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H12-322 Questions and Answers

Question # 6

Usually, what is the attenuation of 2.4GHz at 10 meters?

A.

32dB

B.

53dBm

C.

71dBm

D.

92dB

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Question # 7

What are the precautions in using the WLAN Survery PAD survey tool for pre-sales network planning?

A.

There must be a survey of the construction environment and know the corresponding scale

B.

Label the obstacle information as detailed as possible, keeping it consistent with the actual environment.

C.

The customer's needs must be clear, and the actual number of people needs to consider the concurrency rate according to the actual situation.

D.

For some unclear information, the surveyor is required to estimate relevant information for surveying.

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Question # 8

In the backhaul scenario where the AP6510DN is connected to the AT815SN in point-to-point, the return distance is about 100m. The six AT815SNs are distributed in a length of 60 meters and wide.

Within 60 meters, the equipment is installed at the same height and has a line of sight.

When the upstream bandwidth requires 10 Mbps and there is no EIRP limit, which of the following antennas can be selected?

A.

5G_19dBi_H15 degrees _V15 degrees

B.

5G_17dBi_H65 degrees _V7.5 degrees

C.

5G_16dBi_H100 degrees _V5.5 degrees

D.

5G_28dBi_H5 degrees _V5 degrees

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Question # 9

In a school dormitory scenario, WLAN needs to be deployed. The customer proposes to maximize the bandwidth. Which of the following methods can best meet the needs of customers?

A.

AP6310SN power division scheme

B.

AP6310SN coupled solution

C.

AP9330DN room division program

D.

AD9430DN agile distributed solution

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Question # 10

If you use a layered network design method in enterprise network design, what are the three levels of network?

A.

Access layer

B.

Convergence layer

C.

Transport layer

D.

Core layer

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Question # 11

What is the default priority of VRRP?

A.

1

B.

0

C.

100

D.

255

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Question # 12

Which of the following options is not a scene-aware element of user access control in high-density?

A.

Who

B.

Where

C.

When

D.

Which

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Question # 13

Which of the following options are the design principles for WLAN outdoor sites?

A.

In the wireless relay application scenario, as long as the line of sight is reachable between the stations

B.

Avoid interference from strong electric and other signals near the site

C.

Site needs to have reliable power

D.

The higher the location of the site, the better.

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Question # 14

What are the two most important inputs in the WLAN pre-sales survey?

A.

AP

B.

Architectural drawings

C.

Planning tools

D.

Demand confirmation checklist

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Question # 15

During the WLAN survey, the engineer needs to determine the coverage target requested by the customer. The coverage currently includes: the main coverage target and the secondary coverage target.

And special targets, the field strength within the main coverage target needs to reach between -65dBm ~ -85dBm.

A.

True

B.

False

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Question # 16

A company deploys an outdoor WLAN. The AP device is Huawei's outdoor AP6510DN. In order to save costs, engineers plan to pass AC6605

Powering the AP directly. The AC6605 only has a 500 W PoE power module. The AC6605 requires 120 W for normal operation.

Rate, then how many AP6510DN can the AC6605 supply?

A.

4

B.

12

C.

20

D.

24

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Question # 17

In the coverage area, only the area where the field strength is required is selected (B), and the area with the specified number of bandwidth requirements is selected (A), and there is no concern whether there is a signal. Area selection?

A.

Key coverage areas

B.

Ordinary coverage area

C.

Blind area

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Question # 18

In the WDS and Mesh networks, in order to avoid interference of other signals on the backbone link, the 2.4 GHz band is generally used as the frequency band of the network backhaul.

A.

True

B.

False

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Question # 19

A park needs to achieve full coverage of WLAN. The length and width of the park is 100m×100m. There are clamps that can be installed in the middle. The capacity requirements are lower. Which of the following?

Which antenna is best for the above scenario?

A.

H20_7dBi_V20

B.

H360_3dBi_V22

C.

H15_18dBi_V15

D.

H360_11dBi_V9

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Question # 20

The following is true about the AP installation location?

A.

For aesthetic needs, priority can be given to placing the AP on the ceiling.

B.

If the site is a monolithic ceiling, the AP should be considered as close to the maintenance port.

C.

The material of the ceiling is generally thin, and the impact on the cover is negligible.

D.

When wall-mounting or installing under the ceiling, it may be necessary to punch holes. When surveying, try to confirm with the property whether it is feasible.

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Question # 21

Which two APs below support the 802.11ac standard?

A.

AP5030DN

B.

AP5130DN

C.

AP6510DN

D.

AP7110DN

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Question # 22

What is the correct WLAN network planning process?

A.

Demand Collection -> Pre-sales Net Gauge -> Customer Exchange Quotation -> Detailed Survey -> After-sales Net Gauge

B.

Demand Collection -> Pre-sales network rules -> Detailed engineering survey -> After-sales network rules

C.

Demand Collection -> Customer Exchange Quote -> Detailed Survey -> After-sales Net Gauge

D.

Demand collection -> Pre-sales network rules -> Customer exchange quotes

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Question # 23

Which of the following channels and adjacent channels have adjacent channel interference?

A.

1

B.

4

C.

6

D.

8

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Question # 24

In a certain room subsystem, using the AP9330DN, each incoming antenna can be set to a different channel to avoid co-channel interference.

A.

True

B.

Falses

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Question # 25

In the active/standby dual-link scenario, the default CAPWAP heartbeat is set to?

A.

