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CCNP ROUTE 300-101

(v9.0 - 149 Q&A)

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Cisco 300-101 Exam
Topic 1, Network Principles

QUESTION NO: 1

Refer to the exhibit.

Based on this FIB table, which statement is correct?

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

Answer: C
Explanation:

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

QUESTION NO: 2

Refer to the exhibit.

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

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

Answer: A
Explanation:

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

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

QUESTION NO: 3

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

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

Answer: A
Explanation:

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

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

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

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

Fast switchin www.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.2.html QUESTION NO: 8 Which switching method is used when entries are present in the output of the command show ip cache? A. The vrf-name can be any case-sensitive. • route—An individual IP route. Destination addresses are stored in the high-speed cache to expedite forwarding. • next-hop—The next-hop address • interface—The interface to reach the next-hop address.CareerCert. fast switching B.2. • prefix/length—Any IP prefix. The route options are as follows: • *—All routes. Cisco 300-101 Exam Example: switch(config)# clear ip route 10. Routers offer better packet-transfer performance when fast switching is enabled.2 Clears one or more routes from both the unicast RIB and all the module FIBs. Reference: http://www. 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. 7 . alphanumeric string up to 32 characters.cisco. Cisco Express Forwarding switching D. process switching C.info ast switching.

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

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

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

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

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

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

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

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

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

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

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

The IPv6 EUI-64 format address is obtained through the 48-bit MAC address.CareerCert. www. If 0. 2001:DB8:0:1:C601:42FF:FE0F:7 B. allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). the address is globally unique.info 21 . Here is an example showing how the Mac Address is used to generate EUI. Therefore. it maintains its original scope (global unique address is still global unique and vice versa). It is worth noticing that in the OUI portion. Next. the seventh bit from the left. as per RFC2373. the address is locally administered and if 1.5. with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. 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. when the bit is inverted. Cisco 300-101 Exam Which IPv6 addresses should the engineer add to the documentation? A. the globally unique addresses assigned by the IEEE has always been set to 0 whereas the locally created addresses has 1 configured. The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. or the universal/local (U/L) bit.1. 2001:DB8:0:1:C601:42FE:800F:7 Answer: A Explanation: Extended Unique Identifier (EUI). 2001:DB8:0:1:FE80:C601:420F:7 D. needs to be inverted. 2001:DB8:0:1:FFFF:C601:420F:7 C. The Mac address is first separated into two 24-bits. This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. This bit identifies whether this interface identifier is universally or locally administered.

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

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

2.0/24 network out of FastEthernet 0/0? A.” www. distribute list 2 out FastEthernet0/0 Answer: D Explanation: Access list 2 is more specific.0/24.0.html QUESTION NO: 26 Refer to the exhibit.0/8 networks. allowing only 1. Which command only announces the 1. Cisco 300-101 Exam Broadcast 10 40 Non-Broadcast 30 120 Reference: http://www.0. whereas access list 1 permits all 1. distribute list 1 out FastEthernet0/0 C.3. so the correct command is “distribute list 2 out FastEthernet0/0.cisco. distribute list 1 out B. distribute list 2 out D.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13693- 22.info 24 .CareerCert.3.2. This question also asks us to apply this distribute list only to the outbound direction of the fast Ethernet 0/0 interface.

0/16 ge 24 le 24? A.0/24 C.0. so only a /24 is both greater than or equal to 24 and less than or equal to 24. C.24 matches this. 10.0. IPv6 unicast routing is not enabled on Router A or Router B. 10.8.1. Only the choice of 10.info 25 .8.8.0. 10. Cisco 300-101 Exam QUESTION NO: 27 Which prefix is matched by the command ip prefix-list name permit 10. where X is any value in the 0-255 range. the ge 24 term means greater than or equal to a /24 and the le 24 means less than or equal to /24.0.0/16 D.0/24 network. truncated www. OSPFv3 timers were adjusted for fast convergence. 10. The networks were not advertised properly under the OSPFv3 process. QUESTION NO: 28 Router A and Router B are configured with IPv6 addressing and basic routing capabilities using oSPFv3. After debugging IPv6 packets. The networks that are advertised from Router A do not show up in Router B's routing table.8.0. An IPv6 traffic filter is blocking the networks from being learned via the Router B interface that is connected to Router A.x.CareerCert.0/23 Answer: B Explanation: With prefix lists. Answer: D Explanation: show ipv6 traffic Field Descriptions Field Description source-routed Number of source-routed packets. B. This translates to any prefix in the 10.8. D.8.9.0/24 B. the message "not a router" is found in the output.0. Why is the routing information not being learned by Router B? A.

This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4.cisco. The addresses were misconfigured and will not function as intended. as per RFC2373. Based on this information. Cisco 300-101 Exam Number of truncated packets. E. B. IPv6 addresses containing "FFFE" indicate that the address is reserved for multicast. but IPv6 Cisco Express Forwarding was disabled. with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. D.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. The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. Reference: http://www. the version number. Here is an example showing how the Mac Address is used to generate EUI. format errors Errors that can result from checks performed on header fields.com/c/en/us/td/docs/ios/ipv6/command/reference/ipv6_book/ipv6_16.info 26 . C. IPv6 unicast forwarding was enabled. Answer: A Explanation: Extended Unique Identifier (EUI). IEEE EUI-64 was implemented when assigning IPv6 addresses on the device. The Mac address is first separated into two 24-bits. what do you conclude about these IPv6 addresses? A. you see that several IPv6 addresses have the 16-bit hexadecimal value of "fFFE" inserted into the address. www. The IPv6 EUI-64 format address is obtained through the 48-bit MAC address.CareerCert. IEEE has chosen FFFE as a reserved value which can only appear in EUI-64 generated from the EUI-48 MAC address. and packet length. The IPv6 universal/local flag (bit 7) was flipped. allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identify them EUI-64).

