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4A0-103
Alcatel-Lucent Multi Protocol Label Switching Questions and Answers

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Questions # 1:

Which of the following about RSVP refresh reduction on a Alcatel-Lucent 7750 SR is FALSE?

Options:

RSVP generates a summary refresh message for each LSP.

Message-IDs replace individual refresh messages.

An LSP state change causes the Message-ID to be incremented.

RSVP refresh reduction is disabled by default.

Answer

Questions # 2:

Which of the following about RSVP-TE LSP configuration in a Alcatel-Lucent 7750 SR is TRUE?

Options:

LSPs must always terminate on a system ID.

MPLS and RSVP must be enabled on all LSRs.

CSPF must be enabled.

Path definitions must include at least one hop entry.

Answer

Questions # 3:

What MPLS function should be performed by a router that receives a data packet with an MPLS label value of 0?

Options:

Push an additional label onto the label stack.

Pop the label.

Swap the label.

Pop the label and push an additional label onto the label stack.

Answer

Questions # 4:

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.

Answer

Questions # 5:

Click on the exhibit.

Question # 5

A fully loose LSP "toR6" is enabled with FRR protection. All links have the same cost. After the link between R2 and R4 goes down, FRR protection repairs the LSP and traffic traverses on R1-R2-R7-R8-R4-R6. Which of the following about this CSPF-enabled LSP on an Alcatel-Lucent 7750 SR is TRUE?

Options:

The LSP will stay on the current path indefinitely unless another failure occurs.

The LSP will stay on the current path until the resignal timer expires.

The LSP will switchover to R1-R2-R3-R5-R6 after the resignal timer expires.

The LSP will switchover to R1-R3-R5-R6 after the retry timer expires.

Answer

Questions # 6:

Click on the exhibit.

Question # 6

An LSP's primary path takes R1-R3-R5-R6. Its fully loose secondary path is configured for SRLG. All links are of equal cost. Which path will the secondary path take?

Options:

The secondary path will take R1-R3-R2-R4-R6.

The secondary path will take R1-R2-R4-R6.

The secondary path will take R1-R2-R3-R5-R6.

The secondary path will take R1-R3-R2-R4-R5-R6.

Answer

Questions # 7:

A router has two admin groups defined (GREEN=1 and RED=3). An interface is associated to both admin groups. What value will be shown in the Admin Group sub-TLV for this interface?

Options:

0x4

0x5

0x10

0xa

Answer

Questions # 8:

Click on the exhibit.

Question # 8

All links have 1 Gbps unreserved bandwidth initially. After the LSP's primary and standby secondary paths are signaled, how much bandwidth is reserved on the link between routers R1 and R2?

Options:

If Shared Explicit reservation style is used, 400Mbps is reserved.

If Shared Explicit reservation style is used, 700Mbps is reserved.

If Fixed Filter reservation style is used, 400Mbps is reserved.

If Fixed Filter reservation style is used, 300Mbps is reserved.

Answer

Questions # 9:

Which mode does the following statement describe? An LSR will advertise a label mapping immediately, without waiting for a label mapping from the FEC's next-hop.