Question 1

If a management VPLS is administratively disabled what will be the status of the associated user VPLS SAPs?

Options :

A : Regular semantics will apply. It will be as if the SAP doesn't belong to a management VPLS.

B : All user VPLS SAPs will be disabled/pruned

C : It is not possible to administratively disable a management VPLS

D : Spanning tree will be automatically enabled on the user VPLS SAPs.

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

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 4

Consider a large metro-to-metro VPLS network interconnected with a mesh of mesh-SDPs. Which of the following statements does NOT apply to this situation?

Options :

A : Bandwidth and replication inefficiency can occur on inter-metro links if there is a lot of multicast traffic

B : The number of control sessions grows exponentially in a fully meshed network

C : Spanning-tree is required to prevent loops when using mesh SDPs on the inter-metro links.

D : Network touches increase with each node added to the mesh.

Answer: C

Question 5

Which of the following statements is false?

Options :

A : VPLS is a bridged LAN service

B : VPLS provides L2 VPN services to CEs

C : VPLS is a point-to-point service where CEs are presented with point-to-point virtual circuits.

D : CEs that are members of the same VPLS service instance communicate with each other as if they are connected via a bridged LAN.

Answer: C

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