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

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

com is a small IT corporation that is attempting to implement the network shown in the exhibit.5/30 — Link between Seattle and Chicago Secret Password: cisco Chicago S0/0 192.168.168.10/30 — Link between Chicago and NewYork www. You have been asked to complete the implementation to allow this ping.168. they cannot ping from the serial interface of the Seattle router to the loopback interface of the NewYork router.168.html QUESTION NO: 31 CORRECT TEXT Route.CareerCert.com’s corporate implementation guidelines require: • The OSPF process ID for all routers must be 10. However. •OSPF area 21 must not receive any inter-area or external routes.info 29 .9/30 — Link between Chicago and NewYork S0/1 192. The SO/0 interface on Chicago and the SO/1 interface on NewYork are in Area 0. Cisco 300-101 Exam Reference: http://www.6/30 — Link between Seattle and Chicago Secre Password: cisco NewYork S0/1 192.54. The loopback0 interface on NewYork is in Area 1.com/c/en/us/td/docs/ios/ipv6/configuration/guide/12_4t/ipv6_12_4t_book/ip6- addrg_bsc_con. Currently the implementation is partially completed.16. •The serial link between Seattle and Chicago must be in OSPF area 21. • The routing protocol for each interface must be enabled under the routing process.16. • The routing protocol must be enabled for each interface using the most specific wildcard mask possible.54. OSPF has been configured on routers Chicago and NewYork. Network Information Seattle S0/0 192.cisco. ROUTE.

Cisco 300-101 Exam Loopback0 172.info 30 .16.CareerCert.189.189 Secret Password: cisco www.

we need to find the network address and wildcard mask of 192. and router hostnames may change.5/30. but the overall solution is the same.168. www.5/30 in order to configure the OSPF.16. Seattle’s S0/0 IP Address is 192. Cisco 300-101 Exam Answer: Here is the solution below: Explanation: Note: In actual exam. OSPF areas and process ID. the IP addressing.16.168.CareerCert. So.info 31 .

256-252 = 4.5) belongs to subnet 1 (4 to 7).168.168.16. find the 4th octet of the Network Address: The 4th octet of IP address (192. Cisco 300-101 Exam IP Address: 192.168.168. Subnet Mask: (Network Bits – 1’s. hence the subnets will increment by 4.16. Network Address: 192.4 Broadcast Address: 192.252 Here subtract 252 from 2565.CareerCert. First.7 Let’s find the wildcard mask of /30.5 /30 Subnet Mask: 255. 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.255.16.255.16.info 32 .

3 area 21 Again.0.16. Cisco 300-101 Exam in real exam). 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.0.CareerCert. www. In order to accomplish this. Therefore we want to configure area 21 as a totally stubby area.4 0.16. And if we don’t want to send inter-area routes.info 33 . Seattle>enable Password: Seattle#conf t Seattle(config)#router ospf 10 Seattle(config-router)#network 192. we have to stop LSA Type 3 and Type 4.4 0.0.168.168. we must stop LSA Type 5 if we don’t want to send external routes.3 area 21 One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route).0. 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. as well as the New York router so there is nothing that needs to be done on that router. area 21 should not receive any external or inter-area routes (except the default route).

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

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

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

0 network. Notice that the eigrp stub command equals to the eigrp stub connected summary because the connected and summary options are enabled by default.0/24.2. the s0/0 interface of R4.0. In the output if we don’t see the summary line (like 10.0.0.0.info 37 .0.0 www.0 255. 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. which is a directly connected network of R3.0. Next we will configure router R3 so that it has only 2 subnets of 10.0 at the interface s0/0 of R4 to summary.2. we will use the ip summary-address eigrp 123 10.CareerCert. We can’t get rid of it in the routing table no matter what technique we use to summary the networks.255. R4> enable R4# conf t R4(config)# interface s0/0 R4(config-if)# ip summary-address eigrp 123 10.0 255.255.0. In conclusion. There is one interesting thing about the output of the show ip route shown above: the 10.0. Therefore.255.0.2.2.0 so that all the ping can work well.3. 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.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.0.0 255. to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet.

0 you will leave a /16 network in the output of the show ip route command.info 38 .0. This summarization is better because all the pings can work well. Just for your information. notice that if you use another network than 10. Cisco 300-101 Exam Now we jump back to R3 and use the show ip route command to verify the effect.2.0.0. if you don’t see the line “10. Null0” then you can summarize using the network 10. R3(config-if)# end www.0/8 to summary. for example.0. if you use the command ip summary-address eigrp 123 10.255.0/8 is a summary.0. But in your real exam.0.0 255.0/16.2.0. 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. Finally don’t forget to use the copy run start command on routers R3 and R4 to save the configurations.CareerCert.

