2021年最新のお手軽に合格させるH12-311試験にはこちらが提供する問題集PDFテストエンジン
H12-311のPDFで合格させるスゴ問題集でH12-311最新のリアル試験問題
質問 170
Which the following content are included in 802.11n MAC layer technology improvement? (Multiple choice)
- A. MIMO Technology
- B. Beamforming
- C. Piece of technology
- D. Frame Polymerization
正解: C,D
質問 171
Which of the following channels are overlapping channels in WLAN 2.4 GHz band?
- A. 4 and 10
- B. 4 and 8
- C. 6 and 11
- D. 3 and 8
正解: B
質問 172
If one AP of 802.11n support 2 * 2 MIMO technology, the theoretical rate of this AP is?
- A. 450 Mbps
- B. 300 Mbps
- C. 600 Mbps
- D. 150 Mbps
正解: B
質問 173
What are the diagnostic commands commonly used in WLAN networks? (Multiple Choice)
- A. Trace
- B. Show
- C. Ping
- D. Display
正解: A,B,C,D
質問 174
If you want to get better covered effect, you should enable the AP signal ( ) through the wall.
- A. vertical
- B. parallel
- C. 60°
- D. 45°
正解: A
質問 175
The AC6605 supports three ways to establish AP and AC interworking. What are the options (Select 3 Answers)?
- A. Find the AP through multicast and automatically go online
- B. Automatically discover AP and go online normally
- C. Automatically discover the AP and confirm the online
- D. Offline increase AP
正解: B,C,D
質問 176
In the 802.11 frame, what is the correct correspondence between the Type and the frame format in the Frame Control bit?
- A. Type is 01, indicating that the data frame
- B. Type is 10, indicating the control frame. When
- C. Type is 00, it means reserved. When
- D. Type is 00, it means management frame.
正解: D
質問 177
In China, the WLAN band supported by regulations is
- A. 5.15-5.25GHz
- B. 2.4-2.4835GHz
- C. 5.725-5.850GHz
- D. 5.25-5.35GHz
正解: B,C
質問 178
About the AP access control mode, which of the following statements is wrong? (Multiple choice)
- A. the white list based on MAC authentication, the authentication can be based on the SN
- B. By default AP under the control of the access method is not AC Certification
- C. If the AP uses the MAC access control authentication, MAC authentication list outside the AP can also let the on-line manual confirmation
- D. By configuring the AP offline also need certification before they can automatically access
正解: B,D
質問 179
The eSight network management system is Huawei's dedicated network management platform, so you can only manage Huawei's own devices.
- A. True
- B. False
正解: B
質問 180
What is the network consisting of a wireless AP and associated wireless clients?
- A. IBSS
- B. BSS
- C. NSS
- D. ESS
正解: B
質問 181
In the process of the Fit AP discovering the AC, the first step is for the AP to check whether there is a list of pre-configured static AC IP addresses.
- A. TRUE
- B. FALSE
正解: A
質問 182
Which of the following transfer rates is not supported by 802.11g?
- A. 12Mbps
- B. 54Mbps
- C. 65Mbps
- D. 9Mbps
正解: C
質問 183
How much bandwidth is each 802.11g frequency band channel?
- A. 20 MHz
- B. 25 MHz
- C. 22 MHz
- D. 50 MHz
正解: A
質問 184
Assume that the transmit power of AP is 1mW, it is () dBm after converted to dBm.
- A. 0
- B. 1
- C. 2
- D. 3
正解: B
質問 185
Huawei AC controller AC6605 supports user access security management through security templates and supports WEP, WPA/WPA2, and WAPI security policies.
- A. True
- B. False
正解: A
質問 186
In the 802.11 frame, what type of frame does the STA's association request and authentication request belong to?
- A. Data frame, control frame, management frame have this function
- B. Control frame
- C. Management frame
- D. Data frame
正解: C
質問 187
In 1999, the IEEE 802.11a standard was developed. The standard specifies that the WLAN operating frequency band is 5.15 to 5.825 GHz, and the data transmission rate reaches 11 Mbps.
- A. True
- B. False
正解: B
質問 188
How to deal with the failure of AP and AC version mismatch on a large number of devices.
- A. Replace the switch
- B. Upgrade the versions to match each other.
- C. Check if the POE power supply is normal.
- D. Replace the AP device.
正解: B
質問 189
Regarding the AP6610DN, the following statement is wrong.
- A. AP66010DN supports both Ethernet interface and fiber interface.
- B. AP6610DN is a dual-band AP, in which the 5GHz band can be used for both wireless bridging and user access.
- C. AP6610 only has one Ethernet interface, the maximum bandwidth is 1000M
- D. AP6610DN is an enhanced outdoor AP
正解: C
質問 190
802.11b supports () channels in the United States, where one channel does not overlap?
- A. 14; 6
- B. 11;6
- C. 11;3
- D. 14;3
正解: C
質問 191
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