Question 1

Which feature is used in multicast routing to prevent loops?

Options :

A : STP

B : inverse ARP

C : RPF

D : split horizon

Answer: C

Question 2

The engineering team at ISP_1 must improve network stability time and minimize the impact of routing instabilities from other domains to unicast transit services in the backbone R1 is part of an OSPF- enabled network, and acts as an ASBR connected via interface GiO to the external domain The OSPF exponential backoff algorithm RFC 3623 with helper mode is already implemented on R1 Which additional configuration must the ISP_1 team apply to suppress routing instability for 3 minutes'?

Options :

A : Configure ip ospf resync-timtout 180 under the Gi0'1 interface configuration

B : Configure ip ospf timer nsf interval 3 under the global Gi0'1 interface configuration

C : Configure nsf ittf restart-inttrval 180 under the global OSPF configuration

D : Configure nsf ospf wait 3 under the global OSPF configuration

Answer: A

Question 3

Refer to the exhibit.

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?

Options :

A :

B :

C :

D :

Answer: D

Question 4

Refer to the exhibit.

Refer to the exhibit A network engineer installed a new router (router 3) at the regional hub running MPLS services for scalability Router 3 is connected to the 10.44 4.0,'24. 10.44 5.024. 10 44.6.0/24. and 10 44 7 0/24 subnets The new router has been configured for OSPF area 2. and it is advertising the four connected networks. The engineer noticed that the same networks are listed as interarea summary routes, and they are being flooded into each area on the area borders Which action resolves the issue?

Options :

A : On router 3, configure an access list to filter the networks.

B : On router 2, configure a route map to filter the networks.

C : Under the OSPF configuration on router 3. add area 2 range 10.44.4.0 255.255.252.0.

D : Under the OSPF configuration on router 2, add area 2 range 10.44.4.0 255.255.252.0.

Answer: D

Question 5

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

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