Cisco CCNP Service Provider 300-510 Questions & Answers

• Question 111:

  Which multicast group range is reserved for SSM?

  A. 224.0.0.0/8

  B. 225.0.0.0/8

  C. 232.0.0.0/8

  D. 239.0.0.0/8

  Correct Answer: C

• Question 112:

  Which protocol can be used to secure multicast in a group multicast solution where group key management is needed for secure key exchange?

  A. DOI

  B. ISAKMP

  C. GDOI

  D. IPsec

  Correct Answer: C

• Question 113:

  Refer to the exhibit.

  

  Which three statements are correct regarding the Cisco IOS-XR configuration? (Choose three.)

  A. This router, acting as the RP mapping agent, will send RP announcement messages to the 224.0.1.40 group

  B. This router, acting as the RP mapping agent, will send RP discovery messages to the 224.0.1.39 group

  C. This router is the RP mapping agent only for the 224.11.11.11 and 224.99.99.99 multicast groups

  D. This router is a candidate PIM-SM RP for the 224.99.99.99 multicast group

  E. This router is a candidate PIM-BIDIR RP for the 224.11.11.11 multicast group

  F. IGMPv3 is enabled on all interfaces

  G. Other routers will recognize this router as the RP for all multicast groups with this router loopback 0 IP address

  Correct Answer: DEF

• Question 114:

  Refer to the exhibit.

  

  A network operator must stop 10.33.33.33/32 from being redistributed into Level 1 router XR1. Which configuration meets this need?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

• Question 115:

  Referring to the topology diagram show in the exhibit, which three statements are correct regarding the BGP routing updates? (Choose three.)

  

  A. The EBGP routing updates received by R1 from R5 will be propagated to the R2, R4, and R7 routers

  B. The EBGP routing updates received by R3 from R6 will be propagated to the R2 and R4 routers

  C. The EBGP routing updates received by R1 from R5 will be propagated to the R2 and R4 routers

  D. The IBGP routing updates received by R3 from R2 will be propagated to the R6 router

  E. The IBGP routing updates received by R2 from R1 will be propagated to the R3 router

  F. The IBGP routing updates received by R1 from R4 will be propagated to the R5, R7, and R2 routers

  Correct Answer: ABD

• Question 116:

  Refer to the exhibit.

  

  Which attribute can router 1 alter so that only other iBGP peers prefer to use 192.168.4.2 as the next hop for route 192.168.3.0/24?

  A. MED

  B. local preference

  C. origin

  D. weight

  Correct Answer: B

  Weight is local to the router while LP allows routers in an AS with multiple exit points to choose which exit point is used to reach a particular NLRI.

• Question 117:

  Refer to the exhibit.

  

  An engineer has successfully fixed BGP peering issue. R1 has an established eBGP peering with R2 and R3. Which mechanism should the engineer apply in order to steer the traffic correctly?

  A. The MED attribute can be applied on R2 to influence R1 to use it as the primary path.

  B. The local preference attribute can be applied on R3 to influence AS 65513 to use AS 65515 as the secondary path.

  C. The weight attribute can be applied on R2 to influence AS 65513 to use AS 65515 as the primary path.

  D. The IGP metric can be manipulated on R1 to allow traffic to be load balanced between R2 and R3.

  Correct Answer: D

  Some level of load balancing is achieved by default as BGP prefers shortest AS_PATH for certain prefix (Cisco BGP path selection algorithm - rule 4) . If 1-7 rules gives no preference for certain prefix then with rule 8. Prefer lowest IGP metric to BGP next hop we can force traffic to R2 or R3 influencing load distribution.

• Question 118:

  Which two characteristics unique to SSM when compared to ASM are true? (Choose two.)

  A. It uses SPT switchover

  B. It uses (*,G) exclusively

  C. It uses IGMPv3

  D. It uses RP

  E. It uses (S,G) exclusively

  Correct Answer: CE

• Question 119:

  

  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 120:

  Refer to the exhibit.

  

  CE1 is the gateway router into the provider network via PE1. A network operator must inject a default route into OSPF area 0. All devices inside area 0 must be able to reach PE1. Which configuration achieves this goal?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/47868-ospfdb9.html