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

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

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

3. the area 11 will become the transit area.4.4.CareerCert. 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. not R2’s router-id 2.3.4”): R3>enable www. routers R2 and R3 must be configured with the area <area id> virtual- link <neighbor router-id>command. Therefore.3. In this case. The area through which you configure the virtual link is known as a transit area.2) + Configure virtual link on R3 (from the second output above.3. In some cases. 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 3.3 Save the configuration: R2(config-rtr)#end R2#copy running-config startup-config (Notice that we have to use neighbor router-id 3.info 42 . we can use a virtual link to connect to the backbone through a non-backbone area.2. where this is not possible. 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). + Configure virtual link on R2 (from the first output above.2.3.

All other traffic may use either link. QUESTION NO: 34 CORRECT TEXT You are a network engineer with ROUTE.3 R4(config-router)#end After finishing the configuration doesn’t forget to ping between R1 and R4 to make sure they work. one via a frame relay link and one via an EoMPLS link.3. too. a small IT company. www. R4(config)#ipv6 router ospf 1 R4(config-router)#no area 54 virtual-link 3.2 Save the configuration: R3(config-rtr)#end R3#copy running-config startup-config You should check the configuration of R4.2. No static or default routing is allowed.3. You may use the Test Workstation to generate HTTP traffic to validate your solution.2. Cisco 300-101 Exam R3#configure terminal R3(config)#ipv6 router ospf 1 R3(config-rtr)#no area 54 virtual-link 4. IT policy requires that all outbound HTTP traffic use the frame relay link when it is available.info 43 . ROUTE.CareerCert. If you want to check the routing information. Choose and configure the appropriate path selection feature to accomplish this task. not “show ip route”. Make sure to remove the incorrect configuration statements to get the full points.4 R3(config-rtr)#area 11 virtual-link 2.com has two connections to the Internet.com.4.4. use the show ipv6 route command. Note.

After that configure the route map and then apply it on the interface to the server in EIGRP network.100. 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.info 44 . Here are the step by Step Solution for this: First create the access list that catches the HTTP traffic: R1(config)#access-list 101 permit tcp any any eq www 2) Configure the route map that sets the next hop address to be ISP1 and permits the rest of the traffic: R1(config)#route-map pbr permit 10 R1(config-route-map)#match ip address 101 R1(config-route-map)#set ip next-hop 10.1. www.CareerCert.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.

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

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

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

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

1. so we issue the “show ip route 150.info 51 .6.1.CareerCert.6.6. Cisco 300-101 Exam We see that it is 150.6” command from R1 and see this: www.

Access the device consoles to answer the questions. www.CareerCert.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.

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

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

Distribute-list using a prefix-list C. An ACL using a distance of 255 www. Distribute-list using a route-map D. Cisco 300-101 Exam What type of route filtering is occurring on R6? A.info 55 . Distribute-list using an ACL B.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.CareerCert. QUESTION NO: 38 You have been asked to evaluate how EIGRP is functioning in a customer network. www. Access the device consoles to answer the questions.info 56 .

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

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

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

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

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

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

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

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

Cisco 300-101 Exam What is the advertised distance for the 192.0 network on R1? A.CareerCert. 333056 B.info 65 . 1938688 C.46. 1810944 D.168. 307456 Answer: C Explanation: R1’s routing table is as follows www.

www. QUESTION NO: 40 You have been asked to evaluate how EIGRP is functioning in a customer network.168. which is shown as 1810944 for the 192.46.CareerCert. 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.info 66 . Access the device consoles to answer the questions.0 route.

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

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20 C. 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.info 70 . 30 D.CareerCert. 10 B.

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

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

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

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1858 B. 1601 C. 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.CareerCert.info 75 . 600 D. 1569 Answer: A Explanation: Part of the “show ip ospf topology” command on R5 shows this: www.

Cisco 300-101 Exam The Link ID of R3 (3.CareerCert.info 76 . www. 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.3.3.3) shows the age is 1858. The customer has disabled your access to the show running- config command.

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

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

Cisco 300-101 Exam Which of the following statements is true about the serial links that terminate in R3? A.info 79 . www. The R2-R3 link OSPF timer values are 30. 120.40. 120 C.CareerCert. The R1-R3 link needs the neighbor command for the adjacency to stay up B.40 D. The R1-R3 link OSPF timer values should be 10. R3 is responsible for flooding LSUs to all the routers on the network.

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

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

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

The customer has disabled your access to the show running- config command.info 85 .CareerCert. 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. www.

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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.CareerCert. 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. Only R6's loopback is present in R5's Routing table E. Inspect their routing tables and determine which statement is true? A. R5's Loopback and R6's Loopback are both present in R5's Routing table B.info 89 .

6. Cisco 300-101 Exam Here we see R5’s loopbacks in the routing table shown as connected. www.6.info 90 .CareerCert. and the 6.6 loopback IP address of R6 is also seen as an OSPF route in R5’s routing table.

