H12-821 Online Practice Questions and Answers

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

As shown in the following figure, a new AP is deployed In dual link MSB networking (load balancing mode). Which AC will the connect to?

A. AC1

B. Random access

C. None

D. AC2

Which of the following statement regarding the display ospf peer command output is true?

A. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.

B. Through negotiation during DD packet exchange, the local end becomes the slave.

C. Router ID indicates that the local router ID Is 10.1.1.1.

D. The DR address is 10.1.1.1

Which of the following statements regarding the LSA age field are true?

A. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.

B. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.

C. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.

D. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.

What parameters can a DHCP6 server assign to a DHCPv6 client?

A. Gateway address

B. DNS server address

C. IPV6 address/prefix

D. SNTP server address

The Interface \P address and VRRP virtual IP address can be the same.

A. TRUE

B. FALSE

Regarding the route-policy set-cost configuration below, which of the following statements is true?

A. The route 11.1.0.0/16 is permitted by node 10, and its tost Is set to 300.

B. The cost of all routes is set to 200.

C. All the routes that are not permitted by node 10 will be denied.

D. The route 11.1.0.0/16 will continue to match node 20 after permitted by node 10, and (he final cost is set to 200.

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.

In BGP, the origin attribute of the routes imported using the import-route command is incomplete.

A. TRUE

B. FALSE

In a route-policy, which of the following BGP attributes can be used in apply clauses?

A. MED

B. AS_Path

C. Tag

D. Local-Preference