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Huawei H12-322 Dumps

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Total 282 questions
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Huawei Certified ICT Professional - Wireless Local Area Network- Planning and Optimizing Enterprise WLAN Questions and Answers

Question 1

Which layer of the wireless AP is generally connected to the network?

Options:

A.

Access layer

B.

Convergence layer

C.

Transport layer

D.

Core layer

Question 2

What is the purpose of using the WLAN Tester 2.0 tool to conduct a survey in the early stage of the project?

Options:

A.

Understand signal coverage

B.

Understanding signal interference

C.

Understand the shortcomings of the current network environment

D.

Perform network verification

Question 3

In the case of dense WLAN users and a large number of APs, when using the 2.4G band coverage, the HT40 mode can be used to increase the bandwidth.

Options:

A.

True

B.

False

Question 4

Which of the following is true about the WLAN Survey Pad tooling method?

Options:

A.

Supporting finger operations during the process of drawing obstacles, moving the scaled drawings to find the best position to draw obstacles, does not support increasing obstacle types

B.

The industrial survey tools and planning tools need to be used together. First, get the drawings, first use the planning tools to make a simple plan for the project, and then take the Pad to the present.

Work on the site, then export the project and import it into the planning tool for further planning.

C.

Create a new project, select the floor node, see the corresponding building thumbnail in the preview box on the right, click on the thumbnail to enter the selected floor to supplement the survey information.

D.

Pad's industrial survey tools and planning tools are suitable for pre-sales network regulations, and WLAN test tools are used for post-production verification before delivery.

Question 5

In the 3-hop co-frequency chain Mesh, assuming that the throughput of the MPP is 60 Mbps and the throughput under each MP is the same, the throughput of each MP is

How many?

Options:

A.

5Mbps

B.

10Mbps

C.

15Mbps

D.

20Mbps

Question 6

The AP number is calculated only from the bandwidth without considering other factors such as attenuation and interference. Take 802.11n as an example: the measured rate of each AP.

About 100Mbps, there are 10 office areas in an office building, 40 people per office area, and customers require bandwidth per terminal.

2Mbps, all users online companion rate is calculated according to 70%, how many APs are needed for the office building?

Options:

A.

4

B.

5

C.

6

D.

7

Question 7

In the WLAN network design, the following is the correct design for the cable?

Options:

A.

The network cable between the AP and the switch should be no more than 100 meters long. In some cases, it should not exceed 80 meters.

B.

When calculating the length of the network cable, it is just right to switch from the switch to the AP.

C.

Keep away from strong electric and magnetic wires

D.

Communicate with customers in advance to avoid the possibility of construction due to property or aesthetic requirements

Question 8

In the process of AC dual link building, what information does the AP organize?

Options:

A.

AC IP address

B.

AC active and standby priority

C.

AC dual link feature switch

D.

AC MAC address

E.

AC model

Question 9

What is the difference between the center frequency values ​​of two adjacent channels at 2.4 GHz?

Options:

A.

20MHz

B.

22MHz

C.

5MHz

D.

25MHz

Question 10

Which of the following authentication methods need to deploy a RADIUS server?

Options:

A.

WEP certification

B.

WPA+PSK certification

C.

MAC certification

D.

WPA-EAP certification

Question 11

In order to enable visitors to access the Internet through the WLAN network, the global pool is used to assign addresses to users. The following are not mandatory?

Options:

A.

Network

B.

Gateway-list

C.

DNS-list

D.

Option 43 sub-option 3

Question 12

The transmit power of an AP radio is 100mW, the loss of the link feeder is 3dB, and the gain of the antenna is 7dBi. What is the EIRP of the antenna?

Options:

A.

200mW

B.

250mW

C.

300mW

D.

400mW

Question 13

The following description of the WLAN outdoor AP is wrong?

Options:

A.

AP8030DN cannot be connected to an external antenna.

B.

AP6610DN supports PoE power supply

C.

AP8130DN has 4 RF ports

D.

