QUESTION: 29

The MPLS label has four identification fields, Lable, EXP, S and TTL, with a total of 4 bytes, of which Lable occupies 20 bits. The label value 0-15 is reserved for special purposes, which indicates that the inner payload carried is MPLS-OAM packet. , the label value is which of the following?

0
1
3
14

Answer(s): D

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QUESTION: 30

MPLS is used to label packets instead of IP forwarding.
Which of the following descriptions about MPLS packet encapsulation are correct?

The Type field in the ETH header is set to 0x8847 to indicate that it is followed by MPLS label encapsulation
The nested encapsulation of MPLS can only be two layers, PW and Tunnel two layers of labels
The MPLS label of the Tunnel carrying the PW, where the S bit is set to 1
IP packets can be directly carried on the Tunnel

Answer(s): A,D

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QUESTION: 31

The STAT indicator of the N1SLQ16 board is on red.
What are the possible reasons for the following?

Board hardware failure
Hardware mismatch
The board software is lost
There is an optical port without an optical module

Answer(s): A,B,D

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QUESTION: 32

NE1 and NE2 are the intersection nodes of the SNCP ring and the SNCP ring, so how many SNCP protection groups and how many unidirectional cross-connects need to be configured on NE1.
Which of the following is correct?

4,4
4,2
2,2
2,4

Answer(s): C

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QUESTION: 32

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