wp1062796 QUESTION NO: 25 What is the default OSPF hello interval on a Frame Relay point-to-point network? A.

0. Cisco 300-101 Exam Broadcast 10 40 Non-Broadcast 30 120 Reference: http://www.3.cisco. distribute list 1 out B.” www. distribute list 2 out FastEthernet0/0 Answer: D Explanation: Access list 2 is more specific. Which command only announces the 1.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13693- 22.0/24.0/8 networks.0/24 network out of FastEthernet 0/0? A. This question also asks us to apply this distribute list only to the outbound direction of the fast Ethernet 0/0 interface.2. distribute list 2 out D.0. allowing only 1.html QUESTION NO: 26 Refer to the exhibit. so the correct command is “distribute list 2 out FastEthernet0/0.2.CareerCert. whereas access list 1 permits all 1.info 24 .3. distribute list 1 out FastEthernet0/0 C.

Why is the routing information not being learned by Router B? A.0.24 matches this.0. This translates to any prefix in the 10. the ge 24 term means greater than or equal to a /24 and the le 24 means less than or equal to /24. OSPFv3 timers were adjusted for fast convergence. 10. The networks were not advertised properly under the OSPFv3 process.0.info 25 .0/16 ge 24 le 24? A. Answer: D Explanation: show ipv6 traffic Field Descriptions Field Description source-routed Number of source-routed packets. IPv6 unicast routing is not enabled on Router A or Router B. the message "not a router" is found in the output.8. The networks that are advertised from Router A do not show up in Router B's routing table.0/23 Answer: B Explanation: With prefix lists.8. where X is any value in the 0-255 range. Cisco 300-101 Exam QUESTION NO: 27 Which prefix is matched by the command ip prefix-list name permit 10. B. so only a /24 is both greater than or equal to 24 and less than or equal to 24. 10. C.0. 10.0.8. truncated www.8.x. D. After debugging IPv6 packets. Only the choice of 10. QUESTION NO: 28 Router A and Router B are configured with IPv6 addressing and basic routing capabilities using oSPFv3.0/24 C. An IPv6 traffic filter is blocking the networks from being learned via the Router B interface that is connected to Router A. 10.1.8.0/16 D.0/24 network.9.0.8.CareerCert.0/24 B.

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

we have a fully functional EUI-64 format address. needs to be inverted. Cisco 300-101 Exam Next. Reference: https://supportforums. the address is globally unique. the address is locally administered and if 1. the seventh bit from the left. or the universal/local (U/L) bit. it maintains its original scope (global unique address is still global unique and vice versa). Once the above is done.5. This bit identifies whether this interface identifier is universally or locally administered. If 0.CareerCert. The reason for inverting can be found in RFC4291 section 2. It is worth noticing that in the OUI portion.info 27 .1. the globally unique addresses assigned by the IEEE have always been set to 0 whereas the locally created addresses have 1 configured.com/document/100566/understanding-ipv6-eui-64-bit- address www. when the bit is inverted. Therefore.cisco.

which is statically defined by the network administrator. as well as certain data. D. All local host traffic will be redirected to the router with the lowest ICMPv6 signature. Router solicitation messages. B. 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. If the host has a configured unicast address.CareerCert. Answer: B Explanation: Router Advertisements (RA) are sent in response to router solicitation messages. are sent by hosts at system startup so that the host can immediately autoconfigure without needing to wait for the next scheduled RA message. What is the expected acknowledgment and its usage? A.info 28 Additional information for hosts. which have a value of 133 in the Type field of the ICMP packet header. 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. the destination address in the RA message is the unicast address of the source of the router solicitation message. Routers on the Ipv6 segment will respond with an advertisement that provides an external path from the local subnet. if so. When an RA is sent in response to a router solicitation. The destination address in router solicitation messages is the all-routers multicast address with a scope of the link. 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. Given that router solicitation messages are usually sent by hosts at system startup (the host does not have a configured unicast address). the amount of time (in seconds) the router should be used as a default router) • www. the unicast address of the interface sending the router solicitation message is used as the source address in the message. where the DHCP server will allocate addresses to the local host. C. such as the hop limit and MTU a host should use in packets that it . such as prefix discovery. the source address in router solicitation messages is usually the unspecified Ipv6 address (0:0:0:0:0:0:0:0). Router acknowledgment messages will be forwarded upstream.

You have been asked to complete the implementation to allow this ping. •The serial link between Seattle and Chicago must be in OSPF area 21. The SO/0 interface on Chicago and the SO/1 interface on NewYork are in Area 0. ROUTE. Currently the implementation is partially completed.5/30 — Link between Seattle and Chicago Secret Password: cisco Chicago S0/0 192.9/30 — Link between Chicago and NewYork S0/1 192.54.16.16.168. OSPF has been configured on routers Chicago and NewYork.54. • The routing protocol for each interface must be enabled under the routing process.168.CareerCert. Network Information Seattle S0/0 192. Cisco 300-101 Exam Reference: http://www.info 29 . • The routing protocol must be enabled for each interface using the most specific wildcard mask possible.168. However.10/30 — Link between Chicago and NewYork www. •OSPF area 21 must not receive any inter-area or external routes.6/30 — Link between Seattle and Chicago Secre Password: cisco NewYork S0/1 192. they cannot ping from the serial interface of the Seattle router to the loopback interface of the NewYork router.168.com’s corporate implementation guidelines require: • The OSPF process ID for all routers must be 10.com is a small IT corporation that is attempting to implement the network shown in the exhibit.html QUESTION NO: 31 CORRECT TEXT Route. The loopback0 interface on NewYork is in Area 1.cisco.com/c/en/us/td/docs/ios/ipv6/configuration/guide/12_4t/ipv6_12_4t_book/ip6- addrg_bsc_con.

