H12-821 Online Practice Questions and Answers

CORRECT TEXT A Huawei firewall by default creates security zones named untrust, dmz, _________ and local. (Use Lowercase letters.)

In the OSPF protocol, inter-area route calculation involves only Router LSA, Network LSA, and Summary LSA.

A. TRUE

B. FLASE

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

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

A. TRUE

B. FALSE

An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?

A. 75s

B. 20s

C. 60s

D. 90s

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

A. Local-pref

B. Prefval

C. MED

D. AS-Path

Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?

A. The port In discarding or learning state does not forward data frames.

B. The port in discarding state does not learn MAC addresses table.

C. The port in discarding or learning state does not learn MAC addresses

D. The port In learning stole docs not learn MAC addresses table.

A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?

A. The circuit level of S4/0/0 is Level-1.

B. S4/0/0 supports IPv6.

C. S4/0/0 sends IIH packets at the interval of 30s.

D. The cost of S4/0/0 is 20.

RSTP provides different functions in different scenarios. Which of the following statements Is false?

A. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period

B. The role of the designated port that is enabled with root protection cannot be changed C. If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port and triggers STP calculation

D. When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does not forward packets. If the port does not receive optimal RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state

Which of the following statements is false?

A. If the current DR fails, the current BDR automatically becomes a new DR, and a BDR will be elected again.

B. A device with a higher router priority has a higher election priority.

C. When a router with the highest router priority joins an OSPF network, this router will become the new DR.

D. If two devices have the same router priority, the device with a larger router ID has a higher election priority.