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Huawei H12-311 Sample Question Answers
Question # 1
The number of APs supported by the AC6605 by default is.
A. 4 B. 0 C. 8 D. 10
Answer: A
Question # 2
Use the display ap all command to view the MAC, type, and running status of an AP.
A. True B. False
Answer: A
Question # 3
If the demand for WLAN capacity is high in a coverage area, the construction method ofshould be considered.
A. Indoor distribution system combination road B. Outdoor distribution system combination road C. Indoor installation D. Outdoor type AP+ directional antenna
Answer: C
Question # 4
Among the following options, is the reason for using 5G priority access.
A. 5G frequency band is easier to network planning B. 5G frequency band can provide better access capacity and capacity The connection speed between the user and the AP is fast in the C. 5G frequency band. The transmission rate of the D. 5G frequency band is higher than the 2.4G frequency band.
Answer: B
Question # 5
If the demand for WLAN capacity is high in a coverage area, the construction method ofshould be considered.
A. Indoor distribution system combination road B. Outdoor distribution system combination road C. Indoor installation D. Outdoor type AP+ directional antenna
Answer: C
Question # 6
The equipment manufacturer can usually be judged according to the following.
A. SSID B. MAC address C. Encryption type D. Channel
Answer: B
Question # 7
The maximum number of layers supported by the location topology in Huawei eSight islayer.
A. 7 B. 8 C. 9 D. 10
Answer: D
Question # 8
Which configuration methods does the wireless controller support (Select 3 Answers)?
A. telnet configuration B. console port configuration C. eSight configuration D. LLDP configuration
Answer: A,B,C
Question # 9
The gain of antenna A is 11dBi, and the gain of antenna B is 8dBi. It can be said thatantenna A has a larger gain than antenna B.
A. 3dB B. 3dBi C. 3dBd D. Uncertain
Answer: A
Question # 10
In order to ensure that there is no interference between the channels of the WLAN network,which of the following bands belong to the Chinese 5.8GHz band (Select 2 Answers)?
A. 149 B. 151 C. 153 D. 155
Answer: A,C
Question # 11
How to deal with the failure of AP and AC version mismatch on a large number of devices.
A. Upgrade the versions to match each other. B. Replace the AP device. C. Replace the switch D. Check if the POE power supply is normal.
Answer: A
Question # 12
The AP can provide power and data transmission through the POE switch.
A. True B. False
Answer: A
Question # 13
The two commonly used units describing antenna gain are dBi and dBd, and theconversion relationship between them is: dBi=dBd+2.14.
A. True B. False
Answer: A
Question # 14
The following statement about frequency planning is correct (Select 2 Answers)?
A. 2.4 GHz generally uses 1, 6, and 11 three non-overlapping channels for coverage. B. There are generally 23 non-overlapping channels available in China at 5 GHz. C. Microwave interference will occur in the full 2.4GHz band. D. If the AP is dual-frequency, it is recommended to use the 5G priority function.
Answer: A,D
Question # 15
The AC performs a load balancing process based on the information.
A. The AP periodically sends information about the STA associated with it to the AC. B. STA periodically reports the currently associated AP ID. C. AC periodically queries the number of STAs associated with an AP. D. STA periodically searches for the AP information and reports the AP ID through theassociated AP.
Answer: B
Question # 16
Which of the following options will cause users to not find a wireless network signal (Select2 Answers)?
A. AP is configured with 5G priority, resulting in 2.4G wireless client not searching forsignals. B. The user wireless network card is not enabled or the wireless network card hardwareswitch is not turned on. C. The wireless controller is configured with user isolation D. User wireless network card driver is abnormal
Answer: B,D
Question # 17
The following is an incorrect way to refer to AP access control (Select 2 Answers).
A. By default, the access control mode of the AP to the AC is not authenticated. B. By configuring the AP in the offline state, authentication is required to automaticallyaccess the AP. C. The configuration whitelist can be authenticated based on the MAC or authenticatedbased on the SN. D. If the AP access control adopts MAC authentication, the AP outside the MACauthentication list can also be online after being manually confirmed.
Answer: A,B
Question # 18
The Int-Serv model provides users with end-to-end absolute QoS guarantees, but thereason for the lack of successful large-scale commercial use is.
A. Limited bandwidth reservation B. Low forwarding efficiency C. Poor scalability D. Not conducive to traffic regulation
Answer: C
Question # 19
The roaming of the terminal in different VLANs belongs to.
A. Seamless AP roaming B. Layer 2 roaming C. Three-layer roaming D. Four-layer roaming
Answer: C
Question # 20
If an AP has been added offline, the AP can go online directly.
A. True B. False
Answer: A
Question # 21
Which of the following commands can be used to view the AC current configuration?
A. display interface B. display current-configuration C. display ap all D. display version
Answer: B
Question # 22
Commonly used RF cables for WLAN systems are (ABC) (Select 3 Answers).
A. RG-8 jumper B. 1/2" (inch) super soft feeder C. 1/2" (inch) feeder D. 13/8" (inch) feeder
Answer: A,B,C
Question # 23
WLAN APs can be powered by (Select 3 Answers).
A. POE switch B. POE adapter C. Independent power adapter D. RF cable
Answer: A,B,C
Question # 24
The power of the indoor AP is generally mW.
A. 100 B. 500 C. 800 D. 50
Answer: A
Question # 25
The common reason why an AP cannot obtain an IP address is (ABC) (Select 3 Answers).
A. The address pool is incorrectly configured. B. The address pool is exhausted. C. Intermediate network problems. D. POE power failure.
Answer: A,B,C
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