1 tunnel-mode dynamic D. interface fa 0/0 bandwidth 1536 ip address 209.CareerCert. VPN Technologies QUESTION NO: 45 A company has just opened two remote branch offices that need to be connected to the corporate network. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites? A.201. 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.224 tunnel source 209. an mGRE tunnel requires NHRP to resolve the tunnel endpoints.165. tunnel interfaces by default are point-to- www.x found with p2p GRE tunnels. This means that an mGRE tunnel on the hub may connect to a p2p tunnel on the branch.200.165.231 255.255.255.224 tunnel mode gre multipoint C.info 91 . Besides allowing for multiple destinations.168.200. Instead the GRE tunnel is configured with the command tunnel mode gre multipoint.200.230 255. The distinguishing feature between an mGRE interface and a p2p GRE interface is the tunnel destination. An mGRE interface does not have a configured destination.200. This command is used instead of the tunnel destination x.231 255.255.255.165. interface Tunnel0 bandwidth 1536 ip address 209.165. Note.161.201.165. Cisco 300-101 Exam Topic 4.224 tunnel source Serial0/0 tunnel mode gre multipoint B.2 tunnel destination 209.1 tunnel-mode dynamic Answer: A Explanation: The configuration of mGRE allows a tunnel to have multiple destinations.255. interface fa0/0 bandwidth 1536 ip address 209.255.x. a p2p GRE tunnel may connect to an mGRE tunnel. Conversely. interface Tunnel0 bandwidth 1536 ip address 209.255.x.165.224 tunnel source 192.255.230 255.

The encrypted tunnel is built between 12. path MTU D.2 www.0/255.1. untagged packets F.255.1.1.255.1.1.62.) A.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/DMVPDG/DMVPN_2_ Phase2.1.1. Which three pieces of information are displayed in the output? (Choose three. inbound crypto map B.0.2 for traffic that goes between networks 20.1.10 255.1.255. 12. The mGRE configuration is as follows: ! interface Tunnel0 bandwidth 1536 ip address 10.1. local addr. remaining key lifetime C.1.C Explanation: show crypto ipsec sa This command shows IPsec SAs built between peers.1. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound.CareerCert. This output shows an example of the show crypto ipsec sa command (bolded ones found in answers for this question).0/0/0) current_peer: 12.1.cisco.255. interface: FastEthernet0 Crypto map tag: test.1.0/0/0) remote ident (addr/mask/prot/port): (10. Authentication Header (AH) is not used since there are no AH SAs. which is not seen in the configuration because it is the default. invalid identity packets Answer: A.1.0/255.1.html QUESTION NO: 46 A network engineer executes the show crypto ipsec sa command.1 and 12.1 local ident (addr/mask/prot/port): (20.0 tunnel source Serial0/0 tunnel mode gre multipoint Reference: http://www. tagged packets E. Cisco 300-101 Exam point (p-p) using GRE encapsulation.0 and 10.255.1.B.255. effectively they have the tunnel mode gre command.info 92 .

#pkts encrypt: 7767918. in use settings ={Tunnel. #pkts decompress failed: 0.} #pkts encaps: 7767918.1. } slot: 0.: 12. flags={origin_is_acl.2 path mtu 1500. conn id: 3443. #pkts decompressed: 0 #pkts not compressed: 0.cisco. media mtu 1500 current outbound spi: 3D3 inbound esp sas: spi: 0x136A010F(325714191) transform: esp-3des esp-md5-hmac . 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 .: 12.CareerCert. remote crypto endpt. #pkts digest 7767918 #pkts decaps: 7760382. #pkts compr.1. flow_id: 1444. crypto map: test sa timing: remaining key lifetime (k/sec): (4608000/52) IV size: 8 bytes replay detection support: Y outbound ah sas: outbound pcp sas: Reference: http://www. #Recv errors 0 local crypto endpt.1.info 93 . #pkts verify 7760382 #pkts compressed: 0.1. } slot: 0.1. #pkts decrypt: 7760382. flow_id: 1443. conn id: 3442.html QUESTION NO: 47 Refer to the following output: Router#show ip nhrp detail www.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike- protocols/5409-ipsec-debug-00. #send errors 1. in use settings ={Tunnel. failed: 0. Cisco 300-101 Exam PERMIT.

1111. The NHRP mapping entry cannot be overwritten.11 10.0.255. Data packets are process switches for this mapping entry. – www.1. E.0. NHRP mapping is for networks that are local to this router.1.1111.2 What does the authoritative flag mean in regards to the NHRP information? A.1111.2 The fields in the sample display are as follows: • The IP address and its network mask in the IP-to-NBMA address cache. expire 01:59:47 TypE. The mapping entry was created in response to an NHRP registration request.2.1 255. It was obtained directly from the next-hop server.2. This value is based on the ip nhrp holdtime command.12.255 because Cisco does not support aggregation of NBMA information through NHRP. • Type of interface: – dynamic—NBMA address was obtained from the NHRP Request packet.info 94 .1111.CareerCert.1.255.1.1111.255.255. • The time in which the positive and negative authoritative NBMA address will expire (hours:minutes:seconds).255.2 255. Flags: authoritative unique nat registered used NBMA address: 10.0.1111. Cisco 300-101 Exam 10. C.255. The mask is always 255. D.1111. Tunnel0 created 0:10:03 expire 1:49:56 Type: static Flags: authoritative NBMA address: 10.255. tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative NBMA address: 10.255.1111.2/8 via 10.1.1. Tunnel1 created 00:00:12. • The interface type and number and how long ago it was created (hours:minutes:seconds). Answer: A Explanation: Show NHRP: Examples The following is sample output from the show ip nhrp command: Router# show ip nhrp 10.0. Dynamic.1111. B.

