H12-821 Online Practice Questions and Answers

CORRECT TEXT Compress the 2001:0DBB:B8:0000:C030:0000:0000:09A0:CDEF address.___________(if the answer contains letters, capitalize them.)

CORRECT TEXT There are two BFD operating modes. In_______mode, the local end sends BFD Control packets at specified intervals, and the remote end checks whether the local end periodically sends BFD Control packets. (Use lowercase letters.)

Which of the following PIM protocol packets have unicast destination addresses.

A. Register Stop

B. Bootstrap

C. Graft

D. Assert

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.

Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?

A. 802.11ac

B. 802.11n

C. 802.11ax

D. 802.11b

ON a stateful inspection Firewall where there is no session table, when the status detection mechanism is enabled and the second packet (CYN+ACK) of 3-way hadshakes reaches the firewall. Which of the following statements is true?

A. If the firewall security policy permits packets to pass, the session table is created.

B. By default, when status detection is disabled and the permit policy is configured packets can pass.

C. Packets must pass the firewall, and a session table is established.

D. If the firewall security policy permits packets to pass, the packets can pass the firewall.

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 configurations are not mandatory when an administrator configures VRRP?

A. Preemption mode

B. Preemption delay

C. Virtual router priority

D. Virtual IP address

Which of the following attribute must be carried in an Update message?

A. Local-pref

B. Prefval

C. MED

D. AS-Path

Which of the following TLVs is used by ISIS to describe the IP address of an interface?

A. 129

B. 131

C. 128

D. 132