Nokia SRA Composite Exam (4A0-C02) Free Practice Test

Question 1

An l-VPLS is configured with a service id of 511. What will the value of the l-SID be assuming a default configuration?

A. The 1-SID will default to 511 .the value of the service-id.

B. The 1-SID only supports a range from 1 to 255.

C. The 1-SID must be explicitly configured.

D. Thel"SIDwilldefaultto131582, the value of the service-id + 131071.

Correct Answer: A

Question 2

The port groups have been configured consistently on the PE routers, as highlighted in the exhibit. Which SDP connection will be blocked first when the re-learn rate is exceeded?

A. The connection between PE-A and PE-C

B. The connection between PE-D and PE-C

C. The connection between PE*D and PE-B

D. The connection between PE-A and PE-B

Correct Answer: D

Question 3

Which of the following statements describe the primary objectives of the policing of traffic flows on the Alcatel-Lucent 7750 SR? (Choose two)

A. Provide fairness between traffic flows, so that conforming (in-profile) traffic flows are not starved of bandwidth and/or buffer space by non-conforming (out-of-profile) flows.

B. Ensure that traffic flows conform to their traffic profile.

C. Ensure that variable latencies do not cluster short bursts of originally conforming packets and render them nonconforming.

D. Log violations of metered traffic flows exceeding the CIR value set on the entity across which the traffic is moving.

E. Minimize packet loss and reduce end to end latency.

Correct Answer: A,B

Question 4

To implement Hierarchical-QoS (Multi-tiered scheduling), which of the following actions must be undertaken? (Choose three)

A. H-QoS capabilities must be enabled globally on the router

B. The scheduler-policy must be referenced in the SAP-ingress and SAP-egress policies.

C. The network queue policy must be configured to make use of the scheduler-policy.

D. The scheduler-policy must be applied on the service SAP.

E. The queues in the SAP-ingress and SAP-egress policies do not require additional configuration attributes to make use of the hierarchical schedulers.

F. A scheduler-policy must be configured.

Correct Answer: B,D,F

Question 5

Which of the following commands may be used on an Alcatel-Lucent 7750 SR to display a network exported locally to BGP on the originating router? (Choose two)

A. Show router bgp routes

B. Show router bgp routes prefix <prefix>

C. Show router bgp neighbor <neighbor ip> advertised-routes

D. Show router bgp routes <prefix> hunt

E. Show router bgp routes <prefix> self-originated

Correct Answer: C,D

Question 6

Which of the following is not a valid BGP design for a network provider supporting VPRNs?

A. Route reflector configuration between PE devices

B. Full mesh of MP-BGP between PE devices

C. Full mesh of MP-BGP between all P devices

D. Confederation configuration between PE devices

Correct Answer: C

Question 7

Click on the exhibit below.

If the device connected to PE-A in Metro A sends a frame to PE-A that requires replication within the VPLS which devices is PE-A responsible for replicating the frame to?

A. PE-A must replicate the frame to all devices participating in the VPLS

B. All of the above

C. PE-A must replicate the frame to all devices in the Metro A

D. PE-A must replicate the frame to all PEs within Metro A

Correct Answer: D

Question 8

A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress. Which of the MPLS EXP fields will be marked?

A. The EXP field in the top MPLS header will be marked.

B. The EXP field in both the top and bottom MPLS headers will be marked.

C. Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress.

D. The EXP field in the bottom MPLS header will be marked.

E. For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked.

Correct Answer: B

Question 9

Which of the following regarding the connections between eBGP peers is TRUE?

A. eBGP peers are usually directly connected to each other.

B. eBGP peers typically use system addresses for session establishment.

C. eBGP peers do not propagate updates learned via iBGP.

D. eBGP peers are managed under a single administration.

Correct Answer: A

Question 10

Router R1, in AS 65540, has the export policy shown below. It advertises an aggregate route to eBGP peer router R2 in 65550. What is the AS Path of the aggregate route received by router R2?

A. 65540 1

B. 65550 65540

C. 65540

D. 65540 65540

Correct Answer: D

Question 11

Which of the following regarding BGP authentication on the Alcatel-Lucent 7750 SR is FALSE?

A. Authentication can only be configuredon the group or neighbor level.

B. Authentication is performed before establishing the BGP session.

C. Peer authentication may be optionally requested in an open message.

D. By default, MD5 authentication is disabled.

Correct Answer: A

Question 12

Click the exhibit.

For the inter-AS model B VPRN, which of the following protocols is used to advertise routes between PE1 and ASBRI?

A. iBGP

B. MP-iBGP

C. MP-eBGP

D. eBGP

Correct Answer: B

Question 13

Which of the following are examples of metrics for QoS?

A. Delay, jitter, packet loss

B. SNR, queue depth, latency

C. Signal degradation, attenuation, line loss

D. Attenuation, dispersion, latency

E. Latency, FIFO, WRED

Correct Answer: A

Question 14

On the Alcatel-Lucent 7750 SR, where can network-queue policies be applied? (Choose two)

A. On the access ingress port.

B. On the network egress port.

C. On the SAP.

D. On the ingress MDA.

E. On the egress MDA.

F. On the SDP.

Correct Answer: B,D

Question 15

Which of the following fields can be marked or remarked for frames belonging to a Layer 2 service?

A. Q-in-Q

B. ToS

C. DSCP

D. Dot1p

E. PREC

Correct Answer: D

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Nokia SRA Composite (4A0-C02) Free Practice Test