4A0-103 무료 덤프문제 온라인 액세스

How many bits of the MPLS header are used for the label field?

• A.16
• B.25
• C.24
• D.32
• E.20

Which of the following best describes downstream unsolicited label distribution?

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

Which of the following statements regarding per-platform label space are true? Choose two answers.

• A.A single label may be assigned to an FEC and used across all interfaces of the same router.
• B.It uses more label resources than a per-interface label space.
• C.It is only valid when the LDP peers are directly connected over an interface, and the label is only going to be used for traffic sent over that interface.
• D.It uses fewer label resources than a per-interface label space.
• E.It is typically used when the device has ATM or Frame Relay interfaces.
• F.A separate label is used for each interface that the FEC is advertised on.

Click on the exhibit.

Both Path-1 and Path-2 are down. If Path-2 becomes available again, how does the headend router select the secondary LSP path?

• A.The router will switch to Path-2 because it is a more preferred path.
• B.The router will not switch to Path-2 because the router will not revert to another secondary path.
• C.The router will switch to Path-2 because it is the first secondary path configured in the list.
• D.The router will not switch to Path-2 because the current path has the longest uptime.

Which of the following is described by the following statement? An LSR propagates a label mapping only for a FEC for which it has a label mapping for the FEC next-hop.

• A.Ordered control mode
• B.Conservative label retention
• C.Downstream on demand.
• D.Independent control mode
• E.Liberal label retention