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Questions # 21:

What is the SA in the Ethernet frame used for by a layer 2 switch?

Options:
A.

MAC learning

B.

SA filtering

C.

Routing table population

D.

Frame forwarding

Questions # 22:

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.

Questions # 23:

If the command "disable-learning" has been added at the VPLS level, then MAC entries which have already been learned will not be aged.

Options:
A.

TRUE

B.

FALSE

Questions # 24:

In the IEEE 802.1 ag, how are merged services detected?

Options:
A.

The MEP sees the CFM frame from a different MEG.

B.

The MEP sees a different service-id in the frame sent by a MEP.

C.

The MIP transmits the service-id for each service. The MIP should only see it's own service-id.

D.

This is a function of 802,3ah EFM,

Questions # 25:

Click on the exhibit below.

Question # 25

If the SDP between R2 and R1 goes down, what devices will be reachable from R2 through the VPLS?

Options:
A.

Only R4 will be reachable through the VPLS.

B All devices will be reachable through the VPLS.

B.

R4 and R3 will remain reachable.

C.

No devices will be reachable.

Questions # 26:

What are the benefits of a hierarchical VPLS architecture? (Choose 3)

Options:
A.

Increases scalability

B.

Reduces the FDB size within a VPLS instance

C.

Reduces replication and bandwidth utilization from the MDU device to the core network

D.

Easier to manage

E.

Reduces the routing table size

Questions # 27:

Click on the exhibit below.

Question # 27

Assume PE-1 has a mesh-sdp configured to every PE node in both Metro networks. What could be done to prevent the bandwidth replication between Metro 1 and Metro 2?

Options:
A.

PE-1 must be configured with mesh-SDPs to every node receiving the multicast traffic. There is no way to reduce the replication or bandwidth.

B.

PE nodes in Metro 1 could be configured with mesh-SDPs. PE nodes in Metro 2 would be configured with mesh-SDPs. However, the connection between Metro networks (PE-2 to PE-6) can be configured with a spoke-sdp. This would reduce the replication and bandwidth used on the link between Metro networks. This also reduces the replication required by PE-1.

C.

PE-1 can be configured with spoke-SDPs to every PE node in both Metro networks. This will reduce the bandwidth and replication within the network.

D.

PE nodes in Metro 1 could be configured with spoke-SDPs. PE nodes in Metro 2 would be configured with spoke-SDPs. However, the connection between Metro networks (PE-2 to PE-6) can be configured with a mesh-sdp. This would reduce the replication and bandwidth used on the link between Metro networks. This also reduces the replication required by PE-1.

Questions # 28:

Which protocol is used to signal the status of the active links between the PE and the CE in MC-LAG?

Options:
A.

MSTP

B.

MCLAG

C.

LACP

D.

DHCP

E.

A proprietary protocol

Questions # 29:

Click on the exhibit below.

Question # 29

A new site is added to PE-D of Metro B. Which of the following statement below is true?

Options:
A.

If a spoke-SDP is configured between the new site and PE-D no further SDPs will be required.

B.

If a mesh- SDP is configured between the new site and PE-D no further SDPs will be required.

C.

A mesh- SDP must be configured between the new site and all other PEs within Metro B.

D.

A spoke- SDP must be configured between the new site and all other PEs within Metro B.

Questions # 30:

Fill in the blank for this next sentence. Flooded traffic received on any ____________ in the service is replicated to other spoke SDPs and SAPs and not transmitted on any mesh SDPs.

Options:
A.

Spoke SDP

B.

Mesh SDP

C.

Either (a) or (b) will make this sentence true.

D.

Neither (a) nor (b) will make this sentence true.

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