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

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

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

Using this initial hub- and-spoke network. only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D.CareerCert. tunnels between spokes can be dynamically built on demand (dynamic-mesh) without additional configuration on the hubs or spokes.org/wiki/Dynamic_Multipoint_Virtual_Private_Network Topic 5. only ssh traffic to vty 0 4 from source all C. DMVPN is combination of the following technologies: Reference: http://en. This dynamic-mesh capability alleviates the need for any load on the hub to route data between the spoke networks.wikipedia. 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. 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.info 98 . all traffic to vty 0 4 from source all Answer: C Explanation: www. NHRP and Ipsec. all traffic to vty 0 4 from source 2001:DB8:0:4::32 B. DMVPN is initially configured to build out a hub-and-spoke network by statically configuring the hubs (VPN headends) on the spokes. 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. GRE. including Ipsec (Internet Protocol Security) and ISAKMP (Internet Security Association and Key Management Protocol) peers.

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

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

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

255.255 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 — 172. D. It prevents private internal addresses to be accessed directly from outside.0.255. 192.255.0. It prevents incoming traffic from IP address ranges 10.168.168.255 172.168. which is applied on the external interface FastEthernet 1/0 of the perimeter router.0.0.0 — 10. B.16.168. 172.0.255.255 any log router (config)#access-list 101 deny ip 172.31. Answer: C Explanation: The private IP address ranges defined in RFC 1918 are as follows: 10.0 0.255 192.255 and logs any intrusion attempts. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet.255. The log keyword also enables logging of this intrusion attempt.0- 172.0.255.15. C.168.255. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts.0. QUESTION NO: 59 Refer to the following command: www.255. This ACL is used to prevent all packets with a spoofed reserved private source IP address to enter the network.16.255 any log router (config)#access-list 101 deny ip 192.CareerCert.0 — 192.info 102 .0-10.0.255.0.0 0.0 0.255.0.0-192. accomplish? Router(config)#access-list 101 deny ip 10.255.255 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.0.0.0. Cisco 300-101 Exam QUESTION NO: 58 What does the following access list.31.255.0.0.16.

C.20. use the no form of this command. router(config-if)#ip helper-address 172.225 D.com/en/US/docs/ios-xml/ios/https/command/nm-https-cr-cl- sh. 53. router(config-if)#udp helper-address 172. D.20.225 C. Answer: A Explanation: To set the secure HTTP (HTTPS) server port number for listening.14. Reference: http://www. use the ip http secure-port command in global configuration mode. The default is 443. The router will listen on port 4433 for HTTPS traffic. To return the HTTPS server port number to the default. router(config-if)#ip udp helper-address 172.20.CareerCert.20.info 103 .14. but the port number must be higher than 1024 unless the default is used. and 49 to 172.20. Which command should be applied to the configuration to allow this? A. The router will listen to HTTP and HTTP traffic on port 4433.225. The router will never accept any HTTP and HTTPS traffic. The router will listen on port 4433 for HTTP traffic.14. The www.14. 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. B.225 69 53 49 Answer: A Explanation: To let a router forward broadcast packet the command ip helper-address can be used.cisco.html#wp3612805529 QUESTION NO: 60 A network engineer is configuring a routed interface to forward broadcasts of UDP 69. router(config-if)#ip helper-address 172.14. Cisco 300-101 Exam router(config)# ip http secure-port 4433 Which statement is true? A.225 B.

router(config)#snmp-server host 172. Most companies have decided that the information being transmitted isn’t valuable enough to be worth the extra effort in upgrading to SNMPv3. Infrastructure Services QUESTION NO: 61 A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications.16. Cisco 300-101 Exam broadcasts will be forwarded to the unicast address which is specified with the ip helper command.28 traps version 2c CISCORO B. router(config)#snmp-server host 172.201.16. router(config)#snmp-server host 172.16. It’s simple to configure on both the router/switch-side and just as easy on the network monitoring server.com/163/forward_udp_broadcas. The problem of course is that the SNMP statistical payload is not encrypted and authentication is passed in cleartext.28 informs version 2c CISCORO C.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.201. www. 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. However.cisco-faq. Which command satisfies the requirements of this scenario? A. router(config)#snmp-server host 172. but I would suggest otherwise.28 traps version 3 auth CISCORO D. the engineer is not concerned with authentication or encryption.16.201. ip helper-address {ip address} When configuring the ip helper-address command.info 104 .201.CareerCert.html Topic 6.

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

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

B. Answer: A Explanation: The NTP service can be activated by entering any ntp command. Cisco 300-101 Exam Using File Transfer Protocol (FTP) • Using remote copy protocol (rcp) • Using a Flash disk Reference: http://www.info 107 . Assuming that an NTP server is already set up. D.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. When you use the ntp broadcast client command. It enables receiving NTP broadcasts on the interface where the command was executed. It enables receiving NTP broadcasts on all interfaces globally. C. It enables a device to receive NTP broadcast and unicast packets. what is the result of the command? A.cisco.cisco.html QUESTION NO: 66 What is a function of NPTv6? www.html QUESTION NO: 65 A network engineer is trying to implement broadcast-based NTP in a network and executes the ntp broadcast client command. It enables a device to be an NTP peer to another device. 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. Command Description ntp broadcast client Allows the system to receive NTP broadcast packets on an interface.CareerCert.com/en/US/docs/internetworking/troubleshooting/guide/tr19aa. Reference: http://www.