189 Secret Password: cisco www.CareerCert. Cisco 300-101 Exam Loopback0 172.189.16.info 30 .

info 31 . Seattle’s S0/0 IP Address is 192.5/30.16.168. and router hostnames may change. So. we need to find the network address and wildcard mask of 192. OSPF areas and process ID. the IP addressing.168.5/30 in order to configure the OSPF.16. but the overall solution is the same. Cisco 300-101 Exam Answer: Here is the solution below: Explanation: Note: In actual exam. www.CareerCert.

5) belongs to subnet 1 (4 to 7).168.info 32 . 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. find the 4th octet of the Network Address: The 4th octet of IP address (192.16.255.16. Subnet Mask: (Network Bits – 1’s. Cisco 300-101 Exam IP Address: 192.CareerCert.168.255.16.4 Broadcast Address: 192. First.7 Let’s find the wildcard mask of /30. hence the subnets will increment by 4.16. Network Address: 192. 256-252 = 4.168.168.5 /30 Subnet Mask: 255.252 Here subtract 252 from 2565.

0.4 0.3 area 21 Again. 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. we have to stop LSA Type 3 and Type 4.info 33 . In order to accomplish this. 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.16.168.3 area 21 One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route). we must stop LSA Type 5 if we don’t want to send external routes.0.0.CareerCert.0. area 21 should not receive any external or inter-area routes (except the default route).16. Seattle>enable Password: Seattle#conf t Seattle(config)#router ospf 10 Seattle(config-router)#network 192.4 0. Cisco 300-101 Exam in real exam). 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 192.168.

info 34 . and the R3 IP routing table only contains 2 10. Cisco 300-101 Exam QUESTION NO: 32 CORRECT TEXT JS Industries has expanded their business with the addition of their first remote office. 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. R3. Another network professional was tasked with implementing this solution. The remote office router (R3) was previously configured and all corporate subnets were reachable from R3.0.0. www. Currently EIGRP is configured on all routers R2. Once the issue has been resolved you should complete the task by configuring route summarization only to the remote office router R3. in the process of configuring EIGRP stub routing connectivity with the remote network devices off of R3 has been lost. However.CareerCert.0 subnets. Your task is to identify and resolve the cause of connectivity failure with the remote office router R3. and R4 in the network. You have corrected the fault when pings from R2 to the R3 LAN interface are successful.

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

CareerCert.info 36 . This keyword will also prevent any type of route from being sent. 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. Use the show running-config command on router R3. 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. Notice that R3 is configured as a stub receive-only router.

0.255. Notice that the eigrp stub command equals to the eigrp stub connected summary because the connected and summary options are enabled by default.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.0.CareerCert. 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.255.0. Next we will configure router R3 so that it has only 2 subnets of 10. We can’t get rid of it in the routing table no matter what technique we use to summary the networks.0 255.255.0.0.0. we will use the ip summary-address eigrp 123 10.0/24.0 network.3. R4> enable R4# conf t R4(config)# interface s0/0 R4(config-if)# ip summary-address eigrp 123 10.0.2.0.0. In conclusion.0 www.2.0 255.0 at the interface s0/0 of R4 to summary.2.0. the s0/0 interface of R4. There is one interesting thing about the output of the show ip route shown above: the 10. Therefore.info 37 . to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet. 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. In the output if we don’t see the summary line (like 10.0 255.0 so that all the ping can work well.2. which is a directly connected network of R3.

0. Finally don’t forget to use the copy run start command on routers R3 and R4 to save the configurations. But in your real exam.0 you will leave a /16 network in the output of the show ip route command.255.0.CareerCert. 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. R3(config-if)# end www. Null0” then you can summarize using the network 10. for example.0.0.0/8 is a summary.info 38 .0/16. notice that if you use another network than 10.0.0 255.0/8 to summary. Just for your information.0.2. if you don’t see the line “10.0. if you use the command ip summary-address eigrp 123 10. This summarization is better because all the pings can work well. Cisco 300-101 Exam Now we jump back to R3 and use the show ip route command to verify the effect.

CareerCert. 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. R4’s loopback address (FEC0:4:4) cannot be seen in R1’s Ipv6 routing table. 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.” QUESTION NO: 33 CORRECT TEXT ROUTE.com is a small IT corporation that has an existing enterprise network that is running Ipv6 0SPFv3. However. www. Special Note: To gain the maximum number of points you must remove all incorrect or unneeded configuration statements related to this issue.info 39 . Currently OSPF is configured on all routers. 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.

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

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

routers R2 and R3 must be configured with the area <area id> virtual- link <neighbor router-id>command. 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.CareerCert.2) + Configure virtual link on R3 (from the second output above.2.3. we can use a virtual link to connect to the backbone through a non-backbone area.4.3. where this is not possible.3. + Configure virtual link on R2 (from the first output above.3. In this case.4”): R3>enable www. the area 11 will become the transit area. 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). In some cases.info 42 . The area through which you configure the virtual link is known as a transit area. Therefore.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 3.4. not R2’s router-id 2.3 Save the configuration: R2(config-rtr)#end R2#copy running-config startup-config (Notice that we have to use neighbor router-id 3.2.

