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Question 1

A router receives an OSPF database description packet from a neighbor that references an LSA, which is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence number of the LSA in the LSDB.

What action does the router take?

Options :

A : The router sends a link-state update to its neighbor.

B : The router sends a link-state update to its neighbor.

C : The router updates the information in its LSDB with the information received from its neighbor.

D : The router sends a link-state request to its neighbor.

E : The router takes no action.

Answer: A

Question 2

What are the default Hello and Dead timer intervals for OSPF on the Nokia 7750 SR?

Options :

A : 5 and 15 seconds

B : 10 and 30 seconds

C : 5 and 20 seconds

D : 10 and 40 seconds

Answer: D

Question 3

Click the exhibit button.

Given the topology and the show commands, and assuming that router R2 advertises all of its loopbacks into OSPF, what is the correct router R1 configuration?

Options :

A :

B :

C :

D :

Answer: A

Question 4

Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?

Options :

A : IP packets sent to an IP multicast address.

B : TCP packets sent to an IP multicast address.

C : IP packets sent to an IP unicast address.

D : UDP packets sent to an IP multicast address.

Answer: A

Question 5

Identify two attributes of Distance Vector Protocols: (Choose two)

Options :

A : Use split horizon by default.

B : Send information about directly connected links to neighbors at periodic intervals.

C : Use holddown timers when topologies change to allow for convergence.

D : Maintain multiple databases: neighbor, topology and routing.

Answer: A,C