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

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. What is the result? A. there is no need to send the control message.1).html QUESTION NO: 69 A network engineer executes the “ipv6 flowset” command.cisco. service-oriented C. In this example. Device A (target device) Configuration configure terminal ip sla responder tcp-connect ipaddress 10. the control protocol is disabled on the source (Device B). connection-oriented D. Which type of statistics does the engineer see? A. The operation is scheduled to start immediately. www.CareerCert.0. as shown in the “TCP Connect Operation” figure in the “Information About the IP SLAs TCP Connect Operation” section. Flow-label marking in 1280-byte or larger packets is enabled. In this example. Cisco 300-101 Exam Reference: http://en.1 port 23 Reference: http://www.info 109 .0.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt- book/sla_tcp_conn. application-oriented Answer: C Explanation: Configuration Examples for IP SLAs TCP Connect Operations The following example shows how to configure a TCP Connection-oriented operation from Device B to the Telnet port (TCP port 23) of IP Host 1 (IP address 10.0. connectionless-oriented B. IP SLAs uses the control protocol to notify the IP SLAs responder to enable the target port temporarily. This action allows the responder to reply to the TCP Connect operation. because the target is not a Cisco device and a well-known TCP port is used.0.wikipedia.

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

html QUESTION NO: 70 A network engineer executes the show ip flow export command.1.1 (1000) and 10.info 111 .1. Exporting using source IP address 10. Which line in the output indicates that the send queue is full and export packets are not being sent? A. fragmentation failures D.1 Specifies the source address or interface. output drops B. Version 5 flow records Specifies the version of the flow. adjacency issues Answer: A Explanation: Table 5 show ip flow export Field Descriptions Field Description Exporting flows to 10.1. enqueuing for the RP C. and the total number of flows contained within them. Reference: http://www. 0 flows failed due to lack of export packet No memory was available to create an export packet.cisco. The ports are in parentheses.1. 11 flows exported in 8 udp datagrams The total number of export packets sent.CareerCert.1 Specifies the export destinations and ports.3. 0 export packets were sent up to process level www.2. Cisco 300-101 Exam Example: Device(config)# ipv6 flowset Configures flow-label marking in 1280-byte or larger packets sent by the device.com/c/en/us/td/docs/ios-xml/ios/ipv6_basic/configuration/15-mt/ip6b- 15-mt-book/ip6-mtu-path-disc.

Reference: http://www.10.10. 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. D. Which functions do the two commands serve in this scenario? A. 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. Cisco 300-101 Exam The packet could not be processed by CEF or by fast switching. B. 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.html QUESTION NO: 71 A network engineer is asked to configure a “site-to-site” Ipsec VPN tunnel.CareerCert. Answer: D Explanation: Configuring NAT to Allow Internal Users to Access the Internet Using Overloading NAT Router interface 116thernet 0 ip address 10.com/c/en/us/td/docs/ios/12_0s/feature/guide/oaggnf. The command access-list 1 defines interesting traffic that is allowed through the tunnel. The command access-list 1 permit any defines only one machine that is allowed through the tunnel.1 255.255. 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. 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. 0 export packets were dropped due to output drops Indicates that the send queue was full while the packet was being transmitted.0 www. possibly because another feature requires running on the packet.cisco. C.info 112 . 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.

Ip nat pool ovrld 172.Indicates that any packets received on the inside interface that !--.31 access-list 7 permit 10. !--. ip nat inside source list 7 pool ovrld overload ! ! ! ! !--.1 172.10.10. Cisco 300-101 Exam ip nat inside !--.10.0.16.16.Translations are overloaded.info 113 .10.Defines a NAT pool named ovrld with a range of a single IP !--.255.0.Defines Ethernet 1 with an IP address and as a NAT inside interface.255.20.10. which allows multiple inside !--.1 255.1 prefix 24 ! !--.0 0.0 ip nat inside !--.Defines serial 0 with an IP address and as a NAT outside interface.translated to an address out of the NAT pool named ovrld.255.10. 172.0 ip nat outside !--.1.are permitted by access-list 7 has the source address !--.devices to be translated to the same valid IP address.64 255.255. Access-list 7 permit 10. Interface serial 0 ip address 172.20.16.10.0 0.Defines Ethernet 0 with an IP address and as a NAT inside interface.31 www.16.CareerCert. Interface 116thernet 1 ip address 10.address.0.10.0.

31 and 10.0 through 10. Reference: http://www.0 through 10.10.com/c/en/us/support/docs/ip/hot-standby-router-protocol-hsrp/13780- 6. D. Note in the previous second configuration.info 114 . as an alternative to powering down the active router and letting the network respond accordingly.10. B.Access-list 7 permits packets with source addresses ranging from !--. C.cisco. 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. Which action will allow for manual switching of HSRP nodes? A.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.31. the NAT pool “ovrld”only has a range of one address.html www. This means that another HSRP router with higher priority can become the active router if that router has standby preempt enabled.CareerCert.10.shtml QUESTION NO: 72 A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows. Loopback interfaces can be tracked. Cisco 300-101 Exam !--. Enable HSRPv2 under global configuration.10.20. Track the up/down state of a loopback interface and shut down this interface during maintenance.10. which allows for maintenance mode. Reference: http://www. Disable and enable all active interfaces on the active HSRP node. 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. the HSRP priority is reduced.20.cisco. Adjust the HSRP priority without the use of preemption.10. 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.

