H12-321 Online Practice Questions and Answers

An engineer sets the CAPWAP heartbeat detection interval to 20 seconds and enables dual-link HSB. What is the heartbeat packet transmission timeout interval of the active link before an active/standby switchover occurs?

A. 20 seconds

B. 60 seconds

C. 75 seconds

D. 90 seconds

Channel switching service uninterrupted feature implementation without terminal support

A. Correct

B. False

When using the Agile Controller to synchronize data, an engineer finds that information of the following users cannot be synchronized: Jack=boss/ Mike=leader/ Mary=manager, Ann=girlfriend. There are no duplicate user names in the related user groups or OUs. What may cause the synchronization failure?

A. The user names are too long.

B. The user names are too short.

C. The user names contain invalid characters.

D. The user names must contain digits and letters.

Which of the following statements about AP-based dynamic load balancing are TRUE? (Multiple Choice)

A. Dynamic load balancing overcomes the limitation on the number of group members in static load balancing mode.

B. The number of members in a dynamic load balancing group is the same as that in a static bad balancing group.

C. Members can be automatically added to a dynamic load balancing group and can work on different frequency bands.

D. Members can be automatically added to a dynamic load balancing group and must work on the same frequency band.

An enterprise needs to upgrade the AC. Which of the following methods is used to upload the upgrade file to the AC?

A. AC as the SFTP Client

B. AC as SFTP Server

C. AC as an FTP Client

D. AC as FTP Server

Which of the following commands can be used to create an air interface scan template?

A. [AC-wlan-view] rrm-profile name wlan-net

B. [AC-wlan-view] air-scan-profile name wlan-airscan

C. [AC-wlan-view] vap-profile name wlan-vap

D. [AC-wlan-view] ssid-profile name wlan-ssid

Which of the following statements about APs and STAs are TRUE during an active/standby switchover in dual-link HSB mode? (Multiple Choice)

A. APs do not need to go online again.

B. APs need to go online again.

C. STAs do not need to go online again.

D. STAs need to go online again.

In smart roaming, to determine whether a neighbor AP with better signals exists, an 802.11k-incapable STA needs to start scanning to obtain neighbor AP information.

A. TRUE

B. FALSE

When the air interface frame is a management frame, when the Capability Info field ESS and IBSS bits in the management frame are, can the device be determined to be a wireless bridge?

A. 00

B. 01

C. 10

D. 11

The following is true about the three backup methods?

A. Dual-link hot backup: Back up AP and STA information at the same time, and back up CAPWAP link information.

B. VRRP hot backup: back up AP and STA information at the same time, and back up CAPWAP link information.

C. Whether a cold backup or a hot backup is a backup AC only supports backup for one primary AC.

D. Dual-link backup is a cold backup and does not back up STA information. The AP establishes two links with the active and standby ACs at the same time. During the active/standby switchover or the switchback process, the STA needs to go online again, and the service will be temporarily interrupted.