Question 1

Which two BGP route reflector attributes should be implemented to prevent routing loops? (Choose two)

Options :

A : CLUSTER_ID

B : ORIGINATOR_ID

C : CLUSTER_LIST

D : COMMUNITY

E : AS_PATH

Answer: B,C

Question 2

Refer to the exhibit.

CE1 and CE2 cannot communicate through the service provider BGP peering is

established between PE1 and PE2. IS-IS is the only routing protocol running in the service provider core. What

step can be done to troubleshoot the issue?

Options :

A : Switch the IGPs running in the core from IS-IS to OSPF to support a Cisco MPLS TE tunnel from PE1 to PE2.

B : Configure BGP between CE and PE routers.

C : Confirm that IS-IS is running with metric-style narrow.

D : Verify the MPLS LSPs

Answer: D

Question 3

Refer to the exhibit.

After maintenance to activate BGP neighbors connecting a new data center attached to R1, L3VPN customers attached to OSPF domain 100 lost connectivity to services in OSPF 200 and OSPF 300 However Unified MPLS services within OSPF 100 remain reachable Which action must the network engineer take to resolve the outage?

Options :

A : Reset the BGP session between R1 and R2

B : Activate BGP neighbors between the new data center and R2 and R3

C : Establish new MPLS LSPs from R1 to R2, R3 and R4

D : Raise the maximum prefix limit on R2 to 1560 or more

Answer: A

Question 4

What is the function of BGP confederations?

Options :

A : They require routers to use private AS numbers.

B : They eliminate the need for a fully-meshed internal BGP design.

C : They enable a single device to distribute a common configuration to its peers

D : They assign an external BGP router to serve as the route reflector

Answer: B

Question 5

Refer to the exhibit. Router R1 is expected to receive routes that originate from AS 65547 only. However, R1 is receiving routes from AS 65547 and several other ASs that are directly attached to it. Which change to the AS path permit filter corrects the problem?

Options :

A : Change the regular expression to $.

B : Change the regular expression to.*.

C : Change the regular expression to _65547_.

D : Change the regular expression to A65547$

Answer: D