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Questions # 1:

Click on the exhibit below.

Question # 1

CE-A is on VLAN 200 and CE-B is on VLAN 300. Which of the following SAP ids can be configured on PE-A and PE-B to allow direct communication between CE-A and CE-B?

Options:
A.

PE-A will require a SAP id of "sap 1/1/1:200" and PE-B will require a SAP id of "sap 1/1/1:300.

B.

PE-A will require a SAP id of "sap 1/1/1" and PE-B will require a SAP id of "sap 1/1/1".

C.

PE-A will require a SAP id of "sap 1/1/1:0" and PE-B will require a SAP id of "sap 1/1/1:0".

D.

PE-A will require a SAP id of "sap 1/1/1:*" and PE-B will require a SAP id of "sap 1/1/1:*".

Questions # 2:

Click on the exhibit below.

Question # 2

CE-A sends frames with 2 tags. If the SAP on PE-A is "sap 1/1/1:1 .*" and the SAP on PE-B is "sap 1/1/1:100.200" how many tags will there be on the frame when it egresses from the SAP on PE-B?

Options:
A.

0

B.

1

C.

2

D.

3

Questions # 3:

An l-VPLS is configured with a service id of 511. What will the value of the l-SID be assuming a default configuration?

Options:
A.

The 1-SID must be explicitly configured.

B.

The 1-SID only supports a range from 1 to 255.

C.

The 1-SID will default to 511 .the value of the service-id.

D.

Thel"SIDwilldefaultto131582, the value of the service-id + 131071.

Questions # 4:

Which of the following are required for an operational mesh-sdp binding for bidirectional traffic when signaling is enabled within the SDP? (Choose 3)

Options:
A.

LDP must be enabled.

B.

RSVP must be enabled.

C.

An SDP must be configured on the far-end.

D.

Service MTU must match.

E.

SDP ID must match.

Questions # 5:

Which failure scenario is NOT supported by IEEE 802.lag?

Options:
A.

Loss of connectivity.

B.

Unidirectional Loss.

C.

Loop detection.

D.

Merged Services.

E.

End-to-end bit error rates.

Questions # 6:

Click on the exhibit below.

Question # 6

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.

Questions # 7:

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.

Questions # 8:

In RSTP, how is the root bridge selected?

Options:
A.

The switch with the highest bridge-id is selected as root.

B.

The switch with the lowest bridge-id is selected as root.

C.

The switch with the highest MAC address is selected as root

D.

The switch with the lowest MAC address is selected as root.

Questions # 9:

What function in IEEE 802.1 ah helps to limit the amount of MAC addresses learned in the core?

Options:
A.

I-VPLS is configured in the core of the network with an l-MAC address. This l-MAC address is the only MAC learned in the core

B.

The B-VPLS and l-VPLS are configured in the edge. The B-VPLS is configured with a Backbone MAC and is the only MAC learned in the core

C.

Each SDP is configured with a Backbone MAC to hide customer MAC addresses in the core

D.

Each SAP is associated with a common l-MAC to hide customer MAC addresses in the core

Questions # 10:

Which of the following are true when ports are configured with the IEEE 802.3ah Loopback Control feature? (Choose 3)

Options:
A.

The loopback control PDU instructs the remote port to enter loopback mode.

B.

Putting a port in loopback does not affect customer data flow

C.

Both ports must rediscover the OAM capabilities of each other once the port is put back into service.

D.

Both ports must still send Information PDUs to avoid going back to discovery mode.

E.

When a port is in loopback mode, service mirroring will still work if it is a mirror-source or mirror-destination.

F.

All packets, except for information PDUs, are looped back.

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