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

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

1. In BGP, when the routing policy changes, neighbors are notified through Notification messages. Only BGP devices that support route refresh capabilities will send and respond to this message.

A) TRUE
B) FALSE

2. The prefix list (IP-Prefix List) can match the IP address prefix length and mask length at the same time because it has three parameters: less-equal-value, mask-length and greater-equal-value, so which of the following can correctly describe the relationship between these three parameters?

A) less-equal-value<=mask-length<=greater-equal-value<=32
B) greater-equal-value<=less-equal-value<=mask-length<=32
C) mask-length<=greater-equal-value<=less-equal-value<=32
D) mask-length<=less-equal-value<=greater-equal-value<=32

3. In multicast, the () model provides services for bound data flows of specific sources and groups.
When the recipient host joins the multicast group, it can specify which sources to only receive data or specify to refuse to receive data from Which sources of data. After joining a multicast group, the host will only receive data sent to the group from the specified source.

4. Which of the following descriptions of the PIM-DM multicast distribution tree are correct? (Multiple choice)

A) The first formation of a multicast distribution tree mainly relies on the diffusion mechanism, pruning mechanism, assertion mechanism and DR election mechanism.
B) When maintaining the multicast distribution tree, you can continue to send multicast packets to ensure that multicast routing table entries can always exist.
C) When maintaining the multicast distribution tree, status refresh messages can be sent to ensure the upstream access of the multicast routing table entries.
D) The status does not change. The multicast distribution tree will always exist and remain unchanged after it is formed.

5. Which of the following descriptions of the Preferred-Value attribute in BGP are correct? (Multiple choice)

A) The smaller the value of this attribute, the better the route.
B) This attribute is unique to Huawei devices.
C) This attribute will be passed to IBGP peers
D) This attribute value only affects the routing preference of this device.

Solutions: