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Huawei HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching) Sample Questions:

1. As shown in the figure, three switches SW1, SW2 and SW3, where SW1 is the root bridge, the link between SW1 and SW2 is congested, and SW2 cannot receive the configuration BPDU sent by the root bridge. Which spanning tree protection mechanism does the administrator need to configure to prevent link congestion?

A) Root protection
B) TC-BPDU protection
C) Loop protection
D) BPDU protection

2. What are the differences between traffic policing and traffic shaping? (Multiple Choice)

A) For traffic shaping, the router will buffer excess packets until the bandwidth is available again.
B) For traffic shaping, you can adjust the usage of the buffer for traffic exceeding CIR.
C) Traffic policing uses the token bucket algorithm, and traffic shaping uses the SPD algorithm.
D) Apply traffic shaping in the direction of the entrance and use traffic policing in the direction of the exit.
E) For traffic policing, you can adjust the usage of the cache for traffic exceeding CIR.

3. ISIS will elect DIS in the broadcast multi-access network. Which of the following statement about DIS is correct? (Multiple Choice)

A) In a broadcast multi-access network, the DIS sends Hello PDUs three times as often.
B) DIS guarantees database synchronization by periodically sending CSNP messages
C) ISIS elects the DIS by comparing the priorities and compares the MAC addresses if the priorities are the same.
D) DIS supports the preemption function. After the new DIS preemption is successful, you do not need to flood any LSP packets.

4. The following is about the LDP protocol session establishment process, which is the correct description?

A) After the TCP connection is successfully established, the active party sends an initialization message to negotiate the parameters related to the LDP session.
B) After both parties receive the Keepalive message from the peer, the LDP session is established successfully.
C) The Hello message discovered by the LDP neighbor uses TCP packets. The destination address is the multicast address 224.0.0.2.
D) The party with the larger transmission address acts as the active party and initiates the establishment of TCP connection.

5. Which of the following statements about the ISS protocol route aggregation is correct?

A) Route aggregation can only be configured on the level--2 router to take effect.
B) Route aggregation can only be configured on the level--1 router to take effect.
C) Route aggregation can be configured and validated on all types of routers.
D) Route aggregation can only be configured on the level--1-2 router to take effect.

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