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

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

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

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

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

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

10. For example.1 5858? A.com/c/en/us/td/docs/ios/12_0s/feature/guide/nfstatsa. then NetFlow might sample the 5th. This sample configuration provides NetFlow data on 1 percent of total traffic. if you set the sampling rate to 1 out of 100 packets.1 on port UDP/5858. incoming packets are randomly selected so that one out of each n sequential packets is selected on average for NetFlow processing.10.10.html#wp1084291 QUESTION NO: 81 What is the result of the command ip flow-export destination 10.1 on port UDP/5858.10.CareerCert.10. 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. 302nd. B.10.1 and port UDP/5858. Cisco 300-101 Exam Answer: A Explanation: The sampling mode determines the algorithm that selects a subset of traffic for NetFlow processing. It configures the router to export cache flow information about flows with destination IP 10.info 121 . 120th. The n value is a parameter from 1 to 65535 packets that you can configure.10. 199th.10. Answer: A www.10. C. In the random sampling mode that Random Sampled NetFlow uses. It configures the router to receive cache flow information about flows with destination IP 10.cisco.1 and port UDP/5858. and so on packets.10. D. It configures the router to receive cache flow information from IP 10. It configures the router to export cache flow information to IP 10.

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

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

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

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

Answer: A,B
Explanation:

QUESTION NO: 85

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

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

Answer: A,C,D
Explanation:

QUESTION NO: 86

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

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

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

Answer: A,B
Explanation:

QUESTION NO: 87

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

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

Answer: A,C
Explanation:

QUESTION NO: 88

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

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

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

Answer: A,B,C
Explanation:

QUESTION NO: 89

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

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

Answer: A
Explanation:

QUESTION NO: 90

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

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

Answer: A
Explanation:

QUESTION NO: 91

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

www.CareerCert.info 126

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

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

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

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

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

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

Answer: B Explanation: QUESTION NO: 108 Refer to the exhibit.2 Which configuration is required on the Router B fastethernet 0/0 port in order to allow the DHCP client to successfully receive an IP address from the DHCP server? A.0 interface serial 0/0 ip address 10.255.31. Consider the following output: hostname RouterB ! interface fastethernet 0/0 ip address 172.1 255.16.255.255.info 133 .1.255. The router acts as an authoritative NTP clock with a priority number of 10.1.0 10. The DHCP client is unable to receive a DHCP address from the DHCP server.255.1 255.2 www.1.1. The router acts as an authoritative NTP clock for 10 minutes only.1.CareerCert.1.16.0 255. Cisco 300-101 Exam C.252 ! ip route 172.1. D.255. RouterB(config-if)# ip helper-address 172.

C. Which statement about the configuration is true? www.info 134 . It is used to translate an IPv6 address prefix to another IPv6 prefix.1. It is used to translate IPv4 prefixes to IPv6 prefixes. It is used to translate IPv4 addresses to IPv6 link-local addresses.1 D.255. D.16. D. RouterB(config-if)# ip helper-address 172. an OK return code means that the track's state is down. RouterB(config-if)# ip helper-address 255. C. When tracking state.255. Which statement about state tracking is true? A. RouterB(config-if)# ip helper-address 172.31.255 Answer: A Explanation: QUESTION NO: 109 Which statement about the NPTv6 protocol is true? A.CareerCert. an OK return code means that the track's state is up. any other return code means that the track's state is up. any other return code means that the track's state is up. It is used to translate IPv6 prefixes to IPv4 subnets with appropriate masks.1 C. any other return code means that the track's state is down. B. Answer: A Explanation: QUESTION NO: 111 Refer to the exhibit. an OK or over threshold return code means that the track's state is up. When tracking state. Answer: B Explanation: QUESTION NO: 110 Two aspects of an IP SLA operation can be tracked: state and reachability. B. an OK or over threshold return code means that the track's state is down. Cisco 300-101 Exam B. When tracking state. any other return code means that the track's state is down.1. When tracking state.

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

the following message is seen on the console: %Dynamic Mapping in Use. Cisco 300-101 Exam B.10.254 netmask 255.2 on TCP port 5127. before any new NAT entries are populated into the translation table due to active NAT traffic.10.1.1.CareerCert. Answer: A Explanation: QUESTION NO: 113 A network engineer is trying to modify an existing active NAT configuration on an IOS router by using the following command: (config)# no ip nat pool dynamic-nat-pool 192. before any new NAT entries are populated into the translation table due to active NAT traffic. then replace the NAT configuration quickly. cannot destroy What is the least impactful method that the engineer can use to modify the existing IP NAT configuration? A.255.1. C.20 192.10. C. The router receives flow information from 10.1 on TCP port 5127. D. then replace the NAT configuration quickly. B.2 on UDP port 5127. then replace the NAT configuration quickly. The router receives flow information from 10. Clear the IP NAT translations using the clear ip nat traffic * " command.10.0 Upon entering the command on the IOS router. D.10. then replace the NAT configuration quickly. Clear the IP NAT translations using the clear ip nat table * " command.1. before any new NAT entries are populated into the translation table due to active NAT traffic. Answer: B Explanation: QUESTION NO: 114 www.10. before any new NAT entries are populated into the translation table due to active NAT traffic. Clear the IP NAT translations using the reload command on the router.255.info 136 . Clear the IP NAT translations using the clear ip nat translation * " command. Cannot remove message or the %Pool outpool in use. The router exports flow information to 10.

path Answer: A. throughput F.000 bytes E.000 bytes C.C Explanation: QUESTION NO: 116 If the total bandwidth is 64 kbps and the RTT is 3 seconds.000 bytes D. what is the bandwidth delay product? A.000 bytes Answer: C Explanation: www.info 137 . 16. Cisco 300-101 Exam Which IPv6 address type is seen as the next-hop address in the output of the show ipv6 rip RIPng database command? A. global C. delay B. 62.CareerCert.) A. 8. multicast Answer: A Explanation: QUESTION NO: 115 Which three items can you track when you use two time stamps with IP SLAs? (Choose three.000 bytes B. jitter C. site-local D. link-local B. anycast E. 24. load E.B. 32. packet loss D.

