Nokia Exam 4A0-100 Topic 7 Question 95 Discussion

Actual exam question for Nokia's 4A0-100 exam

Question #: 95
Topic #: 7

Which of the following are correct statements about MPLS labels (Choose three.)?

AA series of labels from one LER to another LER represent a logical tunnel known as an LSP.

BLabels used for a LSP may be static but are usually signaled dynamically with an MPLS label signaling protocol.

CLabels are locally significant to the MPLS router which means its possible for two routers on the LSP path to use the same label.

DLabels are globally significant to the MPLS network which means all labels on the LSP path must be unique.

ELabels used for an LSP must be statically assigned by the service provider.

Show Suggested Answer

Suggested Answer: D

by Merlyn at Aug 23, 2024, 04:20 PM

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Lettie

3 days ago

Hmm, let's see... A, B, and C. Wait, no, D too. Labels must be unique across the MPLS network, not locally significant. I guess my MPLS knowledge is a bit rusty, time to hit the books again.

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B, C, and D are correct. Labels are usually signaled dynamically, can be reused on different routers, and must be unique across the MPLS network. I'm glad they didn't ask about MPLS traffic engineering, that's a whole other can of worms!

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