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  5. Nokia NRS II Composite Exam: OSPF version Questions and Answers

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Viewing questions 41-50 out of questions
Questions # 41:

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

Options:
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.

Questions # 42:

Click on the exhibit.

Question # 42

When router R1 forwards a PATH message to router R2, which of the following about the PATH message's IP header is TRUE?

Options:
A.

The options field is set to router alert.

B.

The source address is R1's egress interface address.

C.

The destination address is R2's ingress interface address.

D.

The HOP object includes R2's system address.

Questions # 43:

Click on the exhibit.

Question # 43

LSP 1's link between routers R3 and R6 has failed, and the RESV state at router R3 has timed out. Which of the following actions will router R3 initiate?

Options:
A.

Send a PathTear message towards router R6.

B.

Send a PathTear message towards router R1.

C.

Send a ResvTear message toward router R6.

D.

Send a ResvTear message toward router R1.

Questions # 44:

If an Nokia 7750 SR is an iLER operating in pipe mode, which of the following regarding the TC field (EXP bits) is TRUE?

Options:
A.

The TC field is set based on the value of the DSCP field inside the customer packet.

B.

The TC field is set to a specific value via explicit administrative configuration.

C.

The TC field is set to a system generated random number.

D.

The TC field is set by the eLER.

Questions # 45:

An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?

Options:
A.

The link state information is not populated in the database but is forwarded to all neighbors

B.

The link state information already in the database is overwritten and the age is reset

C.

The link state information is not populated in the database and an acknowledgement is sent

D.

The link state information is regarded as old and nothing is done.

Questions # 46:

Which of the following devices assumes the active role during the establishment of an LDP session?

Options:
A.

The peer with the higher physical address.

B.

The peer with the higher transport address.

C.

The peer with the lower physical address.

D.

The peer with the lower transport address.

E.

The peer that generated the first Hello message.

Questions # 47:

In an OSPF Hello packet what fields must match all neighbor routers on the segment? (Choose 3)

Options:
A.

Area ID

B.

Hello and Dead Intervals

C.

Stub flag

D.

DR and BDR addresses

E.

The list of neighbors

Questions # 48:

Which of the following statements best describes an OSPF type 3 LSA?

Options:
A.

An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.

B.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.

C.

An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.

D.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.

Questions # 49:

Click the exhibit.

Question # 49

AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "as-set" enabled. Which of the following is TRUE regarding the aggregate route received by router R7?

Options:
A.

The AS Path is set to 65540, and the Atomic Aggregate flag is set.

B.

The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.

C.

The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.

D.

The AS Path is set to 65550, and the Atomic Aggregate flag is not set.

Questions # 50:

What class of attribute is Originator_ID?

Options:
A.

Well-known mandatory.

B.

Well-known discretionary.

C.

Optional transitive.

D.

Optional non-transitive.

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