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Huawei H12-821_V1.0-ENU Exam Syllabus Topics:

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:

1. VLAN Pool has two algorithms for allocating VLANs, namely sequential allocation and HASH allocation.
Which of the following descriptions of these two algorithms are correct? (Multiple choice)

A) When the sequential allocation algorithm is set, IP addresses may change when users go online or offline.
B) When the HASH allocation algorithm is set, VLAN changes will not occur when users go online and offline.
C) When the HASH allocation algorithm is set, it may lead to uneven division of users between VLANs.
D) When the sequential allocation algorithm is set, VLAN changes may occur when users go online and offline.

2. The header of an IP packet is shown in the figure. Based on this packet, which of the following is correct?

A) The protocol number is 51, which means that the message after the IP Header is the ESP header
B) The message is an IPsec VPI message, and the data part of the message is encrypted
C) The protocol number is 51, which means that the message after the IP Header is the AH header
D) The packet must be an IPsec VPN packet encapsulated with only AH

3. Please compress the address 2001:0DB8:0000:C030:0000:0000:09A0:CDEF. ()

4. Which of the following descriptions about the application of RPF in multicast data forwarding is incorrect?

A) When the router receives a multicast message, it first checks the source address of the message, and then selects an optimal route based on the priority of the routing source. The outbound interface of this route is the RPF interface.
B) During the multicast data forwarding process, the multicast router will perform an RPF check on each received multicast data packet through the unicast routing table.
C) If the RPF check fails, it indicates that the source path of the packet is wrong and the packet will be discarded.
D) The router will compare the incoming interface of the packet with the RPF interface of the RPF route. If they are consistent, the RPF check passes, indicating that the source path of the packet is correct and it will be forwarded downstream.

5. The networking diagram of a certain IS-IS is as shown in the figure. According to the content analysis in the figure, which one of the following descriptions is wrong?

A) The LSDB of Level-2 of the R6 device only contains the routing information of this area.
B) R1 can access R4 through R2 or R3
C) The LSDB of Level-1 of the R1 device only contains the routing information of this area.
D) R2 and R1 form a Level-1 adjacency relationship, and R2 and R4 form a Level-2 adjacency relationship.

Solutions: