Cisco CCNP Service Provider 300-510 Questions & Answers

• Question 51:

  Refer to the exhibit.

  

  Routers RA and RB are IS-IS peers configured for NSF but router RC is an IS-IS peer without NSF capability If RA undergoes processor switchover what is the effect on the network environment?

  A. If RC is operating without the Cisco configuration option all three routers tear down their peering relationships and re-establish peering

  B. All peer relationships remain up and the link-state database is unchanged

  C. All peer relationships remain up, but the link-state database is rebuilt on each device

  D. If RC is operating without the Cisco configuration option only 2 routers tear down their peering relationships and re-establish peering

  Correct Answer: C

• Question 52:

  An ISP has an MPLS VPN-based network with 12 PE routers.

  How many peerings are required between the 12 routers if the engineer has not configured route reflectors?

  A. 60

  B. 66

  C. 78

  D. 84

  Correct Answer: B

• Question 53:

  Refer to the exhibit

  

  Networks 172.16.31.0/24 and 172 16 30.0/24 are advertised in area 34. and network 172.22 10.0/24 is advertised in area 0.

  A recent security review discovered that users connected to routers R1 and R2 have been making unauthorized access to an application running on network 172 16 31 0/24

  An engineer determined that routers R1 and R2 are receiving updates for network 17 16 31 0/24

  Which action resolves the issue?

  A. Apply route filtering on routers R3 and R4.

  B. Apply route filtering on router R3 only.

  C. Apply route filtering on routers R1 and R2

  D. Apply route filtering on router R4 only.

  Correct Answer: D

• Question 54:

  Refer to the exhibit.

  

  A network engineer is configuring router R3 to handle multicast streams, but Host-2 cannot send subscriptions messages to the IPTV source.

  Which configuration must the engineer apply to router R3 so it passes the IPTV stream to Host-2?

  A. R3# configure terminalR3(config)# no ip pim ssm defaultR3(config)# interface gigabitethernet 1/0/0R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3R3(config-if)# ip pim ssm defaultR3(config)# interface gigabitethernet 1/0/1R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3R3(config-if)# ip pim ssm default

  B. R3# configure terminalR3(config)# ip multicast-routingR3(config)# interface gigabitethernet 1/0/0R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3R3(config)# interface gigabitethernet 1/0/1R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3R3(config-if)# ip pim ssm default

  C. R3(config)# interface gigabitethernet 1/0/0R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3R3(config)# interface gigabitethernet 1/0/1R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3

  D. R3(config)# interface gigabitethernet 1/0/0R3(config-if)# ip pim sparse-modeR3(config)# interface gigabitethernet 1/0/1R3(config-if)# ip pim sparse-modeR3(config-if)# ip igmp version 3

  Correct Answer: D

• Question 55:

  Refer to the exhibit.

  

  MPLS traffic from 192.168.4.0/24 to 192.168.5.0/24 is failing to pass over the link from R4 to R2. The engineer verified that:

  1.

  Cisco Express Forwarding Is enabled on all routers.

  2.

  All routers reach all networks via OSPF.

  3.

  MPLS traffic from 192.168.1.0/24 to 192.168.3.0/24 is passing normally over the link from R1 to R2. Which action resolves the issue?

  A. On router R4, remove the mpls ip command on the s/O/O/2 interface.

  B. On router R2, configure the mpls ip command on the SIO/O/4 interface.

  C. On router R4, configure the mpls label protocol Idp command on all serial interfaces.

  D. On router R2, configure the mpls label protocol Idp command on the interface.

  Correct Answer: B

• Question 56:

  Refer to the exhibit

  

  An engineer is troubleshooting a networking issue with several symptoms

  The shortest path from router R1 to R8 is underused and the longest path is overused

  Traffic from 10.1.1 1 to 10 8 8 8 is routed on the longest path Traffic between the R1 and the application server is experiencing packet drops and latency problems.

  Which action resolves the issue?

  A. Configure route leaking for the IP address Of the application server on router RI.

  B. Increase the RI to R2 link metric to 20.

  C. Configure a Level 2 IS-IS domain on router RI.

  D. Block the advertisement of the application server IP address to router R6.

  Correct Answer: C

• Question 57:

  Refer to the exhibit.

  

  Customer A is a small media company with two offices connected by a 512 Kbps line. Their NY office is connected to several external partners by static routes on router R3.

  VoIP services use VoIP codec G729 Users reported poor voice quality and slow data transfer between the offices A network engineer configured ip tcp header- compression iphc-format on R2 and R3 routers

  Which additional action must the engineer take to fix the issue?

  A. Configure the ip ospf I area O command under Serial 1/1 interfaces on R2 and R3 to avoid routing loops

  B. Change the OSPF router ID on either router so that the router IDs are unique.

  C. Configure the summary-address 10.10.0.0 255.255.240.0 command on R3 to optimize OSPF communication

  D. Configure the BGP routing protocol between R2 and R3 to control route propagation.

  Correct Answer: C

• Question 58:

  Refer to the exhibit.

  

  P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied.

  The BGP session is not coming up.

  Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other.

  Which action fixes the issue?

  A. Change HMAC-MD5 to HMAC-SHA1-20

  B. Configure the send and accept lifetime under key 1

  C. Change HMAC-MD5 to MD5

  D. Change HMAC-MD5 to HMAC-SHA1-12

  Correct Answer: B

• Question 59:

  What is the purpose of ACL type prefix set entries in RPL prefix sets?

  A. They hold IPv4 or IPv6 prefixes that do not match specifications.

  B. They hold IPv4 or IPv6 prefix match specifications.

  C. They hold IPv6 prefix match specifications.

  D. They hold IPv4 prefixes that do not match specifications.

  Correct Answer: B

• Question 60:

  Refer to the exhibit.

  

  R21 is a multicast source sending multicast traffic 224.1.1.1 to R23, with RP22 serving as the rendezvous point inside AS65222.

  A network engineer noticed that when R21 goes down, R12 in AS65111 starts to send the same multicast group 224.1.1.1 through RP11.

  Which action resolves the issue ?

  A. Block service groups 224.0.1.39 and 224.0.1.40 between the two autonomous systems

  B. Disable PIM parse mode between RP11 and RP22 in the two autonomous systems.

  C. Advertise RP2 with a high local preference in AS65222.

  D. Enable passive intertaoe under EIGRP between the two autonomous systems.

  Correct Answer: A