H12-321 Online Practice Questions and Answers

Which of the following statements about active neighbor probe is FALSE?

A. An AP periodically sends Probe Request frames destined for a specified multicast address on different channels. After receiving the frames, surrounding APs learn that the AP is a neighbor.

B. Active probe is used to establish neighbor relationships between authorized APs.

C. Active probe is used to obtain the maximum interference signal strength between authorized neighboring APs, in which signal strength of the neighboring AP is the key.

D. Active probe and passive probe are used to collect interference information from rogue APs.

An AP detects brute force attacks by checking whether the number of key negotiation failures during the WPA/WPA2-PSK, WAPI-PSK or WEP-Share-Key authentication exceeds the configured threshold.

A. TRUE

B. FALSE

In smart roaming, an AP specifies the target AP for 802.11v-capable STAs. In this way, STAs actively roam to the target AP, and the original AP does not need to kick the STAs offline.

A. TRUE

B. FALSE

If three APs are deployed in a small conference room which can accommodate a maximum of 90 people/ CAC can be configured on each AP to limit the number of associated STAs within 30 and hide its SSID when the number of associated STAs exceeds 30, In this way, load balancing can be achieved among APs.

A. TRUE

B. FALSE

In a scenario that uses the Agile Controller to implement admission control, which of the following statements is TRUE about the roles of the RADIUS server/client?

A. The Agile Controller integrates all functions of the RADIUS server and client.

B. The Agile Controller functions as the RADIUS server, while the user terminal functions as the RADIUS client.

C. The authentication device (for example, 802.1x-enabled switch) functions as the RADIUS server, while the user terminal functions as the RADIUS client.

D. The Agile Controller functions as the RADIUS server, while the authentication device functions as the RADIUS client.

Which of the following commands is used to create a radio calibration profile?

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

B. [AC-wlan-view] regulatory-domain-profile name domain1

C. [AC-wlan-view] wired-port-profile name wired-port

D. [AC-wlan-view] ap-system-profile name mesh-sys

Which access authentication methods are supported by the Agile Controller?

A. 802.1x certification

B. Portal authentication

C. MAC certification

D. RADIUS

Which of the following statements about passive neighbor probe is TRUE?

A. An AP receives neighbor information to detect neighboring APs.

B. Passive probe is used by authorized APs to collect interference information from neighboring APs.

C. Passive probe is used by authorized APs to collect interference information from rogue APs.

D. Passive probe is used to establish neighbor relationships between authorized APs.

There are three implementations of CAC. What is wrong about the CAC implementation based on channel utilization?

A. When receiving a new user online request, the AP first calculates the channel utilization rate on the current radio. If the new user threshold is not reached, the new user is allowed to go online.

B. If the channel utilization reaches the new user threshold after the new user goes online, the access request of other new users is rejected, and an alarm is sent, but the SSID cannot be hidden.

C. For the access of the roaming user, check whether the channel utilization has reached the roaming user threshold. If it is reached, the roaming user access request is rejected and an alarm is sent.

D. The AP periodically detects the channel utilization of the radio. Once it falls below the new user threshold, it sends a release alarm to allow new users to go online.

The channel switching service is not interrupted. When the AP switches channels, the terminal is notified to the terminal in advance, and the time for switching the channel is agreed. When the AP and the terminal switch channels, the service is not interrupted.

A. Correct

B. False