AP6510DN supports 11a/b/g/n/ac protocol

Question 14

What type of radio frame is used when the AP performs a counteraction against an illegal terminal?

Options:

A.

Beacon frame

B.

Disassociation frame

C.

Deauthentication frame

D.

Probe frame

Question 15

Which of the following options are issues that should be noted in WLAN roaming planning?

Options:

A.

Mobile terminal can confirm roaming

B.

Ensure that the signal coverage overlap range is greater than 50% on the path of terminal roaming

C.

The path of the terminal roaming is guaranteed to be the same.

D.

Type of roaming terminal

Question 16

In a WLAN campus network project, the engineer adopts the solution of the AC with the board. If this solution is adopted, the engineer can pass the X1E board.

Manage APs that are accessed from other non-X1E boards.

Options:

A.

True

B.

False

Question 17

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.

Options:

A.

True

B.

False

Question 18

A three-story office needs to plan a WLAN. After the site survey is completed, the engineer decides to place three APs on each floor. The letter about the three floors.

Is the road planning correct?

Options:

A.

1， 6， 11 / 6， 11， 1 / 11， 1， 6

B.

1， 11， 6 / 6， 11， 1 / 11， 1， 6

C.

1， 6， 11 / 6， 1， 11 / 11， 1， 6

D.

11， 1， 6 / 1， 6， 11 / 6， 11， 1

Question 19

The following is about the site survey of the outdoor bridge backhaul project. Is the correct statement?

Options:

A.

Pay attention to the installation conditions of the leaf site during the survey, including AP, antenna installation height, power supply mode, etc.

B.

If the leaf node still needs to be covered by hotspots, it is necessary to install the survey content of the outdoor coverage to survey the coverage area environment.

C.

The aggregation node can connect to the root node as much as possible to ensure that the bridge has sufficient bandwidth.

D.

The path between the sites should be directly visible

Question 20

Which of the following options are inherent properties of the antenna?

Options:

A.

Horizontal lobes, vertical lobes

B.

Downtilt angle

C.

Azimuth

D.

Gain

Question 21

When WLAN design outdoor network regulations, it is necessary to consider the coverage according to the EIRP limit of each country. In the case of considering MIMO gain, the following

Which option is the calculation method for EIRP?

Options:

A.

AP transmit power + antenna gain - feeder attenuation

B.

AP transmit power - antenna gain - feeder attenuation

C.

AP transmit power - MIMO gain + antenna gain - feeder attenuation

D.

AP transmit power + MIMO gain + antenna gain - feeder attenuation

Question 22

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

Options:

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.

Question 23

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

Options:

A.

30~50 meters

B.

80~100 meters

C.

150~200 meters

D.

200~250 meters

Question 24

Which of the following encryption methods supports fast roaming when the terminal supports it?

Options:

A.

wpa+psk

B.

wpa2+psk

C.

wpa2+802.1x

D.

wep

Question 25

The following is the correct principle for the deployment of WLAN outdoor sites.

Options:

A.

The site should be directly visible between the coverage areas. It is recommended that there should be no obstacles to block.

B.

To ensure signal transmission, the site installation height is as high as possible

C.

Avoid interference from strong electric and other signals near the site

D.

Reliable power is required near the site

Question 26

Which of the following scenarios is suitable for using the board AC as a wireless controller?

Options:

A.

Overlay wireless network construction scenario based on existing cable bearer network

B.

Unified construction and unified transformation of wired and wireless networks

C.

Unified management of wired and wireless users

D.

Scenes for independent management of wired and wireless services

Question 27

Regarding the functions of the Huawei WLAN Survey PAD survey tool, is the following statement correct?

Options:

A.

Pad survey tool can generate network gauge report, AP list, bill of materials

B.

Pad survey tool export project is to re-import the post-construction project into the planning tool for further planning, and then import it into the WLAN.

Tester 2.0 tool compared to actual collected data

C.

Wi-Fi interference source location and power test functions are available for both the WLAN Planner tool and the Pad tool.

D.

For a building, using the Pad survey tool for the obstacle attenuation test, the surveyor is required to test each obstacle.