15s * 6

B.

25s * 3

C.

20s * 3

D.

25s * 6

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Question # 26

In any country, the use of directional antennas can significantly increase the coverage area of ​​the WLAN.

A.

True

B.

False

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Question # 27

The following is the correct description of the AC deployment method?

A.

AC deployment can be divided into two types: side-by-side deployment and direct-attached deployment.

B.

The side-by-side networking is a superposition of the existing network. It has fewer modifications to the existing network and is quick and convenient to deploy. In addition, according to the control requirements for wireless users,

Choose direct forwarding or tunnel forwarding mode according to your needs

C.

In the direct connection network deployment mode, because the AC is connected in series in the network, the management data and user data between the AP and the AC must pass.

CAPWAP tunnel forwards

D.

Direct connection networking is mainly used in large campus network scenarios. The AP size in the network is recommended to be 1000 or more.

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Question # 28

For WLAN outdoor coverage planning, what is the recommended coverage radius when using an external 2.4G 3dBi omnidirectional antenna?

A.

30~50 meters

B.

80~100 meters

C.

150~200 meters

D.

200~250 meters

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Question # 29

Which of the following is best for deploying WLANs using indoor distribution?

A.

Factory building

B.

Office

C.

University single row dormitory D. Square

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Question # 30

When using two ACs for VRRP networking, in order to assign the correct address and gateway to the AP, which of the following address allocation schemes cannot be used?

A.

Statically specified address scheme

B.

DHCP interface pool solution

C.

DHCP global pool solution

D.

DHCP relay solution

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Question # 31

The United States complies with the FCC standard. In an outdoor road scenario, an AP8030DN uses channels 1 and 149 for road coverage, and a single spatial stream terminal is connected.

In the case of considering the MIMO gain, regardless of the feeder loss, what is the maximum transmit power of the AP 2.4 GHz and 5 GHz, respectively?

A.

2.4GHz -22dBm, 5GHz -20dBm

B.

2.4GHz -21dBm, 5GHz -15dBm

C.

2.4GHz -20dBm, 5GHz -14dBm

D.

2.4GHz -20dBm, 5GHz -20dBm

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Question # 32

The AC is configured as follows. How long does it take to open RTS/CTS when the length of the packet exchanged between the terminal and the AP?

[AC6605-wlan-view] radio-2g-profile name default

[AC6605-wlan-radio-2g-prof-default] rts-cts-mode rts-cts

[AC6605-wlan-radio-2g-prof-default] rts-cts threshold 1500

A.

<1500 Byte

B.

1500 Byte

C.

>1500 Byte

D.

1024 Byte

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Question # 33

Users use the WLAN Tester 2.0 tool to perform the survey and must load the network card before starting the survey.

Regarding the NIC loading, the following statement is correct?

A.

The network card must be loaded before each survey.

B.

After opening the tool, you only need to load the network card once.

C.

After entering the tool for the first time, the network card must be loaded when starting the survey.

D.

After opening the tool to load the network card, the second network card will be loaded automatically, but there is an interval between them.

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Question # 34

Which of the following devices has an internal antenna?

A.

AP6510DN

B.

AP8030DN

C.

AP8130DN

D.

AT815SN

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Question # 35

Which of the following outdoor APs supports dual 5G deployment scenarios?

A.

AP6510DN

B.

AP8030DN

C.

AP8130DN

D.

AP9430DN

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Question # 36

Which of the following are typical of AP coverage in high-density venues?

A.

Ceiling coverage

B.

Base cover

C.

Ceiling coverage

D.

Wall covering

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Question # 37

When the AD9430DN-24 is deployed in the project, when the remote access unit R240D is installed and exceeds the PoE power supply distance, the switch can be expanded.

exhibition.

A.

True

B.

False

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Question # 38

What is wrong about the description of antenna azimuth and downtilt below?

A.

Azimuth specifies the coverage direction of the antenna

B.

Azimuth can be understood as the angle that the plane in the north direction rotates clockwise to coincide with the plane of the antenna.

C.

Downtilt angle affects the coverage of the antenna in the vertical direction

D.

The downtilt angle is the angle between the antenna and the vertical plane

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Question # 39

Which of the following devices can be used as PDs?

A.

Wireless AP

B.

PoE switch

C.

AC6605

D.

VoIP phone

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Question # 40

Which of the following options are characteristic of the business needs of high-density venues?

A.

Multiple types of business access control

B.

There are many user terminals, and the types are concentrated.

C.

Users only connect in a certain area, no need to consider roaming

D.

Large number of user registration management, centralized user authentication

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Question # 41

Directional antennas have a stronger gain in signal strength in horizontal and vertical lobes, and no signal outside the lobes. So it is recommended to use high gain

Directional antennas to increase outdoor AP coverage distance.

A.

True

B.

False

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Question # 42

The following is a statement about the combination of the WLAN room subsystem and the existing operator room system. What is wrong?

A.

The WLAN signal is not in the same frequency band as the GSM, CDMA, 3G and other signals, and the combiner has a high isolation, so the signal between different frequency bands

No interference with each other

B.

Existing room division devices (power splitter/coupler/antenna) need to support the 2.4G frequency band of WLAN, otherwise the room division device needs to be replaced.

C.

If the operator's signal can meet the coverage requirements, it can usually be satisfied after accessing the WLAN signal.

D.

There must be a parallel topology relationship between the APs, and multiple APs are not allowed to be connected in series on one branch.

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