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

1. As shown in the figure, the MP-BGP neighbor relationship is established between PE1 and PE2 through Loopback 0 interface. After the configuration is completed, it is found that CE1 and CE2 cannot learn the path from each other. Which of the following options will cause this problem? (Multiple choice)

A) The VPN instance parameter configuration on PE1 or PE2 is incorrect
B) PE1 or PE2 is not enabled with neighbors in BGP-VPNv4 unicast address family view
C) The routing protocol configuration between PE1 or PE2 and the respective CE is incorrect
D) The LSP tunnel between PE1 and PE2 is not established

2. If running PIM-SM on a multicast network, you need to construct a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive multicast data. Which of the following description about the constructed multicast forwarding tree is correct? (Multiple Choice)

A) The RPT tree is built between the multicast source and the RP.
B) The SPT tree is built between the RP and the receiver.
C) The SPT tree is built between the multicast source and the RP.
D) The RTP tree is built between the RP and the receiver.

3. What are the benefits of OSPF area division? (Multiple choice)

A) Routers in an area can understand the topology details outside their area
B) LSA can also be reduced with the division of areas, reducing the consumption of router CPU
C) It can reduce the size of LSDB and thus reduce the consumption of router memory
D) A large number of LSA flooding is restricted to a single area

4. Regarding the description of the label encapsulation format in MPLS, which is correct? (Multiple questions)

A) For Ethernet and PPP packets, the label stack is like a "cushion", located between the Layer 2 header and the data. When there is a VLAN tag, the MPLS header is placed between the Ethernet header and the VLAN tag.
B) The S field in the label, 1bit is used to identify whether the label is the bottom label of the stack, when the value is 1, it indicates the second-to-last label
C) The total length of a single MPLS label is 4 bytes (32 bits)
D) The TTL field in the label is similar to the TTL (Time To Live) in the IP packet, and it also has the effect of preventing loops.

5. Which of the following operations can implement fast fault detection on multicast network? (Multiple choice)

A) Establishing PIM BFD session between neighbors
B) Reduce the interval for sending Join/Prune messages.
C) Reduce the interval at which the interface sends Hello messages.
D) Shorten the Holdtime of Join/Prune messages

Solutions: