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Huawei HCIE-Routing & Switching (Written) V3.0 Sample Questions:

1. Although the STP protocol can solve the loop problem, the slow convergence of the network topology affects the user's communication quality. RSTP has made many improvements to STP. Which of the following is not an improvement of RSTP to STP?

A) RSTP deletes 3 port states and adds 2 new port roles
B) RSTP's port state specifications are divided according to whether the port forwards user traffic and learns MAC addresses, reducing the original five port states to three
C) The non-root switch running RSTP sends configuration BPDUs at the interval specified by the Hello Timer. This behavior is completely performed by each device independently
D) If a port does not receive the configuration BPDU sent by the upstream device within 4 consecutive Hello Time, the device considers that the negotiation with this neighbor has failed

2. What is wrong about the description of RP in PIM-SM?

A) One RP can serve multiple multicast groups at the same time, and one multicast group can correspond to multiple RPs
B) The initial multicast stream of all groups in the shared tree is forwarded to the receiver through the RP
C) All members of the group and multicast sources sending multicast data to the group converge to a unique RP
D) RP can be responsible for the forwarding of several or all multicast groups, and there can be one RP in the network

3. In order to allow the routers at both ends of the IPv6 over IPv4 manual tunnel to exchange routing information, OSPFv3 can be enabled on the tunnel. OSPFv3 will be able to form a neighbor relationship normally, and the tunnel interface will be treated as a P2P link interface.

A) TRUE
B) FALSE

4. A router running IS-IS, and its output information is as shown in the figure. Which of the following statements is correct?

A) The circuit-level of S4/0/0 is Level-1
B) The Cost value of the S4/0/0 interface is 20
C) S4/0/0 interface supports IPv6
D) The period of sending IIH on the S4/0/0 interface is 30s

5. Generally, VPN users can only communicate with each other, not communicate with Internet users, cannot access the Internet. But VPR respective site may have access to the need of Internet. Which of the following description about VPN and Internet implementations is correct? (Multiple choice)

A) It is implemented on the user side, the implementation method is simple, the public network and the private network route are isolated, and it is safe and reliable.
B) Implemented on PE. The PE device sends a default route to the Internet to the CE, and adds a default route to the VPN instance routing table to point to the Internet gateway.
C) Implemented on the user side, directly connect the CE to the Internet. Each user site can be individually connected to the Internet. That is, the CE of each site is configured to the default route of the Internet.
D) In the PE, realization is complex, and there are security risks, PE equipment may be subject to Internet of Dos political strike.

Solutions: