H12-821 Online Practice Questions and Answers

DRAG DROP

What is the correct procedure for a VLAN pool to assign terminals to VLANs.

Select and Place:

BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?

A. 4784

B. 3784

C. 5784

D. 2784

Which of the following statements regarding DR/BDR are false?

A. In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.

B. DR others listen on the multicast address 224.0.0.5.

C. All DR others establish neighbor relationships with DR and BDR only.

D. DR others listen on the network address 224.0.0.6.

When two routers exchange LSDB information using DD packets, a master/slave relationship is formed first, the router with a larger router ID is the master, and determine the MS bit.

A. TRUE

B. FALSE

Which of the following statements about multicast packet forwarding is true?

A. If a multicast data packet fails the RPF check, the packet must have been received through a sub-optimal interface. However, this interface still receives and forwards the multicast traffic downstream.

B. IGMP snooping cannot control the scope of multicast traffic flooding on a Layer 2 network.

C. The source address of a multicast packet is a unicast address.

D. In multicast transmission, the destination address of a packet can be the unicast address of a host.

Which of the following statements regarding the stateful inspection firewall is true?

A. When the stateful inspection firewall checks packets, packets of one same connection are not correlated.

B. Because UDP is a connectionless protocol, so the stateful inspection firewall cannot match UDP packets with the status table.

C. The stateful inspection firewall only needs to match the first data packet against a rule, and the subsequent packets of the connection are matched directly in the state table.

D. The stateful inspection firewall needs to match the rules for each incoming packet.

Which of the following configurations are not mandatory when an administrator configures VRRP?

A. Preemption mode

B. Preemption delay

C. Virtual router priority

D. Virtual IP address

As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?

A. Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.

B. After a port is Configured as an edge port, the port can quickly enter the Forwarding state.

C. You can enable the edge port on SWD's GEO/0/2 connected to the terminal so that this port can quickly enter the Forwarding state.

D. You can enable the edge port on SWC's GE0/0/2 connected to the terminal so that this port can quickly enter the forwarding state.

Which of the following statements regarding the summary automatic command and BGP route summarization is false?

A. After this command is configured, BGP sends only the summarized routes to peers

B. This command is used to implement automatic summarization. Automatic summarization takes precedence over manual summarization

C. This command enables automatic summarization for the locally imported routes

D. After this command is configured, BGP summarizes routes based on natural network segments

Which of the following statements about WLAN roaming are true?

A. APs for roaming do not need to have overlapping signal coverage.

B. APs for roaming must be in the same extended service set (ESS).

C. APs for roaming must have overlapping signal coverage.

D. APs for roaming must be in the same basic service set (BSS).