NRS II Composite Exam: OSPF version Practice Questions & Answers • ExamPrepare

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Question 1

Which of the following statements about route reflectors is FALSE?

Route reflectors are used to reduce the number of iBGP sessions required in an AS.
A route reflector advertises eBGP learned routes to all client and non-client iBGP peers.
A route reflector advertises iBGP routes received from a client peer to all client and non-client iBGP peers.
A route reflector advertises iBGP routes received from a non-client peer to all client and non-client iBGP peers.

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Question 2

When a VPN service spans multiple regions managed by different operators, which of the following statements about how the MP-BGP address families improve the scalability of VPN control-plane signaling is TRUE?

By signaling service labels between edge routers of adjacent regions, using VPN-IPv4 and VPN-IPv6 prefixes.
By signaling transport tunnels between edge routers of adjacent regions for inter-region tunnel stitching, using VPN-IPv4 and VPN-IPv6 prefixes.
By signaling end-to-end service labels between PE routers in different regions, using labeled IP prefixes.
By signaling end-to-end inter-region transport tunnel, using labeled IP prefixes.

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Question 3

In a traditional (non EVPN) VPRN service, which of the following statements about Route Target (RT) is FALSE?

An RT is used to indicate the VPN service to which a route update is relevant.
An RT value is assigned to each VPRN service.
An RT is included as an extended community in MB-BGP route updates.
Configuring different RT values allows VPN customers to use the same private IP prefixes.

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Question 4

Which of the following statements about the Nokia 7750 SR sdp-ping is TRUE?

It tests the IGP reachability of the far-end IP address of an SDP.
It tests that the MTU settings of a service are correct.
It tests in-band, uni-directional or round-trip connectivity of SDPs.
It tests the reachability of hosts connected to an SDP.

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Question 5

Consider the exhibit. The output is from router R4 for VPLS 333. Why might the peer 10.10.10.1 have the same value for IngLbl and EgrLbl?

The labels are of local significance only, so multiple routers can use the same value.
Router 10.10.10.1 has yet to send its own unique label.
Router R4 is using the same tunnel to send to and receive from router 10.10.10.1.
The service on router 10.10.10.1 is down, so it is rejecting packets.

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Question 6

On a Nokia 7750 SR, which vc-type will forward service delimiting tags at the ingress PE?

vc-type ether
vc-type vlan
vc-type dot1q
vc-type null

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