4. IT policy requires that all outbound HTTP traffic use the frame relay link when it is available. All other traffic may use either link.4 R3(config-rtr)#area 11 virtual-link 2. ROUTE.com has two connections to the Internet. not “show ip route”. QUESTION NO: 34 CORRECT TEXT You are a network engineer with ROUTE. If you want to check the routing information. Choose and configure the appropriate path selection feature to accomplish this task. R4(config)#ipv6 router ospf 1 R4(config-router)#no area 54 virtual-link 3.3 R4(config-router)#end After finishing the configuration doesn’t forget to ping between R1 and R4 to make sure they work.2. Make sure to remove the incorrect configuration statements to get the full points.com.info 43 . a small IT company. Note. one via a frame relay link and one via an EoMPLS link. Cisco 300-101 Exam R3#configure terminal R3(config)#ipv6 router ospf 1 R3(config-rtr)#no area 54 virtual-link 4.3.3. too.2 Save the configuration: R3(config-rtr)#end R3#copy running-config startup-config You should check the configuration of R4.4.CareerCert. No static or default routing is allowed. You may use the Test Workstation to generate HTTP traffic to validate your solution.2. www. use the show ipv6 route command.

CareerCert. www. After that configure the route map and then apply it on the interface to the server in EIGRP network.info 44 .1. 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. 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.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.100.

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

www.CareerCert.info 45

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

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

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

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. 19:80 Answer: D Explanation: First. 1:1 B.info 50 . What is the ratio of traffic over each path? A. find the IP address of the loopback0 interface on R6: www. 1:5 C.CareerCert. 6:8 D.

Cisco 300-101 Exam We see that it is 150.6.info 51 .CareerCert.1. so we issue the “show ip route 150.6” command from R1 and see this: www.6.6.1.

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

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

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

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

info 56 .CareerCert. 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. www. QUESTION NO: 38 You have been asked to evaluate how EIGRP is functioning in a customer network. Access the device consoles to answer the questions.

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

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

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

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

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

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

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

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

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

Access the device consoles to answer the questions.46. 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. which is shown as 1810944 for the 192. www.168.info 66 .CareerCert.0 route. QUESTION NO: 40 You have been asked to evaluate how EIGRP is functioning in a customer network.

info 67 .Cisco 300-101 Exam www.CareerCert.

Cisco 300-101 Exam www.info 68 .CareerCert.

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

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

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.info 71 .

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

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

Cisco 300-101 Exam www.CareerCert.info 74 .

1858 B. 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. 1569 Answer: A Explanation: Part of the “show ip ospf topology” command on R5 shows this: www.CareerCert.info 75 . 1601 C.

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.3.CareerCert. www. The customer has disabled your access to the show running- config command. Cisco 300-101 Exam The Link ID of R3 (3.info 76 .3) shows the age is 1858.3.

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

info 78 .Cisco 300-101 Exam www.CareerCert.

www.info 79 .CareerCert.40. Cisco 300-101 Exam Which of the following statements is true about the serial links that terminate in R3? A. 120 C. The R1-R3 link OSPF timer values should be 10. The R2-R3 link OSPF timer values are 30. R3 is responsible for flooding LSUs to all the routers on the network. The R1-R3 link needs the neighbor command for the adjacency to stay up B.40 D. 120.

info 80 .CareerCert. The customer has disabled your access to the show running- config command. 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. www.

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

Cisco 300-101 Exam www.info 82 .CareerCert.

info 83 .Cisco 300-101 Exam www.CareerCert.

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

www.CareerCert.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.info 86 .Cisco 300-101 Exam www.

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

info 88 .CareerCert.Cisco 300-101 Exam www.

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

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

x.x found with p2p GRE tunnels.255. 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.165.255.200. Cisco 300-101 Exam Topic 4.201.255.224 tunnel source 209. Instead the GRE tunnel is configured with the command tunnel mode gre multipoint. interface Tunnel0 bandwidth 1536 ip address 209.1 tunnel-mode dynamic D. This command is used instead of the tunnel destination x. an mGRE tunnel requires NHRP to resolve the tunnel endpoints.255.224 tunnel mode gre multipoint C.224 tunnel source 192. VPN Technologies QUESTION NO: 45 A company has just opened two remote branch offices that need to be connected to the corporate network.200.165. An mGRE interface does not have a configured destination.230 255. tunnel interfaces by default are point-to- www.x. Besides allowing for multiple destinations. interface fa 0/0 bandwidth 1536 ip address 209.231 255.200.165.255.255.165.201.255. The distinguishing feature between an mGRE interface and a p2p GRE interface is the tunnel destination.161. This means that an mGRE tunnel on the hub may connect to a p2p tunnel on the branch. interface Tunnel0 bandwidth 1536 ip address 209.255.1 tunnel-mode dynamic Answer: A Explanation: The configuration of mGRE allows a tunnel to have multiple destinations.CareerCert.168.2 tunnel destination 209.224 tunnel source Serial0/0 tunnel mode gre multipoint B.165.231 255. interface fa0/0 bandwidth 1536 ip address 209.165. Note.info 91 . a p2p GRE tunnel may connect to an mGRE tunnel.230 255.200. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites? A. Conversely.