Question 28

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

Options:

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

Question 29

In the WLAN Tester 2.0 heat map, the tip box displays the following information. According to the information in the figure, the following statement is correct?

Options:

A.

Tip shows the signal information around the point

B.

Tip box must be placed on the heat map for 3S and above to display

C.

The SINR and PHY Data Rate that are not displayed in the Tip box are 0.

D.

Tip box only shows the SINR and PHY Data Rate of the maximum field strength value.

Question 30

Xiao Zhang is the network administrator of a hotel. One day he found that the hotel's visitors could not access the network normally. After checking, the visitor's equipment was wrong.

Incorrect IP address, in order to prevent this kind of attack, which of the following technologies should be used in the network?

Options:

A.

DHCP Snooping

B.

Dynamic ARP Detection (DAI)

C.

IP Source Protection (IPSG)

D.

MAC certification

Question 31

Which of the following three formats can be planned with the WLAN planning tool?

Options:

A.

Google Earth

B.

Bitmap (jpg, gif, bmp, etc.)

C.

PDF drawings

D.

Vector graphics ( ai, odr, etc.)

Question 32

In which of the following cases must the DHCP relay function be enabled?

Options:

A.

When the DHCP server and the terminal are not in the same VLAN

B.

When the DHCP server is to be secured

C.

When the terminal is using dot1x authentication

D.

When the terminal is a guest's web portal authentication

Question 33

Which of the following technologies can be used in a WLAN high-density deployment scenario?

Options:

A.

Turn on 2.4G and 5G dual frequency

B.

Increase AP transmit power

C.

Turn on pure N mode

D.

Turn on the signal threshold access

E.

Using room divider antenna

Question 34

Which two APs below support the 802.11ac standard?

Options:

A.

AP5030DN

B.

AP5130DN

C.

AP6510DN

D.

AP7110DN

Question 35

In the WLAN coverage, the accuracy of wireless positioning is closely related to AP signal coverage.

Options:

A.

True

B.

False

Question 36

400mW = () dBm?

Options:

A.

20dBm

B.

23dBm

C.

25dBm

D.

26dBm

Question 37

The WLAN high-density venue business can achieve 100% concurrent users under a good experience.

Options:

A.

True

B.

False

Question 38

The following description of the steps for Layer 2 roaming is wrong?

Options:

A.

The STA listens to each channel beacon and finds that AP2 satisfies the roaming condition and sends a probe request to AP2.

B.

AP2 responds by sending a response on channel 6 after receiving the request in channel 6 (the channel used by AP2)

C.

The STA sends the 802.11 disassociation information to the AP1 through the channel 6 (the channel used by the AP2), and the association between the user and the AP1 is released.

D.

The STA sends an association request to AP2 through channel 6, and AP2 responds with the association response to establish an association between the user and AP2.

Question 39

Which of the following are the items that need to be concerned about surveying indoor coverage scenarios?

Options:

A.

Bandwidth requirements of the coverage area

B.

The transmission path of the bridge link has no occlusion

C.

Location of weak electricity room

D.

Whether to add a relay between the leaf site and the aggregation site

Question 40

Which of the following objects or materials has the highest penetration loss to WLAN signals?

Options:

A.

Wooden door

B.

Glass window

C.

Brick wall

D.

Metal

Question 41

FAT AP is also called "fat" AP architecture or self-contained structure. It is mainly used in large and medium-sized enterprise networks and belongs to mainstream architecture solutions.

Options:

A.

True

B.

False

Question 42

What is wrong about the Fresnel region?

Options:

A.

The Fresnel zone of the radio beam is an ellipsoidal region that surrounds the visible line of sight directly.

B.

The antenna installation position should ensure that the two nodes of the link are visible, and try to ensure that there is no obstruction in the Fresnel zone.

C.

Two nodes of the site link are visible, and the Fresnel zone boundary is blocked, which will not affect the link transmission effect.

D.

The distance between the stations is 2 kilometers, and the radius of the Fresnel area is about 6 meters.

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