Free Huawei H12-321 Exam Dumps Questions & Answers

Which of the following STAs does MAC address authentication suit the most?

• A.  Network printer
• B.  Testing PC running a Linux system
• C.  Mobile terminal, such as a smartphone
• D.  Office PC running a Windows OS

As shown in the figure, the main lobe of the directional antenna has a broadband width of 31 degrees. What is the angle between the two MPs on the right?

• A.  60 degrees
• B.  40 degrees
• C.  20 degrees
• D.  30 degrees

Which of the following statements are TRUE about communication between the active/standby ACs with servers in WLAN HSB mode? (Multiple Choice)

• A.  In load balancing mode, both the active and standby ACs communicate with servers.
• B.  In VRRP HSB scenarios, the active and standby ACs can advertise the virtual IP address or MAC address to servers. Only one AC communicates with servers using the virtual IP address.
• C.  In load balancing mode, only one AC communicates with servers.
• D.  In VRRP HSB scenarios, both the active and standby ACs advertise the virtual IP address or MAC address to servers. The two ACs communicate with servers using the virtual IP address.

When dual-link hot backup is enabled, the administrator enables the dual-link backup function, but the heartbeat interval and number of times are not modified. By default, the time when the AP detects the primary link timeout for the active/standby switchover is?

• A.  25 seconds
• B.  75 seconds
• C.  50 seconds
• D.  150 seconds

CAC is implemented in three modes. Which of the following statements about CAC implementation based on channel usage is FALSE?

• A.  When a roaming user attempts to access an AP, the AP checks whether the channel usage reaches the CAC roaming threshold. If so, the AP will reject the access request of the roaming user and send alarms.
• B.  An AP periodically detects the channel usage of a radio. Once the channel usage falls below the threshold, the AP sends a clear alarm, allowing new users to go online.
• C.  When receiving a new access request, an AP calculates the current channel usage and checks whether the channel usage reaches the threshold. If not, the AP allows the user to go online.
• D.  If the channel usage reaches the threshold after a new user goes online, an AP will reject access requests of new users, send alarms, but cannot hide its SSID.