1.2 for traffic that goes between networks 20.1 and 12.1.62.1. local addr.info 92 . The encrypted tunnel is built between 12.1. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound.1.255.1 local ident (addr/mask/prot/port): (20. effectively they have the tunnel mode gre command. invalid identity packets Answer: A.255.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/DMVPDG/DMVPN_2_ Phase2.0. This output shows an example of the show crypto ipsec sa command (bolded ones found in answers for this question).) A.C Explanation: show crypto ipsec sa This command shows IPsec SAs built between peers.0 tunnel source Serial0/0 tunnel mode gre multipoint Reference: http://www.0/255.html QUESTION NO: 46 A network engineer executes the show crypto ipsec sa command.0/0/0) current_peer: 12.255.1. 12. Authentication Header (AH) is not used since there are no AH SAs.0/255.0/0/0) remote ident (addr/mask/prot/port): (10.1.1.10 255. tagged packets E.1.2 www.cisco.1. path MTU D.255. untagged packets F.1.255. inbound crypto map B.1.B. Cisco 300-101 Exam point (p-p) using GRE encapsulation. interface: FastEthernet0 Crypto map tag: test. which is not seen in the configuration because it is the default. remaining key lifetime C.1.1. The mGRE configuration is as follows: ! interface Tunnel0 bandwidth 1536 ip address 10.1.0 and 10.1.255.1.CareerCert. Which three pieces of information are displayed in the output? (Choose three.

} #pkts encaps: 7767918. Cisco 300-101 Exam PERMIT. #pkts encrypt: 7767918. in use settings ={Tunnel.1. } slot: 0. #pkts verify 7760382 #pkts compressed: 0.1.1. 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 . #pkts digest 7767918 #pkts decaps: 7760382. remote crypto endpt.cisco. flow_id: 1443. flags={origin_is_acl. #pkts compr.: 12. 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.html QUESTION NO: 47 Refer to the following output: Router#show ip nhrp detail www. #pkts decrypt: 7760382.1. media mtu 1500 current outbound spi: 3D3 inbound esp sas: spi: 0x136A010F(325714191) transform: esp-3des esp-md5-hmac . #pkts decompress failed: 0. #Recv errors 0 local crypto endpt.: 12.info 93 . flow_id: 1444. conn id: 3442. #send errors 1.2 path mtu 1500. #pkts decompressed: 0 #pkts not compressed: 0. in use settings ={Tunnel.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike- protocols/5409-ipsec-debug-00. failed: 0. } slot: 0.1. conn id: 3443.CareerCert.

• The time in which the positive and negative authoritative NBMA address will expire (hours:minutes:seconds).255.12. Answer: A Explanation: Show NHRP: Examples The following is sample output from the show ip nhrp command: Router# show ip nhrp 10.2. B.0.255. expire 01:59:47 TypE. Tunnel0 created 0:10:03 expire 1:49:56 Type: static Flags: authoritative NBMA address: 10. • Type of interface: – dynamic—NBMA address was obtained from the NHRP Request packet. C.1111. Tunnel1 created 00:00:12. NHRP mapping is for networks that are local to this router. tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative NBMA address: 10.1111.11 10.1111.2.0.1111.255.2/8 via 10.1. Data packets are process switches for this mapping entry. D.1111.2 What does the authoritative flag mean in regards to the NHRP information? A.0.1.255 because Cisco does not support aggregation of NBMA information through NHRP.1.255.1111. This value is based on the ip nhrp holdtime command. – www.255.1111.1111. Dynamic.2 The fields in the sample display are as follows: • The IP address and its network mask in the IP-to-NBMA address cache.1 255.1. Flags: authoritative unique nat registered used NBMA address: 10. E.255.0.info 94 . The mask is always 255. • The interface type and number and how long ago it was created (hours:minutes:seconds).2 255.1.1.255.1111. Cisco 300-101 Exam 10.CareerCert.255. The NHRP mapping entry cannot be overwritten. The mapping entry was created in response to an NHRP registration request. It was obtained directly from the next-hop server.

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

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

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

all traffic to vty 0 4 from source 2001:DB8:0:4::32 B.org/wiki/Dynamic_Multipoint_Virtual_Private_Network Topic 5. tunnels between spokes can be dynamically built on demand (dynamic-mesh) without additional configuration on the hubs or spokes. 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.wikipedia. 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 all Answer: C Explanation: www. NHRP and Ipsec. GRE. Using this initial hub- and-spoke network. only ssh traffic to vty 0 4 from source all C. DMVPN is initially configured to build out a hub-and-spoke network by statically configuring the hubs (VPN headends) on the spokes. only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D. no change in the configuration on the hub is required to accept new 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. 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.info 98 . including Ipsec (Internet Protocol Security) and ISAKMP (Internet Security Association and Key Management Protocol) peers. DMVPN is combination of the following technologies: Reference: http://en.CareerCert.

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

can take advantage of forged or rapidly changing source IP addresses to allow attackers to thwart efforts to locate or filter the attacks. For Internet service providers (ISPs) that provide public access. ACL logging can be CPU intensive and can negatively affect other functions of the network device. Unfortunately. D. 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. Cisco 300-101 Exam C. its customer. including Smurf and Tribal Flood Network (TFN). router interface D. This action protects the network of the ISP.cisco.html www. source address B. Reference: http://www. A packet that matches access-list with the "log" keyword is process switched. Reference: http://www. and the rest of the Internet.com/en/US/docs/ios/12_2/security/configuration/guide/scfrpf. a number of common types of denial-of-service (DoS) attacks.CareerCert. For example. Unicast RPF deflects such attacks by forwarding only packets that have source addresses that are valid and consistent with the IP routing table.com/web/about/security/intelligence/acl-logging. 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.info 100 .cisco.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. Answer: C Explanation: ging-enabled access control lists (ACLs) provide insight into traffic as it traverses the network or is dropped by network devices. A large amount of IP traffic is being permitted on the router. destination address C.

