Question 1

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 Alcatel-Lucent 7750 SR.

Answer: B

Question 2

What is the MTU impact on the SDP path-mtu if fast reroute facilities-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.

Answer: B

Question 3

Which of the following needs to be considered when designing Ethernet networks with redundancy?

Options :

A : Processing the TTL takes extra time

B : MAC learning rate is doubled.

C : FDB size is doubled

D : Requires a protocol to remove loops

Answer: D

Question 4

How is the Primary Bridge chosen in a VPLS?

Options :

A : The PE devices participating in the VPLS mesh run a separate Spanning Tree instance in the Core. The Primary Bridge is the Root Bridge for the VPLS mesh.

B : The PE devices participating in the VPLS mesh determine which bridge is closest to Root Bridge. This bridge becomes the Primary Bridge.

C : The PE devices participating in the VPLS mesh determine which bridge has the lowest bridge-id. This bridge becomes the Primary Bridge.

D : The PE devices participating in the VPLS mesh determine which bridge is the Root Bridge. This becomes the Primary Bridge.

Answer: B

Question 5

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

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