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Which of the following must be true in order to add a port to a LAG? (Choose 2)

A.

ports must be on the same MDA

B.

ports must have the same speed and duplex settings

C.

auto negotiation must be on

D.

auto negotiation must be off or limited

E.

port must be in access mode only

The following question relates to this command syntax: "config>service# vpls 9000 customer 6 create". Which of the following statements are correct? (Choose 2)

A.

The customer-id in this command is 9000.

B.

The service-id in this command is 9000.

C.

This value 9000 should be unique across the network as a best practice.

D.

The vc-id will be 6 for the service by default.

E.

The egress vc-label will be 9000.

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

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,

How is the Primary Bridge chosen in a VPLS?

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.

Redundant spoke-SDPs are used between 2 Metro networks for redundancy. How can load balancing be achieved across the redundant spoke-SDPs?

A.

A single management VPLS using RSTP can be used to block different SDPs for different VPLS services.

B.

A single management VPLS using 802.1D-2004 can be used to block different SDPs for different VPLS services

C.

There is no way to have load balancing across redundant spoke-SDPs.

D.

Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.

Which of the following statements is false?

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.

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

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.

Click on the exhibit below.

Which bridge will become the root bridge?

A.

Bridge B

B.

Bridge C

C.

Bridge D

D.

Bridge E

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?

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.

Why is MAC explosion a factor to be considered when designing a large VPLS network? (Choose 2)

A.

The time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.

B.

If the FDB reaches the limit, the router will discard frames.

C.

Discarding frames when the FDB limit is reached could deny SLA guarantees.

D.

It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.