[2022年03月] 無料H12-311試験問題をゲット！H12-311実際の無料試験問題
検証済みのH12-311問題集と300格別な問題
質問 13
The following is not the AP binding template .
- A. AP template
- B. Radio frequency template
- C. ESS template
- D. Planning table template
正解: D
質問 14
If an enterprise wireless network networking mode is direct forwarding, the thin AP can convert the 802.11 data packet into an Ethernet packet, and then encapsulate the packet into a CAPWAP encapsulation and transmit the data packet to the AC through the CAPWAP tunnel.
- A. False
- B. True
正解: A
質問 15
Which of the following is included in the CSMA/CA mechanism in 802.11 WLAN? (Multiple Choice)
- A. Conflict detection
- B. Carrier sensing
- C. Conflict avoidance
- D. Multiple access
正解: B,C,D
質問 16
For dBm, dB, dBi, the following description is correct (Select 3 Answers).
- A. dB: Characterizing the relative value of power
- B. If the antenna is 12dBi and the antenna is 14dBi, it can be said that A is smaller than 2D.
- C. dBm: characterizes the absolute value of power
- D. dBi and dBd: characterize the relative value of the gain
正解: A,C,D
質問 17
The omnidirectional antenna exhibits a degree of on the horizontal pattern.
- A. 0
- B. 1
- C. 2
- D. 3
正解: C
質問 18
Which of the following AP modes does not belong to WDS network?
- A. Bridge AP
- B. Middle AP
- C. Leaf AP
- D. Root AP
正解: A
質問 19
When using the Huawei AC+FIT AP to set up a mesh network, the AP Zero Touch Configure online is supported.
- A. TRUE
- B. FALSE
正解: A
質問 20
Which of the following statements are correct? (Multiple choice)
- A. When the user obtains the IP address successfully, the user triggers the HTTP packet of the user. In this case, the user is forced to redirect to the portal server to perform the authentication process.
- B. WAPI is China's wireless LAN national standard system
- C. WPA2 uses 802.1X authentication
- D. WPA2 PSK authentication requires the user to enter username and password to connect
正解: A,B,C
質問 21
In WLAN, the AP has been working in a half-duplex state.
- A. True
- B. False
正解: A
質問 22
BSS is called the Basic Service Set, BSS can be divided into Independent BSS and Infrastructure BSS two kinds 。
- A. True
- B. False
正解: A
質問 23
Which algorithm is used for CCMP encryption?
- A. AES
- B. Michael
- C. RC4
- D. SMS4
正解: A
質問 24
Which of the following is the command to restart the AC6605?
- A. [Quidway]reload
- B. <Quidway> reload
- C. [ Quidway] reboot
- D. <Quidway> reboot
正解: D
質問 25
Which of the following can be done to protect WLAN security (Select 3 Answers)?
- A. Authentication
- B. System protection
- C. Control traffic
- D. Encryption
正解: A,B,D
質問 26
For the CAPWAP protocol, the following description is wrong.
- A. Transmission protocol between AC and thin AP
- B. Transmission protocol between thin AP and wireless client
- C. CAPWAP protocol draws on the useful features of other protocols.
- D. Developed by the CAPWAP Working Group The development of the
正解: B
質問 27
Which is the longest interval between 802.11 frames?
- A. DIFS
- B. PIFS
- C. IFS
- D. SIFS
正解: A
質問 28
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
正解: B
質問 29
The IEEE 802.11 standard used to define roaming is
- A. IEEE 802.11h
- B. IEEE 802.11c
- C. IEEE 802.11j
- D. IEEE 802.11r
正解: D
質問 30
The three APs deployed on the first floor have channels from left to right, 1, 6, and 11, respectively. The channels of the three APs deployed on the second floor should be divided into.
- A. 2,7,12
- B. 11,6,1
- C. 1,6,11
- D. 6,11,1
正解: D
質問 31
What is the working frequency band used in the original 802.11 protocol?
- A. 2.4 GHz
- B. 900 MHz
- C. 2.0 GHz
- D. 5 GHz
正解: A
質問 32
For shared key authentication, the following description is wrong.
- A. After using shared key authentication, WEP encryption must be used.
- B. Shared key requires the user and AP to use the same shared key
- C. The disadvantage of shared key is that it is not scalable and not very secure.
- D. For thin APs, the shared key is preset in the AC.
正解: D
質問 33
Various pipes, metal keel and aluminum pinch in the ceilings will bring a greater impact on the actual effects of signal coverage.
- A. True
- B. False
正解: A
質問 34
For WLAN network configuration, which of the following statements is wrong?
- A. VAP template must be bound to the ap-group.
- B. When the users are procedding data programming, they need to ensure data programming in detail as far as possible, which can easy the late configuration greatly
- C. Before congifure AP, AP must be online
- D. Configure the security template to be bound to the VAP template.
正解: A
質問 35
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