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

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

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

C. This configuration represents a complete PPPoE client configuration on an Ethernet connection. GRE VPN D.info 141 . 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. 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. This configuration is missing an IP address on the dialer interface. MPLS Answer: A Explanation: QUESTION NO: 127 www. traffic shaping B. D.CareerCert. IPsec VPN C. Which technology must be configured to prevent remote sites from getting overwhelmed with traffic and prevent packet drops from the headquarters? A. B. This configuration is incorrect because the MTU must match the ppp-max-payload that is defined.

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

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

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

stub area B. LLDP C. BGP B. backbone area D. 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. The engineer has assigned an IPv4 address on the tunnel and sourced the tunnel from an Ethernet interface.info 145 .CareerCert. 2. and 7 only. EIGRP www. Which option also is required on the tunnel interface before it is operational? A. Cisco 300-101 Exam Answer: D Explanation: QUESTION NO: 132 The OSPF database of a router shows LSA types 1. 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. keepalives C. Which type of area is this router connected to? A. totally stubby area C. 3. tunnel destination address B.

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

16.1. (config)#ip cef (config)#interface fa0/0 www. Neither RADIUS nor TACACS+ allow for accounting of commands.0. (config)#ip cef (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via rx allow-default B. allow default route C. while also limiting spoofed 10. allow self ping to router B. allow based on ACL match D. Cisco 300-101 Exam E. Answer: B. source reachable via both Answer: D Explanation: QUESTION NO: 139 Refer to the exhibit.CareerCert.info 147 .0/8 hosts that could enter router R? A. Which option represents the minimal configuration that allows inbound traffic from the 172.0.0/24 network to successfully enter router R.D Explanation: QUESTION NO: 138 Which option is invalid when configuring Unicast Reverse Path Forwarding? A.

info 148 .10.1 any eq 80 D. E. (config)#no ip cef (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via rx D.10. The client listens to NTP broadcasts. B.10.1 eq 80 any permit ip any any B.10.1 any eq 80 permit ip any any C.10. permits all traffic except for http traffic sourced from the workstation with IP address 10. Answer: A. ip access-list extended 100 deny tcp host 10.10.10.1 any eq 80 permit ip any any Answer: D Explanation: QUESTION NO: 141 Which two statements indicate a valid association mode for NTP synchronization? (Choose two. The client broadcasts NTP requests.) A.CareerCert. applied to the WAN interface of a router.10. (config)#interface fa0/0 (config-if)#ip verify unicast source reachable-via any Answer: A Explanation: QUESTION NO: 140 Which outbound access list.10. ip access-list extended NO_HTTP deny tcp host 10.10. ip access-list extended 200 deny tcp host 10.1? A. D. The client multicasts NTP requests. The client creates a VPN tunnel to an NTP server. ip access-list extended 10 deny tcp host 10. C. The client polls NTP servers for time.C www. Cisco 300-101 Exam (config-if)#ip verify unicast source reachable-via rx C.

168.165. ip nat inside source list 10 interface FastEthernet0/1 overload B.1 8080 extendable A.CareerCert.165. B. Which command allows hosts that are connected to FastEthernet0/2 to access the Internet? A.201.165.50 80 209. ip nat inside source list 10 interface FastEthernet0/2 overload D.50 to access external websites using TCP port 8080.10.225 10. Cisco 300-101 Exam Explanation: QUESTION NO: 142 Refer to the exhibit. It allows host 192.info 149 .1. 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 192.1.1 to connect to a web server at www.201. ip nat outside source static 209.200.10. It allows external clients coming from public IP 209.168.0 overload C.

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

Answer: C
Explanation:

QUESTION NO: 144

Refer to the exhibit.

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

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

Answer: C
Explanation:

QUESTION NO: 145

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

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

www.CareerCert.info 150

Cisco 300-101 Exam
E. web interface

Answer: A,B
Explanation:

QUESTION NO: 146 DRAG DROP

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

Answer:

www.CareerCert.info 151

Cisco 300-101 Exam

Explanation:

www.CareerCert.info 152

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

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

info 155 .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. www.

router(config-ip-sla-echo)#timeout 3 www.info 156 .16. 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.16. router(config-ip-sla)#icmp-echo 172.201. Which two commands accomplish this task? (Choose two.) A.201.25 every 3 seconds using an ICMP echo packet via an ICMP echo probe.CareerCert.

router(config-ip-sla)#udp-echo 172.25 interval 100 D. Cisco 300-101 Exam C.16. router(config-ip-sla-echo)#frequency 3 E.info 157 .201.201.D www.16. router(config-ip-sla)#icmp-jitter 172. router(config-ip-sla-echo)#threshold 3 Answer: A.CareerCert.25 source-port 23 F.

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