Download Huawei H12-311-ENU Sample Questions [Nov-2022]
Real H12-311-ENU Exam Questions and Answers FREE
NEW QUESTION 119
The following statement about antenna classification is correct (Select 2 Answers)?
- A. Classification by use: short wave antenna, ultrashort wave antenna, microwave antenna, etc.
- B. Classification by shape: wire antenna, planar antenna, etc.
- C. Classification by direction: omnidirectional antenna, directional antenna, etc.
- D. Classification by working frequency band: communication antenna, TV antenna, radar antenna, etc.
Answer: B,C
NEW QUESTION 120
How many subcarriers can 802.11n use to transmit data in 20M mode?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 121
After the wireless user connects to the wireless signal point, the IP address cannot be obtained. What are the possible reasons? (Multiple Choice)
- A. User specified authentication password is incorrect
- B. The wrong service vlan is configured.
- C. MAC address of the user device has been blacklisted.
- D. DHCP server is not configured in the VLAN where the user is located.
Answer: B,D
NEW QUESTION 122
Which of the following are related parameters of the Traffic template (Select 2 Answers).
- A. CAC Policy
- B. Tunnel priority mapping strategy
- C. ACK strategy
- D. 802.3 Priority Mapping Policy
Answer: B,D
NEW QUESTION 123
The CAPWAP protocol is a WLAN standard proposed by the IEEE standards organization in April 2009 for communication between AC and thin APs.
- A. True
- B. False
Answer: B
NEW QUESTION 124
In terms of PoE, AP belong to which?
- A. PD
- B. PI
- C. PSU
- D. PSE
Answer: A
NEW QUESTION 125
Which two kinds of Basic Service Set are included in BSS? (Multiple Choice)
- A. Independent Basic Service Set
- B. Extension Structure Pattern Basic Service Set
- C. Extend Basic Service Set
- D. Infrastructure Structure Pattern Basic Service Set
Answer: A,D
NEW QUESTION 126
Which of the following can be done to protect WLAN security (Select 3 Answers)?
- A. Control traffic
- B. System protection
- C. Encryption
- D. Authentication
Answer: B,C,D
NEW QUESTION 127
What are the prerequisites for users to implement Layer 3 roaming (Select 3 Answers)?
- A. Two APs for user roaming switch must have the same VLAN
- B. The SSID released by the two APs of the user roaming switch must have the same authentication method.
- C. The two APs of the user roaming switch must have the same SSID.
- D. User roaming requires two AP signals to be covered with overlapping areas
Answer: B,C,D
NEW QUESTION 128
Which country or region is ETSI a standard organization?
- A. USA
- B. China
- C. Europe
- D. Japan
Answer: A
NEW QUESTION 129
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
Answer: B
NEW QUESTION 130
In a point-to-multipoint networking environment, one device acts as a central device, and all other devices establish wireless bridges with the central device to interconnect multiple networks. The disadvantage is that the interworking of multiple branch networks requires data forwarding through the central bridge device.
- A. True
- B. False
Answer: A
NEW QUESTION 131
When deploy AP on several floors of a building, which of the following factors are needed to pay attention to? (Multiple Choice)
- A. unified planning channel
- B. the material of the wall
- C. in order not to affect beautiful, AP should be hidden in the ceiling
- D. other interfering signals
Answer: A,B,D
NEW QUESTION 132
What type of frame does the ACK frame belong to in the WLAN?
- A. Control frame
- B. Empty data frame
- C. Data frame
- D. Management frame
Answer: A
NEW QUESTION 133
Which of the following option is a prerequisite for starting load balancing function based on AP?
- A. STA can scan AP which can process load balancing each other
- B. The output power of the AP is consistent.
- C. AP is under the management of same AC, and signal has overlap between AP
- D. AP belongs to the same type
Answer: C
NEW QUESTION 134
What are the wireless LAN standards that support the 5GHz band (Select 2 Answers)?
- A. 802.11g
- B. 802.11n
- C. 802.11a
- D. 802.11b
Answer: B,C
NEW QUESTION 135
In the 802.1 X protocol, you must have () to complete the user authentication and authorization.
(Multiple choice)
- A. authenticator
- B. eSight Server
- C. client
- D. authentication server
Answer: A,C,D
NEW QUESTION 136
Engineer A purchased a batch of Huawei APs that support WDS. When the WDS network was formed, the bridge could not be established successfully. Which of the following is the possible reason?
- A. The channels of the two APs are different.
- B. The SSIDs of the two APs are different.
- C. The models of the two APs are different.
- D. The power of the two APs is different
Answer: A
NEW QUESTION 137
Which of the following commands can view the current AP license resource usage?
- A. display license state
- B. display license resource usage
- C. display ap all
- D. display license esn
Answer: B
NEW QUESTION 138
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