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Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Sample Questions:

1. In an HPLS network, when a transit device receives an MPLS message and prepares to perform label switching, it finds that the label value after switching is 0. Which of the following operations will it perform?

A) Push label 0 into the outer label of the MPLS packet and forward the MPLS packet carrying two layers of labels to the next hop
B) Exchange label 0 with the original label in the MPLS message and forward the message to the next hop
C) Pop the label in the MPLS message and forward the message to the next hop
D) Do not process the label and directly forward the message to the next hop

2. MPLS determines the upstream and downstream relationship based on the data forwarding direction. The MPLS label message is sent from the upstream LSR and received and processed by the downstream LSR. Similarly, the release of MPLS labels is also distributed one by one from upstream to downstream.

A) False
B) True

3. The Route-LSA generated by a router is shown in the figure. Which of the following descriptions are correct? (Multiple choice)

A) The router belongs to the stub area
B) The router is an ABR
C) The router is the DR of the local link
D) Other routers can forward IPv6 traffic through this router

4. An enterprise enables BFD for OSPF on Huawei devices to achieve sub-second convergence.
After enabling BFD, OSPF sessions begin to flap frequently. Which parameter should be adjusted first to improve stability?

A) OSPF interface cost
B) LSA refresh timer
C) BFD detection multiplier or interval
D) OSPF area type

5. MPLS supports multi-layer label nesting. When the device receives an MPLS message, it will first process the label close to the second-layer header, that is, the MPLS label at the top of the stack.

A) False
B) True

Solutions: