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Nokia 4A0-105 Nokia Virtual Private LAN Services Exam Practice Test

Demo: 23 questions
Total 156 questions

Nokia Virtual Private LAN Services Questions and Answers

Question 1

Click on the exhibit below.

The following IP filter has been configured and applied to a SAP in a non-VPLS service. Which of the following statements is true?

Options:

A.

An error will be generated and the configuration will not be allowed.

B.

The filter entry will be ignored and traffic matching the criteria will be forwarded

C.

All traffic matching entry 20 will be dropped.

D.

Traffic matching entry 20 will be forwarded to sdp 100:1.

Question 2

Click on the exhibit below.

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

Options:

A.

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

B.

This Bridge is the Root Bridge.

C.

SAP 1/1/1 is an Edge Port.

D.

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

Question 3

Which of the following statements about Spanning Tree Protocol is true?

Options:

A.

For the switches that are non-root or designated switches, the port with the highest combined cost to the root is the root port.

B.

In the case where two switches have the same priority, the switch with the lowest MAC address becomes the root.

C.

The switch port that is the greatest distance from the LAN to the root is the designated port.

D.

All of the above.

Question 4

Which element of IEEE 802.1ag is responsible for initiating CFM messages?

Options:

A.

MEP

B.

MAP

C.

MIP

D.

MUP

Question 5

Click on the exhibit below.

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

Options:

A.

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

B.

The service MTU must be 1514 bytes.

C.

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

D.

The service MTU can be any value.

Question 6

How can one ensure that a specific switch will be select as root in an STP network?

Options:

A.

Set the bridge priority to 131071.

B.

Set the bridge priority to 0.

C.

Set the bridge priority to 32768.

D.

Leave the bridge priority as the default.

Question 7

What is the SA in the Ethernet frame used for by a layer 2 switch?

Options:

A.

MAC learning

B.

SA filtering

C.

Routing table population

D.

Frame forwarding

Question 8

Click on the exhibit below.

The MDU attached to this PE has been configured with active/standby SDP's configuration option has been configured for the PE to recognize that this SDP is in standby mode?

Options:

A.

On the PE the endpoint has been configured with "supress-standby-signalling"

B.

On the PE the endpoint has been configured with "no supress-standby-signalling"

C.

On the MDU the endpoint has been configured with "supress-standby-signalling"

D.

On the MDU the endpoint has been configured with "no supress-standby-signalling1

Question 9

H-VPLS solves the data-plane and control-plane problems with the exception of one issue. What is the concern that H-VPLS does not solve?

Options:

A.

Increased LSP count.

B.

Number of TLDP sessions.

C.

The amount of network touches.

D.

FDB consumption.

E.

Increased bandwidth and replication.

Question 10

What configuration is required on the CE device when using MC-LAG?

Options:

A.

The CE must be configured with an MC-LAG to both PE devices.

B.

The CE must be configured with LACP in active mode.

C.

There is no configuration required on the CE.

D.

The CE must be an Nokia 7750 SR.

Question 11

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

Options:

A.

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

B.

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.

C.

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

D.

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

Question 12

What is the MTU impact on the SDP path-mtu if fast reroute, one-to-one mode is implemented on the LSP?

Options:

A.

There will be no impact on the path-mtu.

B.

The path-mtu will decrease by4 bytes.

C.

The path-mtu will increase by 4 bytes.

D.

The path-mtu will decrease by 8 bytes.

E.

The path-mtu will increase by 8 bytes.

Question 13

Click on the exhibit below.

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

Options:

A.

The sdp id is different on the far-end.

B.

LDP is disabled on the far-end.

C.

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

D.

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

E.

The mesh-sdp is administratively shutdown on PEL

F.

There is an MTU mismatch.

Question 14

What needs to be configured in a VPLS in order to forward customer STP BPDUs transparently?

Options:

A.

Spanning tree must be enabled within the VPLS.

B.

Spanning tree BPDUs must be untagged.

C.

Spanning tree BPDUs must be tagged.

D.

Spanning tree must be disabled within the VPLS.

Question 15

Click on the exhibit below.

Based on the following output what will the vc-id be of any mesh-sdp bound to this service?

Options:

A.

9000

B.

1514

C.

1000

D.

100

Question 16

When ports configured with IEEE 802.3ah EFM are operationally down, what must the device do before declaring the ports are up?

Options:

A.

The device will try to force the other side up using the evaluating flag in the PDU.

B.

The device will wait for the trasmit-interval of 5 before trying to rediscover the neighbor.

C.

The device will detect the port change and will wait for normal operation mode.

D.

The device will detect the port change and revert to discovery mode.

Question 17

After the "disable-learning" command has been executed at the VPLS level, a new client device originates a frame. What is the result?

Options:

A.

If the MAC address of this new client device does not reach the upper limit of the configured total number of MAC addresses allowed in the VPLS forwarding database, then the new MAC address will be stored.

B.

The new source MAC addresses will not be entered in the VPLS service forwarding database.

C.

New local source MAC addresses will not be entered in the VPLS service forwarding database, but new remote MAC addresses would continue to be entered.

D.

New remote source MAC addresses will not be entered in the VPLS services forwarding database, but new local MAC addresses would continue to be entered.

Question 18

Click on the exhibit below.

Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation. How must PE-A be configured?

Options:

A.

The port that the SAP belongs to must have the correct ether type configured.

B.

The SAP must be configured with the right VLAN tag.

C.

The SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified.

D.

All of the above.

Question 19

Click on the exhibit below.

CE-A is on VLAN 200 and CE-B is on VLAN 300. Which of the following SAP ids can be configured on PE-A and PE-B to allow direct communication between CE-A and CE-B?

Options:

A.

PE-A will require a SAP id of "sap 1/1/1:200" and PE-B will require a SAP id of "sap 1/1/1:300.

B.

PE-A will require a SAP id of "sap 1/1/1" and PE-B will require a SAP id of "sap 1/1/1".

C.

PE-A will require a SAP id of "sap 1/1/1:0" and PE-B will require a SAP id of "sap 1/1/1:0".

D.

PE-A will require a SAP id of "sap 1/1/1:*" and PE-B will require a SAP id of "sap 1/1/1:*".

Question 20

A router has just learned the 10th MAC address while the FDB size is also set to 10. What is the likely outcome?

Options:

A.

The frame is dropped.

B.

The frame is always flooded

C.

The frame is forwarded and MAC learning is automatically disabled.

D.

The frame is discarded if the destination is unknown.

E.

More information is required to determine the fate of this new frame.

Question 21

Click on the exhibit below.

Which port will become the alternate port?

Options:

A.

Bridge B 1/1/3

B.

Bridge B 1/1/2

C.

Bridge C 1/1/2

D.

Bridge C 2/1/1

E.

Bridge D 1/1/1

F.

Bridge D 1/1/3

G.

Bridge E 1/1/1

Question 22

In IEEE 802.1ag, which two key functions are configured on bridge ports (SAPs and SDPs) to support CFM messages? (Choose 2)

Options:

A.

MEP

B.

MAP

C.

MIP

D.

MUP

Question 23

How does PBB forward broadcast, unknown-unicast and multicast traffic from a B-VPLS to an l-VPLS?

Options:

A.

The receiving PE checks the l-TAG in the l-SID to determine if there is a local l-VPLS on the node.

B.

The receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.

C.

The receiving PE checks the service label in the mpls header to determine if there is a local l-VPLS on the node.

D.

The receiving PE checks the multicast B-DA to see if an l-SID has been mapped to the B-DA that matches a local l-VPLS on the node.

Demo: 23 questions
Total 156 questions