Cisco CCNP Service Provider 300-510 Questions & Answers

• Question 151:

  Which feature is used in multicast routing to prevent loops?

  A. STP

  B. inverse ARP

  C. RPF

  D. split horizon

  Correct Answer: C

• Question 152:

  In which four ways does DHCPv6 differ from DHCPv4? (Choose four.)

  A. DHCPv6 uses the same message types as DHCPv4.

  B. DHCPv4 functions without external protocols.

  C. A host discovers a DHCPv6 server by using a DHCP Discover packet.

  D. A hosts discovers a DHCPv6 server by using a DHCP Solicit packet.

  E. A DHCPv6 server replies with a DHCP Offer packet.

  F. A DHCP server replies with a DHCP Advertise message.

  G. An IPv6 host can request multiple addresses at the same time from a DHCPv6 server.

  H. An IPv6 host can request only one IP address at a time from a DHCPv6 server.

  Correct Answer: BDFG

• Question 153:

  You have configured MSDP peering between two autonomous systems that pass traffic between two sites, but the peering has failed to come up. Which task do you perform to begin troubleshooting the problem?

  A. Verify that multicast has been disabled globally

  B. Verify that PIM-DM is configured on the source interface

  C. Verify that both source interfaces are reachable from both peers

  D. Verify that the two MSDP peers allow asymmetric routing

  Correct Answer: C

• Question 154:

  Refer to the exhibit.

  

  Why is neighbor 10.1.5.5 stuck in "2WAY" state?

  A. Router ID 10.1.5.5 is not reachable from R2

  B. OSPF authentication has failed between R2 and 10.1.5.5

  C. It is an expected behavior when OSPF network type is broadcast

  D. OSPF parameters (Area ID or hello interval) are mismatched between R2 and 10.1.5.5

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13683-11.html

• Question 155:

  An engineer is troubleshooting a connectivity issue across the MPLS network and is verifying the forwarding behavior of packets.

  Which table does the engineer look at to verify the forwarding behavior of an IP packet as it enters the MPLS network at the ingress LSR?

  A. LFIB

  B. LIB

  C. RIB

  D. FIB

  Correct Answer: A

  https://community.cisco.com/t5/image/serverpage/image-id/44142iC3B9032F415B1395?v=v2

• Question 156:

  Which two conditions must be met before separate ISPs can provide interdomain multicast routing? (Choose two.)

  A. Each ISP must configure MSDP to connect its individual multicast administrative domain to the domains at other ISPs.

  B. Each ISP must dedicate a single router to handle multicast traffic between providers.

  C. Each ISP must replace its RP assignment with a global RP.

  D. Each ISP must configure its network to use PIM-DM.

  E. Each ISP must support intradomain multicast routing.

  Correct Answer: AE

• Question 157:

  Refer to the exhibit.

  

  Router 1 has established an SR-TE tunnel with router 2. Which statement describes this configuration?

  A. Router 1 has a list of labels used to explicitly lay out a path to router 2.

  B. Router 1 and router 2 have a bidirectional tunnel set up with dynamic path selection.

  C. Router 1 is the head-end tunnel and has dynamically chosen a path to router 2.

  D. Router 2 is the head-end tunnel and has explicitly set a path to router 1.

  Correct Answer: C

• Question 158:

  Refer to the exhibit.

  

  Which configuration ensures that RR2 does not send the same updates to PE2 that RR1 learns via PE1?

  A. RR1 and RR2 should have different router IDs.

  B. RR1 and RR2 should have different originator IDs.

  C. RR1 and RR2 should have the same router IDs.

  D. RR1 and RR2 should have the same cluster IDs.

  Correct Answer: D

• Question 159:

  Refer to the exhibit.

  

  R1 is directly connected to R2 and R3. R1 is in BGP AS 123, R2 is in BGP AS 2, and R3 is in BGP AS 3. Assume that there is no connectivity issue between R1, R2 and R1, R3. Which result between BGP peers R1, R2 and R1, R3 is true?

  A. The BGP session does not come up between R1 and R2 and between R1 and R3.

  B. The BGP session comes up between R1 and R2 and between R1 and R3.

  C. The BGP session comes up between R1 and R3, but not between R1 and R2.

  D. The BGP session comes up between R1 and R2, but not between R1 and R3.

  Correct Answer: B

• Question 160:

  What can be used to determine a path from the head-end to a tail-end router when implementing SR-TE with a head-end, with little information on the network topology?

  A. traffic controller

  B. path computation engine

  C. tail-end router

  D. SNMP server

  Correct Answer: B