Alcatel-Lucent 4A0-105 Dumps PDF Free Download

QUESTION: 26

What scaling factors should a network engineer be aware of when designing VPLS networks? (Choose three.)

Control plane scaling.
Data plane scaling.
Network touches.
Route table reduction.
OAM tools.

Answer(s): A,B,C

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QUESTION: 27

When a PE node receives a PBB encapsulated frame on a B-VPLS, how does the PE determine which l-VPLS it belongs to?

The l-TAG in the l-SID is inspected to determine where the frame should be delivered.
When the B-MAC header is stripped the customer MAC address is then looked up in the FDB
The l-SID in the l-TAG is inspected to determine where the frame should be delivered.
The PE inspects the service label in the MPLS header before stripping the B-MAC header.

Answer(s): C

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QUESTION: 28

Click on the exhibit below.

How many LSPs are required in total between Metro A and Metro B if 100 hierarchical VPLS services are deployed across the two metro networks?

100
200
1
2

Answer(s): D

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QUESTION: 29

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?

There is no effect. The MAC addresses for the l-VPLS age out independently of the aging of B-VPLS addresses.
The MAC addresses for the l-VPLS will age out immediately following the remote-age out of the backbone-macs of the B-VPLS.
By default, the remote-age timer of the B-VPLS is configured to 0 and addresses do not age out. The l-VPLS uses its own timer.
The same timer is used for B-VPLS and l-VPLS addresses on the node.

Answer(s): B

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