Online Access Free H12-321-ENU Exam Questions

Which statement about the omnidirectional antenna is FALSE?

• A.Signals from an omnidirectional antenna are evenly distributed 360 degrees around the central point.
• B.The omnidirectional antenna can concentrate energy and transmit signals to a specified direction.
• C.The lobe width of an omnidirectional antenna is vertical 360 degrees.
• D.The lobe width of an omnidirectional antenna is horizontal 360 degrees.

Which of the following statements are TRUE about radio resource management? (Multiple Choice)

• A.Radio resource management enables a WLAN to adapt to changes in the radio environment by dynamically adjusting radio resources.
• B.Radio waves will attenuate when they are transmitted over air, degrading service quality for wireless users. Therefore, radio resource management is needed.
• C.Radio resource management can improve user access security.
• D.Radio resource management can improve Internet experience of users.

A large enterprise needs to deploy a WLAN and has deployed Huawei chassis switches (S7700/9700/12700) on the live network. To save equipment room space and facilitate network capacity expansion in the future, the customer can install AC cards on chassis switches to deploy the WLAN.
Which types of ACs can be installed on chassis switches? (Multiple Choice)

• A.ACU2
• B.AC6605
• C.X1E card
• D.AC6005

The figure shows the radio calibration process.

What is the CORRECT sequence of radio calibration steps?

• A.(d)(a)(b)(c)
• B.(a)(b)(c)(d)
• C.(a)(b)(d)(c)
• D.(a)(d)(b)(c)

Which statements about roaming are TRUE? (Multiple Choice)

• A.STA roaming indicates the process in which STAs switch from one AP to another.
• B.When an AC receives an association/re-association request, it determines that the STA roams if an entry about the STA already exists.
• C.The APs used to implement WLAN roaming must be of the same model.
• D.In both Layer 2 and Layer 3 roaming, STAs* IP addresses remain unchanged.