Question 1

If the max remote-age timer of a B-VPLS is reached, what happens to the remotely learned MAC addresses in the l-VPLS service?

Options :

A : There is no effect. The MAC addresses for the l-VPLS age out independently of the aging of B-VPLS addresses

B : The MAC addresses for the l-VPLS will age out immediately following the remote-age out of the backbonemacs of the B-VPLS

C : By default, the remote-age timer of the B-VPLS is configured to 0 and addresses do not age out. The lVPLS uses its own timer.

D : The same timer is used for B-VPLS and l-VPLS addresses on the node.

Answer: B

Question 2

Click on the exhibit below.

A new router named PE-D is to be directly connected to PE-C and is required to be added to the existing VPLS

300. The design requires the least amount of signaling, the least amount of configuration changes for existing

sites and the new site has to have access to all existing sites. How should the new site be added to VPLS 300?

Options :

A : Configure a mesh-sdp between all existing PE routers and the new PE router

B : Configure a mesh-sdp between PE-C and PE-D

C : Configure a spoke-sdp between PE-C and PE-D.

D : It is not possible to meet the design requirements.

Answer: C

Question 3

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.

Answer: D

Question 4

How is it possible for multiple services to be carried over the same MPLS LSPs?

Options :

A : Multiple SDPs must be configured and bound to the LSPs for this to be possible.

B : It is not possible to carry multiple services over the same MPLS LSPs.

C : A vc-label is signaled per service.

D : The vc-id is part of the data plane and maps the traffic to the appropriate service.

Answer: A

Question 5

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.

Answer: C