Huawei H12-311-ENU HCIA-WLAN(Huawei Certified ICT Associate-Wireless Local Area Network) Online Training
Huawei H12-311-ENU Online Training
The questions for H12-311-ENU were last updated at Jan 11,2025.
- Exam Code: H12-311-ENU
- Exam Name: HCIA-WLAN(Huawei Certified ICT Associate-Wireless Local Area Network)
- Certification Provider: Huawei
- Latest update: Jan 11,2025
An office houses 150 2.4 GHz users with a user concurrency rate of 60%. It is required that the bandwidth per capita be 2 Mbps on the downlink) and 1 Mbps on the uplink).
Assuming that 20 users are connected to each AP and interference is not taken into account, at least how many APs must be deployed to meet capacity requirements?
- A . 2
- B . 3
- C . 4
- D . 5
The antenna type varies with the service scenario.
Which of the following statements is true about directional antennas?
- A . Typically, directional antennas have a small gain and provide a shorter coverage distance than that of omnidirectional antennas.
- B . Directional antennas have a narrow coverage area, posing less interference to other APS.
- C . Each directional antenna is a single -polarized antenna with one port.
- D . Directional antennas Can be centrally deployed to cover a round or square area with a distance of less than 30 meters.
Which of the following statements about the ESS is true?
- A . ESSS are basic WLAN units.
- B . The ESS identifies an AP.
- C . BSSS in an ESS can have different SSIDs.
- D . The ESS is composed of BSSS as basic units and is a method of expanding the BSS range.
Which of the following statements about AC N+1 backup is true?
- A . User data information is backed up in real time.
- B . An AP simultaneously establishes CAPWAP tunnels with all ACs.
- C . The load balancing mode is not supported.
- D . Active/standby switchover and switchback are supported.
Which of the following statements about the Fat AP architecture is true?
- A . A Fat AP must work with an AC.
- B . Fat APs are applicable to medium- and large sized enterprises because they are easy to manage and maintain.
- C . Fat APs support automatic radio calibration, load balancing, and Layer 3 roaming.
- D . A Fat AP can implement user access, as well as encrypt and forward service data.
Which of the following statements about the AC +Fit AP architecture is false?
- A . Fit APs cannot work alone and need to be maintained and managed by the AC.
- B . QoS and security functions are provided by the AC.
- C . APS can be deployed in zero configuration mode, making this architecture suitable for large scale networks.
- D . APs and STAS must be managed by an NMS.
Which of the following 802.11 frames is used to receive data packets by a STA working in power-saving mode?
- A . RTS
- B . CTS
- C . ACK
- D . PS-Poll
Which of the following 802.11 control frames is sent by a STA to acquire the right to the wireless medium?
- A . RTS
- B . CTS
- C . ACK
- D . PS-Poll
Which of the following WL AN channel ranges is allowed to be used outdoors by the State Radio Regulation of China?
- A . 36-48
- B . 52 -64
- C . 1-14
- D . 149-165
Which of the following statements about carriers is false?
- A . A carrier is an electromagnetic wave that is modulated to transmit a signal. and its waveform is typically a sine wave.
- B . Carrier signals can be produced by modulating the three components (frequency bandwidth frequency, and phase) of electromagnetic waves.
- C . Carriers are the physical basis and bearer tool for transmitting voice and data information.
- D . The receiver end needs to parse carrier signals to obtain data.
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