Alcatel Lucent Multiprotocol Label Switching

1.

Which of the following is NOT an advantage of MPLS shortcuts for BGP traffic?

It makes use of MPLS resiliency features available within an AS. It eliminates double route lookups on all routers within an AS. It eliminates the need to run IGP on all routers within an AS. It eliminates the need for an iBGP full mesh on all core routers.

2.

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?

0x4 0x5 0x10 0xa

3.

Which of the following about an LSP protected with one-to-one FRR is TRUE?

The LSP can use facility and one-to-one FRR simultaneously. The LSP is limited to node protection. A single protection tunnel is used for all LSPs with the same path. A detour protection tunnel is created for the LSP.

4.

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

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.

5.

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

Label swapping Pushing a label on an unlabeled packet Label allocation Routing lookups

6.

Which of the following best describes downstream unsolicited label distribution?

An LSR may answer requests for label mappings immediately, without waiting for a label mapping from the next-hop. An LSR may advertise label mappings to all peers for which it might be a next-hop for a given FEC. An LSR propagates a label mapping downstream for a FEC, only if it has a label mapping for the FEC next-hop. An LSR will only distribute a label for a FEC when it has been requested to do so.

7.

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.

Liberal label retention mode Conservative label retention mode Ordered control mode Independent control mode

8.

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

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.

9.

Which of the following LDP settings can be changed with CLI?

Label space mode Label retention Control mode Keepalive factor

10.

Which of the following about an established LDP session is TRUE?

It uses a UDP connection with an arbitrary port number. It uses a UDP connection with well-known port number 646. It uses a TCP connection with an arbitrary port number. It uses a TCP connection with well-known port number 646.

Alcatel Lucent Multiprotocol Label Switching

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Alcatel Lucent Multiprotocol Label Switching

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