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

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

1. Which statement about multicast packet forwarding is correct?

A) The source address of the multicast packet is a unicast address
B) The IGMP Snooping function cannot control the range of multicast traffic flooding on the Ethernet
C) The failure of the RPF check indicates that the multicast data packet is received from the suboptimal interface, but the inbound interface will still receive the multicast traffic and forward it downstream
D) In the multicast transmission mode, the destination address of the message can clarify the location of the receiver

2. In the state detection firewall, when the state detection mechanism is enabled, when the second message (SHN+ACK) of the three-way handshake reaches the firewall, if there is no corresponding session table on the firewall, then which of the following statement is correct?

A) If the firewall security policy allows the packet to pass through, the packet can pass through the firewall
B) The message must pass through the firewall and establish a session table
C) By default, after the status function is turned off, and the allow policy is configured, it can pass
D) If the firewall security policy allows the packet to pass through, create a session table

3. When the service is configured as VLANPoo1, if the user fails to obtain an IP address within a certain period of time and the dhcp update vlan assignnentthreshold command is configured, VLANPoo1 will be triggered to assign a new VLAN to the user, so that the user can obtain an IP again in the new VLAN address.

A) FALSE
B) TRUE

4. Which of the following descriptions of permanent multicast addresses is incorrect?

A) With the IGMP protocol enabled, all routers listen on 224.0.0.2.
B) When the IGMP protocol is enabled, all hosts and routers in the network segment listen to 224.0.0.1.
C) All routers running the OSPF protocol listen on 224.0.0.6.
D) All routers running the PIM multicast protocol listen on 224.0.0.13.

5. In PIM, which of the following descriptions about DR is correct? (Multiple choice)

A) PIM routers become PIM neighbors by exchanging Hello messages. The Hello messages carry the DR priority and the interface address of the network segment.
B) On the shared network segment connected to the multicast source, the DR is responsible for sending Join registration messages to the RP. The DR connected to the multicast source is called the source DR.
C) If the current DR fails, the PIM neighbor relationship will time out, and a new round of DR election will be triggered between other PIM neighbors.
D) On the shared network segment of the connection group members, the DR is responsible for sending a Register message to the RP. The DR connected to the group members is called the group member-side DR.

Solutions: