2021 H12-311 Dumps PDF - H12-311 Real Exam Questions Answers
Valid H12-311 Test Answers & Huawei H12-311 Exam PDF
Huawei H12-311 Exam Syllabus Topics:
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| Topic 2 |
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| Topic 3 |
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NEW QUESTION 49
To upgrade an AP through FTP, you need to ensure that the AP and the FTP server can communicate with each other and put the AP upgrade file in the FTP root directory.
- A. False
- B. True
Answer: B
NEW QUESTION 50
CAPWAP is a public agreement, so Huawei AC can be used with AP from other manufacturers.
- A. False
- B. True
Answer: A
NEW QUESTION 51
When the two-channel center frequency distance is less than or equal to 25 MHz, there is an overlapping area between the channels, and there may be some interference. Therefore, in order to avoid adjacent channel interference in adjacent area channel planning, the same channel is not allowed.
- A. False
- B. True
Answer: A
NEW QUESTION 52
Which of the following is included in the CSMA/CA mechanism in 802.11 WLAN? (Multiple Choice)
- A. Conflict avoidance
- B. Conflict detection
- C. Carrier sensing
- D. Multiple access
Answer: A,C,D
NEW QUESTION 53
What is the maximum rate supported by the original 802.11 protocol?
- A. 0
- B. 5.5
- C. 1
- D. 2
Answer: C
NEW QUESTION 54
What is the recommended AC-ID for the Huawei wireless controller when configuring the WLAN service of the enterprise network?
- A. other (Other)
- B. cmcc (China Mobile)
- C. ctc (China Telecom)
- D. cuc (China Unicom)
Answer: C
NEW QUESTION 55
Which of the following are PoE's power supply standards? (Multiple choice)
- A. IEEE 802.3ae
- B. IEEE 802.3af
- C. IEEE 802.3at
- D. IEEE 802.3as
Answer: B,C
NEW QUESTION 56
What are the reasons why APs cannot go online (Select 3 Answers)?
- A. The configuration of the DHCP address pool is incorrect. The AP cannot obtain the address.
- B. The AP uses static discovery but the IP address of the AC is incorrect.
The version of - C. The controller adopts no-auth authentication mode.
- D. AP is inconsistent with the version of AC.
Answer: A,B,D
NEW QUESTION 57
In the WLAN, ACK frame belongs to what type of frame?
- A. Data Frame
- B. management frames
- C. Control Frame
- D. empty data frame
Answer: C
NEW QUESTION 58
Which of the following options is not the main purpose of roaming?
- A. avoid roaming in the process of certification time is too long lead to packet loss and even business interruption
- B. ensure that the user authorization information remains the same
- C. ensure that the user's network rate unchanged
- D. ensure that the user IP address remains the same
Answer: C
NEW QUESTION 59
CCMP encryption is more secure than TKIP encryption because of its security.
- A. Adopt a longer IV
- B. Added a message integrity check mechanism
- C. Adopting a more complex encryption algorithm
- D. Added a key distribution mechanism, no longer using a single key
Answer: C
NEW QUESTION 60
According to the different parameters of the control signal, what can be divided into by modulation mode? (Multiple Choice)
- A. PM
- B. AM
- C. FM
- D. SM
Answer: A,B,C
NEW QUESTION 61
MIMO antenna configuration is usually expressed as "M * N", what M and N each means? (Multiple choice)
- A. N means the number of transmitting antennas
- B. M means the number of transmitting antennas
- C. N means the number of receiving antennas
- D. M means the number of receiving antennas
Answer: B,C
NEW QUESTION 62
With which of the following ways does the antenna get the gain?
- A. Using high efficiency antenna feeders
- B. Equipment using low standing wave ratio
- C. Make the antenna radiation more concentrated
- D. Using a power amplifier in an antenna system
Answer: C
NEW QUESTION 63
The 802.11 physical layer standard defines some common operations of the wireless network at the physical layer, such as QoS, security, and roaming.
- A. False
- B. True
Answer: A
NEW QUESTION 64
How much bandwidth is each 802.11g frequency band channel?
- A. 22 MHz
- B. 25 MHz
- C. 20 MHz
- D. 50 MHz
Answer: C
NEW QUESTION 65
When deploy AP on several floors of a building, which of the following factors are needed to pay attention to? (Multiple Choice)
- A. in order not to affect beautiful, AP should be hidden in the ceiling
- B. other interfering signals
- C. unified planning channel
- D. the material of the wall
Answer: B,C,D
NEW QUESTION 66
The equipment manufacturer can usually be judged according to ( ).
- A. MAC address
- B. Channel
- C. SSID
- D. Encryption type
Answer: A
NEW QUESTION 67
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