[2025] Pass Key features of H12-311_V3.0 Course with Updated 343 Questions
H12-311_V3.0 Sample Practice Exam Questions 2025 Updated Verified
NEW QUESTION # 126
According to the different signal parameters controlled, what modulation methods can be divided into ()? (Select 3 Answers)
- A. phase modulation
- B. AM
- C. Wave modulation
- D. FM
Answer: A,B,D
NEW QUESTION # 127
Which of the following 802.11 control frames is sent by a STA to acquire the right to the wireless medium?
- A. CTS
- B. RTS
- C. PS-Poll
- D. ACK
Answer: B
NEW QUESTION # 128
If it is turned on on the switch PoE The function of this, you can no longer access traditional equipment on these interfaces.
- A. True
- B. False
Answer: B
NEW QUESTION # 129
according to AP and AC The inter-network architecture can divide the networking mode into two-tier networking and three-tier networking.
- A. True
- B. False
Answer: A
NEW QUESTION # 130
an examination AC What is the command for online users ()?
- A. display local-user
- B. display user-interface console 0
- C. display users all
- D. display access-user
Answer: D
NEW QUESTION # 131
Which of the following rates is not 802.11
a. The rate supported by the protocol ()?
- A. 6Mbps
- B. 24Mbps
- C. 30Mbps
- D. 12Mbps
Answer: C
NEW QUESTION # 132
802.11 In the frame, STA Which type of frame () does the association request and authentication request belong to?
- A. Data Frame
- B. Data frame, control frame, management frame have this function
- C. Management frame
- D. Control frame
Answer: C
NEW QUESTION # 133
When coverage area 2.4GHz Frequency band 1 When channel interference is large and severe, adjust the device to 3 Channel, can effectively reduce interference.
- A. True
- B. False
Answer: B
NEW QUESTION # 134
AP What factors are related to the coverage (). (Select 3 Answers)
- A. Antenna gain
- B. AP Size
- C. AP Transmit power
- D. Transmission loss
Answer: A,C,D
NEW QUESTION # 135
Which of the following standards organizations implements WLAN technical interoperability for WLAN equipment certification ()?
- A. WiFi
- B. IETF
- C. FCC
- D. IEEE
Answer: A
NEW QUESTION # 136
create radio-profile Must be bound wmm-profile Only possible, otherwise there will be configuration errors.
- A. True
- B. False
Answer: A
NEW QUESTION # 137
if AP Work in infrastructure mode, then AP The working state at this time is full-duplex mode.
- A. True
- B. False
Answer: B
NEW QUESTION # 138
Radio frequency mainly uses spread spectrum technology. Which of the following technologies belong to spread spectrum technology ()? (Select 2 Answers)
- A. OFDM
- B. FHSS
- C. QPSK
- D. DSSS
Answer: B,D
NEW QUESTION # 139
For the choice of WLAN coverage antennas, it is recommended to choose () for long and narrow areas, and () for wide and short-distance areas.
- A. Directional antenna; omnidirectional antenna
- B. Directional antenna; Directional antenna
- C. Omnidirectional antenna; Omnidirectional antenna
- D. Omnidirectional antenna; directional antenna
Answer: A
NEW QUESTION # 140
802.11 In the frame, Frame Control In position Type What is the correct correspondence with the frame format ()?
- A. Type for 10 Time represents control frame
- B. Type for 00 Time represents management
- C. Type for 00 Indicates reserved use
- D. Type for 01 Time represents data frame
Answer: B
NEW QUESTION # 141
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