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SRC Certification
4A0-C02
Nokia SRA Composite Exam Questions and Answers

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Viewing page 5 out of 13 pages

Viewing questions 61-75 out of questions

Questions # 61:

What is the result of initiating an oam mac-ping to an unknown unicast MAC address in a VPLS instance?

Options:

The oam mac-ping will fail. The MAC address must be known in the local FDB to be successful.

The request will be flooded and the only response will come from the PE node that has learned the specified MAC address on a local SAP.

The request will be flooded and the CE device with the corresponding MAC will reply.

All nodes will reply because the oam mac-ping is flooded.

Answer

Questions # 62:

Click on the exhibit below.

Question # 62

Which ports will become root ports? (Choose 3)

Options:

Bridge B 1/1/3

Bridge B 1/1/2

Bridge C 1/1/2

Bridge C 2/1/1

Bridge D 1/1/1

Bridge D 1/1/3

Bridge E 1/1/1

Answer

A, D, F

Questions # 63:

What must be enabled in order to prevent a loop within a LAG?

Options:

RSTP

Dynamic-cost

LACP active

Nothing, There are no loops in LAGs

Answer

Questions # 64:

MAC explosion is best described as a large amount of MAC addresses being withdrawn and relearned?

Options:

TRUE

FALSE

Answer

Questions # 65:

Click on the exhibit below.

Question # 65

Based on the output below which of the following statements is true?

Options:

This Bridge is furthest from the Root Bridge within the VPLS mesh.

This Bridge is the Root Bridge.

SAP 1/1/1 is an Edge Port.

This Bridge is closest to the Root Bridge within the VPLS mesh.

Answer

Questions # 66:

Which of the following is NOT a feature of the IEEE 802.3ah EFM standard?

Options:

Discovery and auto-negotiation of OAM capabilities.

Link monitoring via event notifications.

Remote failure indication (RFI).

Remote Loopback

Latency and jitter across a service.

Answer

Questions # 67:

You are providing a customer two VPLS services in two different Metro networks. VPLS 500 has been configured in Metro 1 and VPLS 900 has been configured in Metro 2. The customer has requested that they have connectivity between the Metro Networks with their existing VPLS services. Which configuration on the PE routers linking the metro networks will allow for VPLS 500 and VPLS 900 to act as a single VPLS service? Assume default values for all VPLS parameters and SDP 999 exists between the metro networks.

Question # 67

Options:

Option A

Option B

Option C

Option D

Answer

Questions # 68:

Click on the exhibit below.

Question # 68

Given the following output what is the most likely reason the SDP binding is operationally down? (Choose 2)

Options:

The sdp id is different on the far-end.

LDP is disabled on the far-end.

The vc-id is different on the far-end.

The mesh-sdp is missing on the far-end.

The mesh-sdp is administratively shutdown on PEL

There is an MTU mismatch.

Answer

C, D

Questions # 69:

Why is it best practice to set the bridge priority in an STP network? (Choose 2)

Options:

This is not a best practice. Any switch can be used as the root bridge.

So that you know which links will be active in your network.

To prevent a new switch from becoming root when added to the network.

To allow all ports on the root switch to become alternate ports.

Answer

B, C

Questions # 70:

How many designated ports are there in a spanning tree topology?

Options:

The same as the number of alternate ports in the topology

1 per segment

The same as the number of root ports

1 per switch

Answer

Questions # 71:

The FDB has learned 2 MAC addresses. The first is from a device accessible via a locality defined SAP, the second is from a device accessible via an SDP. Both MAC addresses were learned at the exact same time. If all traffic from these hosts stops at the same time, which address will age out first from the FDB based on default settings?

Options:

MAC learned via SAP

MAC learned via SDP

There is not enough information to determine

Both will timeout at the same time

Answer

Questions # 72:

Click on the exhibit below.

Question # 72

The VPLS service MTU on R2 is 1514 bytes. What must the service MTU be on all other routers participating in the VPLS?

Options:

The service MTU must be equal to or smaller than 1514 bytes.

The service MTU must be 1514 bytes.

The service MTU must be equal to or greater than 1514 bytes.

The service MTU can be any value.

Answer

Questions # 73:

Which service component in the data plane uniquely identifies a VPLS to the far end PE node?

Options:

SDP id

Service ID

VC Label

Tunnel Label

Customer id

Answer

Questions # 74:

In RSTP, an alternate port is on the same switch as a designated Port.

Options:

TRUE

FALSE

Answer

Questions # 75:

Click on the exhibit below.

Question # 75

Assuming there is a full mesh of mesh-SDPs between the PEs within each metro network and a spoke-SDP between PE-C of Metro A and PE-B of Metro B. how is traffic forwarded from PE-A in Metro A to PE-D of Metro B? Select the most accurate statement.