あなたを合格させるHCIA-WLAN H12-311_V3.0試験問題集で2024年12月10日には301問あります
H12-311_V3.0無料試験学習ガイド！（更新された301問あります)
質問 # 38
Which of the following ports can only belong to 1 Piece VLAN ().
- A. trunk
- B. hybrid
- C. access
- D. eth-trunk
正解：C
質問 # 39
Int-Serv The model provides users with end-to-end absolute
- A. Not conducive to traffic monitoring
- B. Scalability is not good
- C. Low forwarding efficiency
- D. Limited bandwidth reservation
正解：B
解説：
QoS Guarantee, but the reason for not successful large-scale commercial use is () .
質問 # 40
Regarding the networking mode, the following description is correct ().
- A. if AC The ability to process data is relatively weak, it is recommended to use bypass networking
- B. In a direct-connected network, AP Business data can not go through AC And directly reach the upstream network
- C. The advantage of the three-layer network is simple configuration and easy networking
- D. Compared with the three-layer network, the two-layer network is more suitable for large-scale networks such as parks and stadiums.
正解：A
質問 # 41
How many management nodes () does eSight Standard Edition support at most?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
質問 # 42
Among the following priority queues, the () queue has the highest default priority.
- A. AC-BE
- B. AC-VI
- C. AC-BK
- D. AC-VO
正解：D
質問 # 43
Which modulation method is the picture below ()?
- A. phase modulation
- B. FM
- C. Wave modulation
- D. AM
正解：B
質問 # 44
when AC When it is a bypass networking, if the data is forwarded directly, then the data flow () flow () AC. AC; If the data is in tunnel forwarding mode, the data
- A. Pass, not pass
- B. Pass by
- C. Don't go through
- D. Don't pass, don't pass
正解：C
質問 # 45
Regarding the telnet management of AC6605, the following statement is wrong ().
- A. telnet can be authenticated based on user name and password, and the transmission is encrypted, so it is quite safe
- B. telnet service can be configured separately on the wired side and wireless side of AC
- C. The telnet service is turned off by default on the AC
- D. telnet is a way to remotely manage AC
正解：A
質問 # 46
To the following WLAN In the description of the network diagram, the error is ().
- A. You cannot use the aggregation switch to STA distribute IP address
- B. The picture shows the bypass networking
- C. Can be configured and managed on the access switch VLAN of PVIDA.
- D. can use AC As DHCP Server ,give AP distribute IP address
正解：A
質問 # 47
For protection WLAN Security, which of the following measures can be taken? (Select 3 Answers)
- A. System protection
- B. encryption
- C. Control flow
- D. Authentication
正解：A、B、D
質問 # 48
Huawei Wireless AP What are the two upgrade modes download ()? (Select 2 Answers)
- A. FTP Server download
- B. AC download
- C. AP Bring your own
- D. BAS
正解：A、B
質問 # 49
Which of the following statements about region is correct ()?
(Select 3 Answers)
- A. If there is no configuration, all APs belong to region 0 by default
- B. APs belonging to the same region will uniformly adjust the radio frequency channel and power
- C. An AP can belong to two regions at the same time, so that roaming is more optimized
- D. AP region has three types of deployment: dense deployment, discrete deployment, and ordinary deployment.
正解：A、B、D
質問 # 50
In theory, the network cable used in the project cannot exceed ()rice.
- A. 0
- B. 1
- C. 2
- D. 3
正解：A
質問 # 51
Among the following options, () is the reason for using 5G priority access.
- A. The transmission rate of the 5G frequency band is higher than that of the 2.4G frequency band
- B. The connection speed between users and APs in the 5G frequency band is very fast
- C. 5G frequency band can provide better access capability and capacity
- D. It is easier to make network planning in the 5G frequency band
正解：C
質問 # 52
for dBm ,dB,dBi, The following description is correct ().
(Select 3 Answers)
- A. If the antenna of A is 12dBi , The second antenna is 14dBi , It can be said that A is smaller than B 2dBi
- B. dB : The relative value of characterizing power
- C. dBm : Absolute value of characterizing power
- D. dBi and dBd : Characterize the relative value of gain
正解：B、C、D
質問 # 53
For the lobe width, which of the following descriptions is correct is (). (Select 3 Answers)
- A. The narrower the lobe width, the better the directivity, the longer the radiation distance, the stronger the anti-interference ability
- B. Within the range of the main lobe, the power density relative to the maximum radiation direction is reduced by half (3dB) Angle
- C. Only within the coverage of the half power angle, the terminal can receive the signal
- D. The pattern usually has two or more lobes
正解：A、B、D
質問 # 54
The following () service model can provide end-to-end QoS services, but the scalability is not good.
- A. IntServ model
- B. Best Effort model
- C. FIFO model
- D. DiffServ model
正解：A
質問 # 55
Which of the following protocols can support at the same time 2.4GHz Frequency band and 5GHz Frequency band()?
- A. 802.11g
- B. 802.11n
- C. 802.11a
- D. 802.11b
正解：B
質問 # 56
802.11 In the frame, Frame Control In position Type What is the correct correspondence with the frame format ()?
- A. Type for 01 Time represents data frame
- B. Type for 10 Time represents control frame
- C. Type for 00 Time represents management
- D. Type for 00 Indicates reserved use
正解：C
質問 # 57
The 802.11 physical layer standard defines some common operations on the physical layer of wireless networks: such as QoS, security, and roaming operations.
- A. False
- B. True
正解：A
質問 # 58
In the direct-connected networking solution, AP and AC Establish CAPWAP Tunnel, the management flow must be encapsulated in CAPWAP In the tunnel, data service The stream can be optionally encapsulated in CAPWAP In the tunnel.
- A. True
- B. False
正解：A
質問 # 59
After one data frame is sent and confirmed, what is the time interval to wait before sending the next data frame ()?
- A. SIFS
- B. DIFS
- C. PIFS
- D. IFS
正解：B
質問 # 60
Regarding the functional characteristics of AP6010SN, which of the following statements is correct is ().
(Select 2 Answers)
- A. AP6010SN has an Ethernet interface and supports 802.3af PoE power supply standard
- B. AP6010SN not only has a built-in antenna, but also an external antenna, which is very convenient
- C. AP6010SN is an indoor distributed AP, which only supports working in the 2.4GHz frequency band
- D. AP6010SN supports WDS function, which can realize point-to-point and point-to-multipoint wireless bridging
正解：A、D
質問 # 61
At present, the security policy based on user authentication that is widely used in the enterprise network is () (Select 2 Answers)
- A. WPA1 PSK+TKIP/CCMP
- B. WPA1 802.1X+TKIP/CCMP
- C. WPA2 PSK+TKIP/CCMP
- D. WPA2 802.1X+TKIP/CCMP
正解：B、D
質問 # 62
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