Huawei HCIE-Datacom V1.0 H12-891_V1.0 Question # 18 Topic 2 Discussion

Huawei HCIE-Datacom V1.0 H12-891_V1.0 Question # 18 Topic 2 Discussion

H12-891_V1.0 Exam Topic 2 Question 18 Discussion:
Question #: 18
Topic #: 2

A 32-bit MPLS header consists of a 20-bit label used for packet forwarding, a 3-bit EXP field that identifies the IP packet priority, a 1-bit bottom-of-stack flag that identifies the last label, and an 8-bit TTL field. Which statement regarding the TTL field is correct?


A.

This field is used to control the upstream device in label distribution.


B.

This field is used for label management.


C.

This field limits the LSR.


D.

This field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.


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