Free Access Huawei.H12-891_V1.0.v2022-07-04.q121 Practice Test (Page 3)

Question 6

Which of the following options is described correctly for the assertion mechanism?( Radio).

A.The assertion mechanism is used for the election of DR

B.In the assertion mechanism, the loser will shut down the interface with the broadcast network necklace

C.Winner's election process does not make IP address size a condition of the election

D.In the assertion mechanism, the winner is responsible for forwarding multicast data to the broadcast segment

Question 7

Which of the following scenarios send free ARP messages?( Multiple choice questions).

A.After the VRRP protocol master and standby role election is completed

B.When a new host configured with an IP address is connected to the network

C.The DHCP client receives an acknowledgment message from the server after it sends it

D.When a host connected to the switch issues a Ping message.

Question 8

IGMP SSMMapping is bound to multicast through a static multicast source, so that members of IGMPv1 and IGMP2 can also access the SSM multicast network. The following statement about IGMPSSMMapping is wrong?( Radio).

A.IGMP SSM Mapping does not process reporting messages from IGMPv3 In order to ensure that the same network segment runs any version

B.If the IGMP SSM Mapping feature is not enabled, neither IGMPv1 nor IGMPv2 supports multicast for deploying SSM modules

C.IGMP hosts can make SSM services run IGMPv3 on the multicast router socket connected to the network segment where the member host is located

D.The multicast address of the SSM is 23

Question 9

Regarding the MPLS basic forwarding process, the following description is incorrect? Radio

A.When the P message enters the MPLS domain, check whether the Tunel lD value corresponding to the destination IP address is Ox0O If the Tunel IlD value is Ox0 Then enter the MPLS forwarding process.

B.The transport node device replaces the existing top-of-stack label (outermost label) with the label assigned by the next hop device.

C.By default, the PHP-enabled Erass node assigns a label value of 3 to the inverted second-hop node.

D.When an IP message enters the MPLS domain, the MPLS boundary device inserts a new label between the layer 2 header and the IP header.

Question 10

The duplicate address detection feature for NDP in the following description is incorrect?

A.The interface needs to perform duplicate address detection before enabling any of the unicast IPv6 addresses

B.Duplicate address detection is implemented via RS and RA messages

C.IPv6 unicast address is called a tentative address after it is assigned to an interface and before it is detected by duplicate addresses

D.IPv6 duplicate address detection technology is similar to free ARP in IPv4

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Question 6

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