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Nokia 4A0-105 - Nokia Virtual Private LAN Services

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Total 156 questions

Click on the exhibit below.

The SAP on PE-A has been configured with dot1q encapsulation. The SAP on PE-B has been configured with qinq encapsulation. CE-A sends frames with a single tag of 100. The VLAN tag from CE-A must be passed transparently. CE-B is expecting a frame with a top tag of 200 and bottom tag of 100. Which of the following is the correct SAP id for PE-B?

A.

sap 1/1/1:200.100

B.

sap 1/1/1:200*

C.

sap 1/1/1:*

D.

sap 1/1/1:0*

Which of the following describes the overhead added to a customer frame on an Ethernet link in a VPLS service on the Nokia 7750 SR?

A.

The overhead consists of 26 bytes. 14 DLC + 2 Ethertype + 8 for mpls labels + 2 for GRE

B.

The overhead consists of 14 bytes for DLC.

C.

The overhead consists of 18 bytes. 14 DLC +4 for mpls labels

D.

The overhead consists of 22 bytes. 14 DLC + 8 for mpls labels

Click on the exhibit below.

Assume a CE router is connected to the SAP of each PE. The arp cache of all CE routers is empty and the FDB for VPLS 300 is empty. The CE router connected to PE-A initiates a ping towards the CE router connected to PE-C. The ping is successful. Which of the following statements are true? (Choose 2)

A.

The FDB on PE-A will contain entries for all CE routers.

B.

The FDB on PE-B will contain an entry for the CE router connected to PE-A.

C.

The FDB on PE-B will contain an entry for all CE routers.

D.

The FDB on PE-C will contain entries for the CE router connected to PE-A and the CE router connected to PE-C.

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

A.

The same as the number of alternate ports in the topology

B.

1 per segment

C.

The same as the number of root ports

D.

1 per switch

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

A.

SDP id

B.

Service ID

C.

VC Label

D.

Tunnel Label

E.

Customer id

The command "send flush-on-failure" has been enabled within a VPLS instance. What does the PE do upon detection of a SAP failure within the VPLS?

A.

The PE sends an LDP control message that flushes all FDB entries in the VPLS instance.

B.

The PE sends an LDP control message that flushes all FDB entries in the VPLS instance that are associated with the PE that detected the failure.

C.

The PE flushes it's local FDB only.

D.

The PE sends an oam service message that flushes all FDB entries in the VPLS instance.