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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?

A.

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

B.

The router sends a link-state acknowledgement 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.

In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?

A.

Not so stubby area

B.

Stub area

C.

Backbone area

D.

Normal area

What is the protocol number for OSPF in the IP header?

A.

OSPF uses TCP, so the protocol number is 6.

B.

OSPF uses UDP, so the protocol number is 17.

C.

OSPF does not use IP.

D.

OSPF has its own protocol number of 89.

Select the answer below that correctly lists the 5 different OSPF packet types.

A.

Hello, Link State Update, Link State Packet, Link State Acknowledgement, Database Descriptor

B.

Link State Update, Link State Refresh, Link State Acknowledgement, Database Descriptor, Notification

C.

Hello, Link State Refresh, Link State Update, Link State Acknowledgement, Link State Authentication

D.

Hello, Link State Update, Link State Request, Link State Acknowledgement, Database Descriptor

Which of the following OSPFv3 LSAs have an AS scope?

A.

Link Local LSA

B.

Router LSA

C.

Network LSA

D.

Inter-Area Router LSA

E.

Intra-Area Prefix LSA

F.

None of the above LSAs have an AS scope.

NSSA LSA packets are what type within an NSSA area, and are converted to what other type at the ABR?

A.

They are type 7 within the area and are not modified at the ABR

B.

They are type 5 within the area and converted to type 3 at the ABR

C.

They are type 5 within the area and are not modified at the ABR

D.

They are type 7 within the area and converted to type 5 at the ABR

What address is used when RIPv2 uses multicast to send its updates?

A.

224.0.0.5

B.

224.0.0.6

C.

224.0.0.9

D.

224.0.0.10

E.

RIPv2 does not have support for multicast

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

A.

5 and 15 seconds

B.

10 and 30 seconds

C.

5 and 20 seconds

D.

10 and 40 seconds

Which of the following statements describe the major features of OSPF? Choose two answers.

A.

Fast reroute capability

B.

Control traffic prioritization

C.

Route redistribution

D.

Traffic engineering extensions

E.

Cut through forwarding

What is the source IP address in an OSPF update?

A.

224.0.0.5

B.

224.0.0.6

C.

The unicast IP address of the interface the update is sent on

D.

The system address of the router.