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Huawei H12-311 Exam Dumps
HCIA-WLAN V3.0
Total Questions : 297
Update Date : September 02, 2024
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Huawei H12-311 Sample Question Answers
Question # 1To configure a WLAN service, you need to add an AC to the U2000.
A. True
B. False
Question # 2
The cable used in the project cannot theoretically exceed the meter.
A. 50
B. 80
C. 100
D. 150
Question # 3
Which of the following are factors that need to be considered for AP capacity planning(Select 3 Answers)
A. Equipment performance
B. Number of concurrent users
C. Bandwidth requirements
D. Power supply type
Question # 4
Which of the following features (BCD) (Select 3 Answers) is available for the HuaweiWLAN Planning Tool.
A. Support automatic identification and identification of obstacles
B. Support common coverage area and key coverage area division
C. Support automatic deployment of AP location
D. Support WLAN planning report for export specification
Question # 5
What are the general methods for solving co-channel interference (ABD) (Select 3Answers).
A. Adjust AP transmit power and adjust antenna feed
B. Reasonable frequency reuse to ensure that the same channel does not appear in thesame or adjacent coverage area
C. Multi-directional coverage using omnidirectional antennas
D. Natural isolation using obstacles
Question # 6
For the polarization of electromagnetic waves, the following description is correct (Select 3Answers).
A. The antenna radiates electromagnetic waves to the surrounding space, and the directionof the electric field changes according to a certain law.
B. The polarization of the antenna refers to the direction of the magnetic field strengthformed by the antenna radiation.
C. If the electric field of the electric wave is perpendicular to the ground, we call it avertically polarized wave.
D. If the transmitting antenna is circularly polarized, the receiving antenna must also becircularly polarized, and both polarization directions must be the same
Question # 7
The cable used in the project cannot theoretically exceed the meter.
A. 50
B. 80
C. 100
D. 150
Question # 8
To configure a WLAN service, you need to add an AC to the U2000.
A. True
B. False
Question # 9
When WLAN planning is performed in a single area, the factors affecting the number ofAPs deployed are (Select 3 Answers).
A. Number of people accessing in the area
B. Size of the area
C. Field strength and bandwidth requirements
D. Number of network ports
Question # 10
The following is not the AP binding template .
A. Radio frequency template
B. AP template
C. ESS template
D. Planning table template
Question # 11
Among the following obstacles, has the greatest loss of wireless signals.
A. Gypsum ceiling
B. Glass
C. 120mm Brick wall
D. 200mm Concrete wall
Question # 12
The size of the coverage area of the AP is controlled by means (Select 2 Answers).
A. Adjust the angle of the AP antenna
B. Adjust the transmit power of the AP
C. Adjusting the power supply of the AP
D. Adjusting the access bandwidth of the AP
Question # 13
Which of the following options are EDCA parameters (Select 2 Answers)?
A. AIFSN
B. SIFS
C. DIFS
D. TXOPLimit
Question # 14
If the AP's transmit power is 1mW, it is converted to dBm and then dBm.
A. 20
B. 1
C. 0
D. 10
Question # 15
How many management nodes (B) does the eSight Standard Edition support?
A. 60
B. 2000
C. 5000
D. 20000
Question # 16
The correct statement about WDS is (Select 2 Answers)?
A. Connect two separate LAN segments through a wireless bridge and provide datatransmission between them
B. WDS uses the 2.4GHz band as the bridge frequency band by default.
C. Scalability is good, and there is no need to lay new wired connections and deploy moreAPs
D. Huawei indoor AP does not support WDS function.
Question # 17
Which of the following WLAN signals pass through (Select 2 Answers).
A. Gypsum board
B. Glass window (colorless)
C. Concrete wall
D. Brick wall
Question # 18
The systematic process of AP RF resource management is.
A. Acquisition -> Decision -> Analysis -> Execution
B. Analysis -> Acquisition -> Decision -> Execution
C. Acquisition -> Analysis -> Execution -> Decision
D. Acquisition -> Analysis -> Decision -> Execution
Question # 19
The port number of the control packet of the CAPWAP tunneling protocol is
A. 1645
B. 1646
C. 5246
D. 5247
Question # 20
Metal objects have a greater attenuation of the wireless signal, and the AP or antennashould be placed behind a metal ceiling or the like.
A. True
B. False
Question # 21
The omnidirectional antenna exhibits a degree of on the horizontal pattern.
A. 90
B. 180
C. 360
D. 0
Question # 22
When the channel interference of the 2.4 GHz band is large and severe, the device isadjusted to 3 channels, which can effectively reduce interference.
A. True
B. False
Question # 23
Various pipes, metal keels and aluminum alloy gussets in the ceiling will have a greaterimpact on the actual signal coverage.
A. True
B. False
Question # 24
AP transmit power 20dBm, antenna gain 4dBi, cable and device loss 1dB, terminal receiveantenna gain 2dBi, spatial propagation loss 80dB, terminal receive level RSSI=.
A. -57
B. -56
C. -55
D. -54
Question # 25
In the direct connection network, the AP and the AC establish a CAPWAP tunnel. Themanagement flow must be encapsulated in the CAPWAP tunnel. The data service flow canbe encapsulated in the CAPWAP tunnel.
A. True
B. False
Question # 26
When an 802.11 packet sent by a STA enters the Ethernet through the AP, it is convertedinto an 802.3 packet, which is not a priority mapping method.
A. No priority mapping
B. Different priorities according to different VAP settings
C. According to the order in which the packets arrive at the AP
D. Map the priorities according to UP.
Question # 27
In China, the WLAN band supported by regulations is
A. 2.4-2.4835GHz
B. 5.15-5.25GHz
C. 5.25-5.35GHz
D. 5.725-5.850GHz
Question # 28
Among the following options, the common source of WLAN interference is (Select 3Answers).
A. Microwave oven
B. Remote control
C. C. Cordless telephone
D. Bluetooth transmission equipment
Question # 29
Which of the following are related parameters of the Traffic template (Select 2 Answers).
A. 802.3 Priority Mapping Policy
B. CAC Policy
C. Tunnel priority mapping strategy
D. ACK strategy
Question # 30
When wireless network engineers are planning for WLAN networks, the purpose of RFsimul-ation is (ABC) (Select 3 Answers).
A. Simulate signal coverage, find blind areas
B. Obtain field strength distribution at different locations
C. Obtain the current signal-to-noise ratio at different locations
D. Obtain the available bandwidth at different locations
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