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

168.0 — 10.0.info 102 .168. It prevents private internal addresses to be accessed directly from outside.0.0 0.255. Cisco 300-101 Exam QUESTION NO: 58 What does the following access list.31.255 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 any log router (config)#access-list 101 deny ip 192.0.0.0. 192.255 and logs any intrusion attempts. which is applied on the external interface FastEthernet 1/0 of the perimeter router.16. QUESTION NO: 59 Refer to the following command: www.0.0 — 172.0.255.0.0-10.168.16. D. C.255. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts. The log keyword also enables logging of this intrusion attempt. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet. This ACL is used to prevent all packets with a spoofed reserved private source IP address to enter the network.0.0-192.255.255.255 172.0.255 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.0.168.255.255. It prevents incoming traffic from IP address ranges 10. accomplish? Router(config)#access-list 101 deny ip 10.255.255.255.255 any log router (config)#access-list 101 deny ip 172.0- 172.255. 172.0 0.255 192.255.31.0. B.0. Answer: C Explanation: The private IP address ranges defined in RFC 1918 are as follows: 10.15.16.0 — 192.0.168.0 0.CareerCert.

The router will listen on port 4433 for HTTP traffic.20. To return the HTTPS server port number to the default. B. Answer: A Explanation: To set the secure HTTP (HTTPS) server port number for listening. router(config-if)#ip helper-address 172. The www. use the no form of this command. use the ip http secure-port command in global configuration mode. C. Which command should be applied to the configuration to allow this? A. router(config-if)#udp helper-address 172.14. and 49 to 172. D.225 69 53 49 Answer: A Explanation: To let a router forward broadcast packet the command ip helper-address can be used. The router will never accept any HTTP and HTTPS traffic.20. The router will listen on port 4433 for HTTPS traffic. Cisco 300-101 Exam router(config)# ip http secure-port 4433 Which statement is true? A. Reference: http://www. The default is 443. 53. router(config-if)#ip udp helper-address 172.info 103 .html#wp3612805529 QUESTION NO: 60 A network engineer is configuring a routed interface to forward broadcasts of UDP 69.14.14.com/en/US/docs/ios-xml/ios/https/command/nm-https-cr-cl- sh. The router will listen to HTTP and HTTP traffic on port 4433. 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.14.225 C.cisco. but the port number must be higher than 1024 unless the default is used.20. router(config-if)#ip helper-address 172.CareerCert.20.14.20.225 D.225 B.225.

ip helper-address {ip address} When configuring the ip helper-address command.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. the engineer is not concerned with authentication or encryption. 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. Which command satisfies the requirements of this scenario? A. It’s simple to configure on both the router/switch-side and just as easy on the network monitoring server.CareerCert.16.28 traps version 2c CISCORO B. router(config)#snmp-server host 172. The problem of course is that the SNMP statistical payload is not encrypted and authentication is passed in cleartext. Most companies have decided that the information being transmitted isn’t valuable enough to be worth the extra effort in upgrading to SNMPv3.28 informs version 2c CISCORO C. However.html Topic 6.info 104 .cisco-faq. Infrastructure Services QUESTION NO: 61 A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications.16.201. router(config)#snmp-server host 172. www.201. but I would suggest otherwise. router(config)#snmp-server host 172.com/163/forward_udp_broadcas.201. Cisco 300-101 Exam broadcasts will be forwarded to the unicast address which is specified with the ip helper command.28 traps version 3 auth CISCORO D.201. router(config)#snmp-server host 172.16.16.

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

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

It enables receiving NTP broadcasts on the interface where the command was executed.info 107 .html QUESTION NO: 65 A network engineer is trying to implement broadcast-based NTP in a network and executes the ntp broadcast client command. what is the result of the command? A.com/en/US/docs/internetworking/troubleshooting/guide/tr19aa. Assuming that an NTP server is already set up. Answer: A Explanation: The NTP service can be activated by entering any ntp command. 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.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. It enables receiving NTP broadcasts on all interfaces globally. When you use the ntp broadcast client command. C.cisco.html QUESTION NO: 66 What is a function of NPTv6? www. B. D. Reference: http://www. It enables a device to be an NTP peer to another device.CareerCert.cisco. 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. It enables a device to receive NTP broadcast and unicast packets.

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

Which type of statistics does the engineer see? A.info 109 . the control protocol is disabled on the source (Device B).html QUESTION NO: 69 A network engineer executes the “ipv6 flowset” command.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. The operation is scheduled to start immediately.1).0. www.0.wikipedia. This action allows the responder to reply to the TCP Connect operation.CareerCert.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt- book/sla_tcp_conn. because the target is not a Cisco device and a well-known TCP port is used. In this example.1 port 23 Reference: http://www. 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. as shown in the “TCP Connect Operation” figure in the “Information About the IP SLAs TCP Connect Operation” section.cisco. In this example. Device A (target device) Configuration configure terminal ip sla responder tcp-connect ipaddress 10.0. connection-oriented D.0. service-oriented C. What is the result? A. Cisco 300-101 Exam Reference: http://en. Flow-label marking in 1280-byte or larger packets is enabled. IP SLAs uses the control protocol to notify the IP SLAs responder to enable the target port temporarily. connectionless-oriented B. there is no need to send the control message.

