Nokia 4A0-103 Exam Questions Free Practice Test

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Questions # 31:

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Question # 31

LSP "toR8-5" requests fast reroute protection. What could be done to remove the Failure Code shown?

Options:

The LSP must be enabled with CSPF on the head-end router.

Fast reroute must be enabled on the downstream routers.

A mixture of strict and loose hops must be defined in the primary path.

CSPF and fast reroute must be enabled on all downstream routers.

Expert Solution

Questions # 32:

Which of the following is a function of the control plane in an MPLS router?

Options:

Label swapping

Pushing a label on an unlabeled packet

Label allocation

Routing lookups

Expert Solution

Questions # 33:

Which of the following modes are used by RSVP-TE on an Alcatel-Lucent 7750 SR?

Options:

Independent control mode, downstream on demand

Independent control mode, downstream unsolicited

Ordered control mode, downstream on demand

Ordered control mode, downstream unsolicited

Expert Solution

Questions # 34:

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Question # 34

An LSP traverses R1-R2-R4-R6 and facility fast reroute with link protection is enabled. All links have the same cost. Which of the following about PLRs and MPs is TRUE?

Options:

R1, R2, and R4 can be PLRs; R6 is the MP.

R1, R2, and R4 can be PLRs; R2, R4, and R6 are MPs.

R1, R2, R3, R4, and R5 can be PLRs; R6 is the MP.

R1, R2, R3. R4, and R5 can be PLRs; R2, R4, and R6 is the MP.

Expert Solution

Questions # 35:

Which of the following regarding the MPLS SWAP label operation is TRUE?

Options:

The inner label will be exchanged with the MPLS outer label.

The inner label will be exchanged for a new label.

The outer label will be exchanged for a new label.

All labels will be exchanged for one new label.

All labels will be exchanged for an equal number of new labels.

Expert Solution

Questions # 36:

Using facility mode fast reroute, how does the PLR learn the address of the MP?

Options:

The PLR issues an RSVP PATH message to the tail-end requesting the address of the MP.

The PLR learns the address of the MP from the ERO.

The PLR learns the address of the MP from the RRO.

The PLR learns the address of the MP from the targeted RSVP Hello message.

The PLR knows the address of the MP is the same as the tail-end router.

Expert Solution

Questions # 37:

Click on the exhibit.

Question # 37

Router R2 advertises the aggregate prefix 10.10.10.0/24 into Area 1. Why would LDP aggregate-prefix-match be enabled on router R3?

Options:

To reduce the number of LDP sessions

To reduce the number of LIB and LFIB entries

To bypass the LDP exact prefix match rule

To export summarized routes from OSPF to LDP

Expert Solution

Questions # 38:

Which of the following describes constraint-based routing?

Options:

A mechanism that implements opaque LSAs.

A mechanism that computes routes based on specified requirements.

A mechanism that ensures the IGP best route is used.

A mechanism that enables LDP signaling to use a route other than the IGP best route.

Expert Solution

Questions # 39:

Which of the following are functions of the MPLS control plane in a router? (Choose two)

Options:

Label allocation and management.

Label swapping.

Pushing a label on an unlabeled packet.

Label signaling.

Routing lookups.

Expert Solution

Questions # 40:

Which of the following indicates the path over which an LSP's tail end router will return an RSVP RESV message?

Options:

The IGP FIB.

The Reservation State Block (RSB)

The Path State Block (PSB)

The opaque database.

Expert Solution

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