Nokia NRS II Composite Exam: OSPF version - 4A0-C04 Exam Practice Test

Question 1

Click the exhibit.

Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540". Which of the following regarding updates originating in AS 65540 is TRUE?

A. Router R3 rejects all updates originating in AS 65540.

B. Router R3 accepts updates from both routers R1 and R2.

C. Router R3 accepts updates received from router R1 and rejects updates transited through router R2.

D. Router R3 accepts updates transited through router R2 and rejects updates received from router R1.

Correct Answer: C

Question 2

Consider a device that uses per-platform label space; which of the following fields is NOT contained in the LFIB?

A. Incoming label

B. Incoming interface

C. Outgoing label

D. Outgoing interface

Correct Answer: B

Question 3

An LSP is configured with one-to-one FRR and node protection on a Nokia 7750 SR. Which of the following is FALSE?

A. Each PLR signals a protection tunnel that avoids the downstream node.

B. A link protection tunnel is signaled if a node protection tunnel cannot be established.

C. Protection tunnels used in this LSP are also detour tunnels.

D. A single protection tunnel can protect all LSPs that go through the same hop.

Correct Answer: D

Question 4

Which of the following statements regarding route reflectors is TRUE?

A. Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the AS.

B. Route reflectors propagate BGP learned routes to their clients.

C. Route reflectors disable iBGP split horizon for all iBGP peers in the AS.

D. Route reflectors do not work in conjunction with confederations.

Correct Answer: B

Question 5

Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. How many type 4 LSAs will be present in the network?

A. One for each of the routers in area 0

B. One.

C. One for each of the external routes exported by router R1.

D. Type 4 LSAs are not generated in this network topology.

Correct Answer: D

Question 6

Click the exhibit.

Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions. Given the following iBGP configuration on router A, what is the Next Hop for prefix
2001:DB8:A:401::1/128 on router B?

A. The IPv6 link-local address of the router A interface towards router D.

B. The IPv6 link-local address of the router D interface towards router A.

C. The IPv6 global address of router D.

D. The IPv6 global address of router A.

Correct Answer: D

Question 7

An autonomous system has 7 routers configured with BGP. How many iBGP sessions are required for a fully meshed configuration?

A. 42

B. 13

C. 7

D. 21

Correct Answer: D

Question 8

An interface is configured on a router for OSPF but the command "show router ospf neighbor" does not show any neighbors. Which of the following is NOT a possible cause?

A. An OSPF database description packet has not been received from the neighbor.

B. The interface is included in a different area than the neighbor router.

C. The interface facing the neighbor is down.

D. The router has not received a valid OSPF Hello packet from its neighbor.

Correct Answer: A

Question 9

Which utility on the Nokia 7750 SR can be used to investigate an MPLS path?

A. Idp-trace

B. Isp-trace

C. Sdp-ping

D. Svc-ping

E. Ping

Correct Answer: B

Question 10

What are the default settings for RSVP-TE on the Nokia 7750 SR?

A. Per-platform label space; liberal retention mode

B. Per-platform label space, conservative retention mode

C. Per-interface label space, conservative retention mode

D. Per-interface label space, liberal retention mode

Correct Answer: B

Question 11

Click on the exhibit.

Two LSPs traverse the path R1-R2-R3. Both LSPs are configured with facility fast reroute and link protection.
When router R1 is the PLR, which router becomes the Merge Point (MP) for this LSP?

A. Router R5

B. Router R2

C. Router R4

D. Router R3

E. Router R1

Correct Answer: B

Question 12

Click on the exhibit button below:

Consider the following:
- Router R2 is an ABR in OSPF Areas 0 and 1.
- Router R2 advertises the aggregate prefix 10.10.10.0/24 into Area 1.
- Router R1 in Area 0 generates LDP labels for FECs 10.10.102/31 and 10.10.10.4/31 Router R3 in Area 1 places these FECs in its LIB, but it does not place them in its LFIB. What can you do on router R3 to make it populate these labels in its LFIB?

A. Disable route summarization on router R3

B. Create an import policy to accept these FECs

C. Disable LDP exact match on the specified FECs

D. Enable LDP aggregate prefix match

Correct Answer: D

Question 13

Click the exhibit.

Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions.
Which of the following configurations is required on router A so that router B can exchange traffic with router D?

A. Option D

B. Option B

C. Option A

D. Option C

Correct Answer: C

Question 14

How is the aggregator attribute handled with 32-bit AS numbers?

A. By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTLV.

B. Aggregation is not yet supported with 32-bit AS numbers.

C. With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

D. With the same method and attribute as 16-bit AS numbers.

Correct Answer: C

Nokia NRS II Composite Exam: OSPF version - 4A0-C04 Exam Practice Test

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