Ipv6 PMTU is enabled on the router. SUMMARY STEPS 1. Ipv6 flow control is enabled on the router. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. enable 2. Step 3 ipv6 flowset www.info 110 . 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. C. configure terminal 3. exit 5. Cisco 300-101 Exam B. Flow-set marking in 1280-byte or larger packets is enabled. clear ipv6 mtu DETAILED STEPS Command or Action Purpose Step 1 enable Example: Device> enable Enables privileged EXEC mode.CareerCert. D. ipv6 flowset 4.

1. Version 5 flow records Specifies the version of the flow. and the total number of flows contained within them. Which line in the output indicates that the send queue is full and export packets are not being sent? A. 11 flows exported in 8 udp datagrams The total number of export packets sent. Cisco 300-101 Exam Example: Device(config)# ipv6 flowset Configures flow-label marking in 1280-byte or larger packets sent by the device.info 111 . Reference: http://www.cisco. adjacency issues Answer: A Explanation: Table 5 show ip flow export Field Descriptions Field Description Exporting flows to 10.html QUESTION NO: 70 A network engineer executes the show ip flow export command.1.2. 0 export packets were sent up to process level www.3. 0 flows failed due to lack of export packet No memory was available to create an export packet. enqueuing for the RP C. The ports are in parentheses.com/c/en/us/td/docs/ios-xml/ios/ipv6_basic/configuration/15-mt/ip6b- 15-mt-book/ip6-mtu-path-disc.1 Specifies the export destinations and ports.1. output drops B.1 Specifies the source address or interface.1. Exporting using source IP address 10.1 (1000) and 10.CareerCert. fragmentation failures D.

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.com/c/en/us/td/docs/ios/12_0s/feature/guide/oaggnf.info 112 .1 255.html QUESTION NO: 71 A network engineer is asked to configure a “site-to-site” Ipsec VPN tunnel.255. 0 export packets were dropped due to output drops Indicates that the send queue was full while the packet was being transmitted. Which functions do the two commands serve in this scenario? A. 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.cisco. Reference: http://www.10.10. 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 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. Cisco 300-101 Exam The packet could not be processed by CEF or by fast switching. B.CareerCert. 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. 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.255. Answer: D Explanation: Configuring NAT to Allow Internal Users to Access the Internet Using Overloading NAT Router interface 116thernet 0 ip address 10. 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. The command access-list 1 permit any defines only one machine that is allowed through the tunnel.0 www. D. C.

31 www.Defines Ethernet 1 with an IP address and as a NAT inside interface.are permitted by access-list 7 has the source address !--.10.1 prefix 24 ! !--.20.255.Translations are overloaded.10.address.10.0 ip nat outside !--.0.20. Interface serial 0 ip address 172.10. Ip nat pool ovrld 172.1 172. Access-list 7 permit 10.10.Defines Ethernet 0 with an IP address and as a NAT inside interface.16.0 0.1. ip nat inside source list 7 pool ovrld overload ! ! ! ! !--. Cisco 300-101 Exam ip nat inside !--. !--.CareerCert.Defines a NAT pool named ovrld with a range of a single IP !--.info 113 .16.10. which allows multiple inside !--. Interface 116thernet 1 ip address 10.0 0.16.Indicates that any packets received on the inside interface that !--.255.0.10.64 255.10.0.devices to be translated to the same valid IP address.255.1 255.31 access-list 7 permit 10.0 ip nat inside !--. 172.16.255.0.Defines serial 0 with an IP address and as a NAT outside interface.translated to an address out of the NAT pool named ovrld.

10.10. B.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.31 and 10.10. Note in the previous second configuration.31. 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.html www.20. Disable and enable all active interfaces on the active HSRP node. as an alternative to powering down the active router and letting the network respond accordingly. the HSRP priority is reduced.10. Cisco 300-101 Exam !--.0 through 10.10. Reference: http://www. Adjust the HSRP priority without the use of preemption. 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.com/c/en/us/support/docs/ip/hot-standby-router-protocol-hsrp/13780- 6. This means that another HSRP router with higher priority can become the active router if that router has standby preempt enabled.info 114 . which allows for maintenance mode. If the line protocol of the specified interface goes down. 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.10.cisco.CareerCert.Access-list 7 permits packets with source addresses ranging from !--. the NAT pool “ovrld”only has a range of one address. Which action will allow for manual switching of HSRP nodes? A.0 through 10. Loopback interfaces can be tracked. C. Track the up/down state of a loopback interface and shut down this interface during maintenance. Enable HSRPv2 under global configuration.10. D.shtml QUESTION NO: 72 A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows. Reference: http://www.cisco.20.

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

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

status and statistics of the specified flow monitor D. NAT44 www.com/en/US/docs/ios-xml/ios/fnetflow/configuration/15-mt/cfg-de- fnflow-exprts.info 117 . configuration of the specified flow exporter B.html QUESTION NO: 76 A company’s corporate policy has been updated to require that stateless.cisco. current status of the specified flow exporter C. NAT64 B. 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. and Ipv6 to Ipv6 translations at the Internet edge are performed.CareerCert. 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. 1-to-1. What is the best solution to ensure compliance with this new policy? A.

