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Huawei H12-311-ENU Exam Syllabus Topics:
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NEW QUESTION 144
There are four wireless STAs.
Which workstations occupy the channel preferentially according to the following backoff time parameters?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 145
For the polarization of the antenna, which of the following description is correct? (Multiple choice)
- A. If the electric field of the electric wave is perpendicular to the ground, we call it a vertically polarized wave.
- B. The polarization of the antenna refers to the direction of the magnetic field strength formed by the antenna radiation.
- C. If the transmitting antenna is circularly polarized, the receiving antenna must also be circularly polarized and the polarization directions of both must be the same.
- D. The antenna radiates electromagnetic waves to the surrounding space, and the direction of the electric field changes according to a certain law.
Answer: A,C,D
NEW QUESTION 146
Huawei AP can also implement AP-based load balancing in Fat AP mode.
- A. False
- B. True
Answer: A
NEW QUESTION 147
Which type of message is used in the 802.11 frame for the terminal to receive data packets in the power saving mode?
- A. RTS
- B. PS-Poll
- C. CTS
- D. ACK
Answer: C
NEW QUESTION 148
If the AP wants to obtain the IP address of the AC through the DNS server, first obtain the IP address of its own IP address, DHCP server, and DNS.
- A. True
- B. False
Answer: A
NEW QUESTION 149
AAA is a management framework, which protocol is common used to implemente?
- A. RADIUS
- B. 802.1X
- C. CAPWAP
- D. 802.11a/b/g/n
Answer: A
NEW QUESTION 150
Which of the following commands can be used to view the AC current configuration?
- A. display current-configuration
- B. display interface
- C. display ap all
- D. display version
Answer: A
NEW QUESTION 151
In the following Huawei AP, which can support 802.11ac? (Multiple Choice)
- A. AP9030DN
- B. AP7050DE
- C. AP6010DN-AGN
- D. AP9132DN
Answer: A,B,D
NEW QUESTION 152
802.11b is a protocol based on Orthogonal Frequency Division Multiplexing (OFDM) technology.
- A. False
- B. True
Answer: A
NEW QUESTION 153
What type of frame does the ACK frame belong to in the WLAN?
- A. Management frame
- B. Empty data frame
- C. Data frame
- D. Control frame
Answer: D
NEW QUESTION 154
Which of the following standards organizations is implementing WLAN technology interoperability for WLAN device authentication?
- A. IEEE
- B. IETF
- C. WiFi Alliance
- D. FCC
Answer: C
NEW QUESTION 155
If a BSS is composed entirely of STAs, what is the BSS also called?
- A. IBSS
- B. BSA
- C. ESS
- D. SSID
Answer: A
NEW QUESTION 156
Wireless client passive scanning is obtained by receiving what frames to get the wireless network information around?
- A. Probe Request frame
- B. Association Request frame
- C. Authentication frame
- D. Beacon frame
Answer: D
NEW QUESTION 157
If an 802.11n AP supports 2*2 MIMO technology, what is the theoretical rate of this AP?
- A. 150 Mbps
- B. 600 Mbps
- C. 450 Mbps
- D. 300 Mbps
Answer: D
NEW QUESTION 158
Use the signal scanning tool inSSIDer to scan the hidden SSID name to the nearby WIFI.
- A. True
- B. False
Answer: A
NEW QUESTION 159
What is the Chinese name of SSID?
- A. Extended service set
- B. Basic service area
- C. Basic service set
- D. Service set identifier
Answer: D
NEW QUESTION 160
Regarding the working principle of 5G priority, the following statement is correct.
- A. 5G priority feature is to let the 5G client send data preferentially.
- B. 5G priority is turned on, the network transfer speed of the client supporting only 2.4G will be slower.
- C. 5G priority requires the AP to work normally when it is a dual-band AP.
- D. 5G priority requires all clients to support both 2.4GHz and 5GHz bands
Answer: C
NEW QUESTION 161
What is the bandwidth of each channel in the 802.11g band?
- A. 20 MHz
- B. 25 MHz
- C. 50 MHz
- D. 22 MHz
Answer: A
NEW QUESTION 162
For better coverage, try to make the AP signal pass through the wall.
- A. Parallel
- B. Vertical
- C. 0
- D. 1
Answer: B
NEW QUESTION 163
Which channels in the 802.11b protocol do not overlap each other (Select 3 Answers)?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A,B,C
NEW QUESTION 164
In the 802.1X protocol, you must have the ability to authenticate and authorize users (Select 3 Answers).
- A. eSight server
- B. authentication server
- C. client
- D. certifier
Answer: B,C,D
NEW QUESTION 165
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