Huawei H12-311_V3.0 Exam Practice Test Instant Access

Question 1

When a hardware failure occurs in an AP in the network, in order to avoid data reconfiguration, the user can quickly complete the AP replacement by configuring the AP.

replace.

ATrue

BFalse

Answer : A

Question 2

There are three ways to judge Huawei's load balancing: traffic mode, session mode, and virtual switching mode.

ATrue

BFalse

Answer : B

Question 3

For the lobe width, which of the following descriptions is correct is (). (Select 3 Answers)

AWithin the range of the main lobe, the power density relative to the maximum radiation direction is reduced by half (3dB) Angle

BThe narrower the lobe width, the better the directivity, the longer the radiation distance, the stronger the anti-interference ability

CThe pattern usually has two or more lobes

DOnly within the coverage of the half power angle, the terminal can receive the signal

Answer : A, B, C

Question 4

For the polarization of electromagnetic waves, which of the following descriptions is correct is (). (Select 3 Answers)

AThe antenna radiates electromagnetic waves to the surrounding space

BThe polarization of the antenna refers to the direction of the magnetic field strength formed when the antenna radiates
, The direction of the electric field changes according to a certain rule

CIf the electric field direction of the electric wave is perpendicular to the ground, we call it a vertically polarized wave

DIf the transmitting antenna is circularly polarized, the receiving antenna must also be circularly polarized, and the polarization direction of the two must be the same.

Answer : A, C, D

Question 5

AP Unavailable IP Common reasons for addresses are (). (Select 3 Answers)

AIncorrect address pool configuration

BAddress pool exhausted

CIntermediate network problem

DPOE Power failure

Answer : A, B, C

Question 6

The distance between the center frequencies of the two channels is less than or equal to

In order to avoid adjacent channel interference during domain channel planning, the same channel is not allowed to be used.

25MHz When there is an overlapping area between the channels, there will be some interference, so in the adjacent area

ATrue

BFalse

Answer : B

Question 7

What are the general methods to solve co-channel interference (). (Select 3 Answers)

Aadjust AP Transmit power, adjust antenna feeder

BReasonable frequency reuse to ensure that the same channel does not appear in the same or adjacent coverage areas

CUse omnidirectional antennas for coverage

DUse obstacles for natural isolation

Answer : A, B, D

Huawei H12-311_V3.0 HCIA-WLAN V3.0 Exam Practice Test