Question 1

Which of the following is TRUE when the explicit null is implemented?

Options :

A : The penultimate router will forward packets to the eLER, based on the IP header.

B : The eLER will receive packets with a top label value of 0.

C : The eLER will receive packets with a top label value of 3.

D : The penultimate router will pop the top label from the packets.

Answer: B

Question 2

Click the exhibit button.

The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?

Options :

A : The adjacency state is two way because both routers have received a database description packet.

B : The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.

C : The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.

D : The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.

Answer: C

Question 3

How is the aggregator attribute handled with 32-bit AS numbers?

Options :

A : With the same method and attribute as 16-bit AS numbers.

B : With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

C : Aggregation is not yet supported with 32-bit AS numbers.

D : By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTLV.

Answer: B

Question 4

Click on the exhibit.

If the primary path fails, which backup LSP path will the head-end router pick first?

Options :

A : The Standby with the highest next-hop IP.

B : The first Standby in the list.

C : The Standby with the longest uptime.

D : The Standby with the lowest next-hop IP.

Answer: C

Question 5

A static route is created using the command 'static-route 0.0.0.0/0 next-hop 3.3.3.1'. What command could be used to test the static route on an Nokia 7750 SR?

Options :

A : Ping static 3.3.3.1

B : Ping static 0.0.0.0/0

C : Ping 3.3.3.1

D : Ping 0.0.0.0

Answer: C

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