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

com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6- solution/white_paper_c11-676277. DHCPv6. 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. there are important differences. stateful C.info 119 .cisco.B Explanation: While stateful and stateless NAT64 perform the task of translating IPv4 packets into IPv6 packets and vice versa.html www. manual D.) A. dynamic Answer: A. automatic E. Cisco 300-101 Exam QUESTION NO: 78 Which two methods of deployment can you use when implementing NAT64? (Choose two. stateless B. static F. Manual. SLAAC Reference: http://www. functional G. Table 2. The following table provides a high-level overview of the most relevant differences. 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.CareerCert.

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

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

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

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

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

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

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

Dual stack translates IPv4 addresses to IPv6 addresses. by dropping the packet C.CareerCert. by creating a new FIB entry for the packet D. Dual stack changes the IP addresses on hosts from IPv4 to IPv6 automatically. PAP Answer: D Explanation: QUESTION NO: 100 A router receives a routing advertisement for the same prefix and subnet from four different routing www. Answer: B Explanation: QUESTION NO: 99 Which PPP authentication method sends authentication information in cleartext? A. Dual stack means that devices are able to run IPv4 and IPv6 in parallel. CHAP D. Dual stack translates IPv6 addresses to IPv4 addresses. CDPCP C. B.info 129 . MS CHAP B. 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 forwarding the packet B. 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. D.

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

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

GREVPN Answer: B Explanation: QUESTION NO: 106 Which parameter in an SNMPv3 configuration offers authentication and encryption? A. secret Answer: C Explanation: QUESTION NO: 107 Refer to the following configuration command. The router acts as an authoritative NTP clock at stratum 10. The router acts as an authoritative NTP clock and allows only 10 NTP client connections. 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. router (config-line)# ntp master 10 Which statement about this command is true? A. priv D. B. GETVPN D. auth B.CareerCert. Cisco Easy VPN C.info 132 . DMVPN B.

CareerCert.255. D.1. Answer: B Explanation: QUESTION NO: 108 Refer to the exhibit.16.255.1.1 255. The router acts as an authoritative NTP clock with a priority number of 10.1.0 10.1 255.info 133 . Consider the following output: hostname RouterB ! interface fastethernet 0/0 ip address 172.255.1.252 ! ip route 172.2 www.1. The DHCP client is unable to receive a DHCP address from the DHCP server.16. RouterB(config-if)# ip helper-address 172. Cisco 300-101 Exam C. The router acts as an authoritative NTP clock for 10 minutes only.255.1.1.255.0 255.0 interface serial 0/0 ip address 10.255.2 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.31.

1 D. C.31. When tracking state. any other return code means that the track's state is up. any other return code means that the track's state is down. an OK or over threshold return code means that the track's state is up. any other return code means that the track's state is up.255 Answer: A Explanation: QUESTION NO: 109 Which statement about the NPTv6 protocol is true? A. Which statement about state tracking is true? A.255. B. RouterB(config-if)# ip helper-address 172. RouterB(config-if)# ip helper-address 255.1.CareerCert. Which statement about the configuration is true? www. Cisco 300-101 Exam B. When tracking state. an OK return code means that the track's state is up. Answer: B Explanation: QUESTION NO: 110 Two aspects of an IP SLA operation can be tracked: state and reachability.1. RouterB(config-if)# ip helper-address 172. D. Answer: A Explanation: QUESTION NO: 111 Refer to the exhibit. D. When tracking state.255. It is used to translate an IPv6 address prefix to another IPv6 prefix. an OK return code means that the track's state is down. C. When tracking state.16. It is used to translate IPv6 prefixes to IPv4 subnets with appropriate masks. It is used to translate IPv4 addresses to IPv6 link-local addresses. B.1 C.info 134 . an OK or over threshold return code means that the track's state is down. any other return code means that the track's state is down. It is used to translate IPv4 prefixes to IPv6 prefixes.

The router exports flow information to 10.10. Answer: A Explanation: QUESTION NO: 112 Refer to the exhibit. www. 20 packets are being sent every 30 seconds. The packets that are being sent use DSCP EF. D. The monitor starts at 12:05:00 a. Jitter is being tested with TCP packets to port 65051.CareerCert. B. C. Cisco 300-101 Exam A. Which statement about the command output is true? A.1 on UDP port 5127.10.m.info 135 .

CareerCert. Clear the IP NAT translations using the clear ip nat table * " command.info 136 . cannot destroy What is the least impactful method that the engineer can use to modify the existing IP NAT configuration? A. then replace the NAT configuration quickly. 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. then replace the NAT configuration quickly.255.1 on TCP port 5127.10. The router exports flow information to 10. Cisco 300-101 Exam B. B. Clear the IP NAT translations using the clear ip nat translation * " command.1.10.2 on TCP port 5127. before any new NAT entries are populated into the translation table due to active NAT traffic.254 netmask 255. C. The router receives flow information from 10. Answer: B Explanation: QUESTION NO: 114 www.1. before any new NAT entries are populated into the translation table due to active NAT traffic.1. the following message is seen on the console: %Dynamic Mapping in Use.255. then replace the NAT configuration quickly.10. before any new NAT entries are populated into the translation table due to active NAT traffic. The router receives flow information from 10. before any new NAT entries are populated into the translation table due to active NAT traffic.2 on UDP port 5127. D. Cannot remove message or the %Pool outpool in use.10.10.10. D.0 Upon entering the command on the IOS router. Clear the IP NAT translations using the reload command on the router. C. Clear the IP NAT translations using the clear ip nat traffic * " command.1. then replace the NAT configuration quickly.20 192.

