Online Access Free H12-821_V1.0 Practice Test

In a WLAN network, when there is an IPv4 Layer 3 networking between the AC and AP, the user needs to configure the Option43 field.
Which of the following functions does it mainly implement?

• A.Set subnet mask options
• B.Set gateway address options
• C.Set manufacturer-customized options
• D.Set DNS server address options

Which of the following is wrong about OSPF discarding directly?

• A.The DD packet contains all LSA information, which can be used to periodically synchronize link state database information between neighbors
• B.The intervals for sending Hello packets between the two routers must be the same, otherwise neighbors cannot be established
• C.The DD packet carries the LSA header information to describe the link state summary information
• D.Hello packets are used to discover and maintain neighbor relationships. On broadcast networks and NBLA networks, Hello packets are also used to elect DR and BDR.

Drag and Drop Question
BFD for OSPF is deployed on a directly connected link.
If the physical link is disconnected, drag the following BFD processes to the corresponding sequence numbers.

Correct Answer:

In PIM-DM, the assertion mechanism is to ensure that only one multicast router forwards multicast packets in the shared network segment.
Which of the following parameters are the conditions for electing Assert Winner? (Multiple choice)

• A.Overhead
• B.Interface IP address
• C.Unicast routing priority
• D.Router ID

The three routers run IS-IS and have established an adjacency relationship. The area numbers and router levels are marked in the figure.

If the road between R1 and R2 is interrupted, which of the following statements is correct? (Multiple choice)

• A.The default route in the R2 routing table will disappear
• B.R1 runs the SPF algorithm to remove R2 from the SPF trunk
• C.R1 sets the Age of the LSP generated by R2 to 0
• D.The default route in the R2 routing table still exists