000 bytes E. multicast Answer: A Explanation: QUESTION NO: 115 Which three items can you track when you use two time stamps with IP SLAs? (Choose three.CareerCert. path Answer: A. 32.B. jitter C.000 bytes C. throughput F. delay B.C Explanation: QUESTION NO: 116 If the total bandwidth is 64 kbps and the RTT is 3 seconds. packet loss D.) A. anycast E. 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. global C. 16.000 bytes D.000 bytes Answer: C Explanation: www. 24.000 bytes B. what is the bandwidth delay product? A. 8. load E.info 137 . link-local B. 62. site-local D.

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

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

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

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. GRE VPN D. IPsec VPN C. D.info 141 . Which technology must be configured to prevent remote sites from getting overwhelmed with traffic and prevent packet drops from the headquarters? A. traffic shaping B.CareerCert. B. 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. This configuration is missing an IP address on the dialer interface. Cisco 300-101 Exam Which statement about the configuration is true? A. This configuration is incorrect because the dialer interface number must be the same as the dialer pool number. C. MPLS Answer: A Explanation: QUESTION NO: 127 www.

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

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 . Cisco 300-101 Exam Which option prevents routing updates from being sent to the access layer switches? A. 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. www.CareerCert. ALS1(config-router)# passive-interface default ALS2(config-router)# passive-interface default C. DWS1(config-router)# passive-interface default DWS2(config-router)# passive-interface default B.

while still allowing routing update messages to flow to the Internet router and the distribution switches? A. 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 allows a maximum of four paths across for load balancing traffic. 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. 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. C. EIGRP performs equal cost load balancing at least across four equal cost paths. Cisco 300-101 Exam Which option prevents routing updates from being sent to the DHCP router. EIGRP unequal path load balancing can result in routing loops. www. By default. 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.info 144 . B. By default. EIGRP uses a default variance of 2 for load balancing.CareerCert. D. Which consideration should be analyzed? A.

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

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

0. while also limiting spoofed 10.16. Answer: B.D Explanation: QUESTION NO: 138 Which option is invalid when configuring Unicast Reverse Path Forwarding? A.0.CareerCert.info 147 . Which option represents the minimal configuration that allows inbound traffic from the 172. source reachable via both Answer: D Explanation: QUESTION NO: 139 Refer to the exhibit. Neither RADIUS nor TACACS+ allow for accounting of commands.0/24 network to successfully enter router R.0/8 hosts that could enter router R? A. allow based on ACL match D. Cisco 300-101 Exam E. allow self ping to router B. (config)#ip cef (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via rx allow-default B.1. allow default route C. (config)#ip cef (config)#interface fa0/0 www.

The client creates a VPN tunnel to an NTP server.1 eq 80 any permit ip any any B. applied to the WAN interface of a router. B. The client multicasts NTP requests. ip access-list extended 200 deny tcp host 10. The client polls NTP servers for time. (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via any Answer: A Explanation: QUESTION NO: 140 Which outbound access list.) A. Answer: A.10. ip access-list extended 10 deny tcp host 10.10.10. E.10. ip access-list extended 100 deny tcp host 10. permits all traffic except for http traffic sourced from the workstation with IP address 10.1 any eq 80 permit ip any any C.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.1? A.10. The client broadcasts NTP requests. (config)#no ip cef (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via rx D. Cisco 300-101 Exam (config-if)#ip verify unicast source reachable-via rx C. D. C.CareerCert.10.info 148 .10.10.C www. ip access-list extended NO_HTTP deny tcp host 10.10.10.1 any eq 80 D. The client listens to NTP broadcasts.

201. Which command allows hosts that are connected to FastEthernet0/2 to access the Internet? A.info 149 .165.0 overload C.1 to connect to a web server at www.1.CareerCert.201.225 10. Cisco 300-101 Exam Explanation: QUESTION NO: 142 Refer to the exhibit. B.165.165. It allows host 192. ip nat inside source list 10 interface FastEthernet0/1 overload B. 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 192.50 80 209.1.200.10. It allows external clients coming from public IP 209. ip nat outside source static 209.1 8080 extendable A.50 to access external websites using TCP port 8080.10.168. ip nat inside source list 10 interface FastEthernet0/2 overload D.168.

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

info 153 . 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.CareerCert. www.

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

www.CareerCert. 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.info 155 .

router(config-ip-sla-echo)#timeout 3 www.CareerCert. router(config-ip-sla)#icmp-echo 172.201.) A.16.info 156 .16.201. Cisco 300-101 Exam Answer: Explanation: QUESTION NO: 149 An engineer is asked to monitor the availability of the next-hop IP address of 172.25 source-interface FastEthernet 0/0 B.25 every 3 seconds using an ICMP echo packet via an ICMP echo probe. Which two commands accomplish this task? (Choose two.

D www.25 interval 100 D.info 157 .16. router(config-ip-sla)#icmp-jitter 172.CareerCert.201.25 source-port 23 F. router(config-ip-sla)#udp-echo 172. router(config-ip-sla-echo)#frequency 3 E.16. router(config-ip-sla-echo)#threshold 3 Answer: A. Cisco 300-101 Exam C.201.

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