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1. Which of the following is not a method to increase the coverage signal strength range?

Adjust AP position

Reduce the transmit power

Adjust the antenna angle

Increase the transmit power

2. What is the core of the wireless medical positioning system ?

WIFI network

Positioning engine

TAG label

Monitoring platform

3. Pre-sales network planning is a kind of business development, not a big project generally does not need to be undertaken.

TRUE

FALSE

4. The 14 channels in 2.4 GHz only support the 802.11b protocol, which is only available in Japan.

TRUE

FALSE

5. In the VRRP hot backup scenario, which of the following description of the WAC 's CAPWAP source address is correct?

The address where the AP accesses the WAC is the physical address of the main WAC

WAC 's CAPWAP source address is the primary and standby WAC virtual address

Any address configured in WAC can be

The address where the AP accesses the WAC is the physical address of the standby WAC

6. When planning a LAN network and calculating the number of APs , only the bandwidth load needs to be considered.

TRUE

FALSE

7. Which of the following options is the most important reason for small and medium enterprises to use WLAN?

Video surveillance

Wireless office

Voice conference

Code scanning

8. In order to prevent network attacks based on source address spoofing, the binding table matching check is performed on the received IP packets to prevent illegal packets from passing through the AP and improve the security of the network. Which of the following functions can be enabled?

Dynamic ARP inspection function

Flood attack prevention function

ND Snooping function

AP 's IPSG function

9. The life cycle of Huawei's enterprise services has 5 different stages: Plan, Design, Implement, Operate, and Improve, referred to as PDTOI .

TRUE

FALSE

10. When deploying a WLAN network, a reasonable CCA threshold can be configured to reduce signal interference and increase the degree of channel reuse. If AP deployment is dense and you want to reduce the actual coverage area to ignore weak remote signals, and increase the CCA threshold.

TRUE

FALSE

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11. By default, the period for AP to send Beacon frames is 100 TUs.

TRUE

FALSE

12. What does the AP shown in the figure below belong to?

AP2010DN indoor panel AP

AP6010DN indoor released AP

AP6310DN indoor distributed AP

AP6510DN outdoor AP

13. In the WLAN Tester 2.0 heatmap, the tip box displays the information as shown in the figure below. According to the information in the figure, which statement is correct?

Tip displays the signal information around the point

Tip box must be placed on the heatmap for 3S and above to be displayed

The SINR and PHY Data Rate not shown in the Tip box are all 0

The Tip box only displays the SINR and PHY Data Rate of the maximum field strength value

14. As shown in the figure below, the best channel of the AP in the lower left corner should be planned as :

1 channel

6 channels

11 channels

14 channels

15. Which of the following descriptions about using the WLAN Tester 2.0 tool to conduct site surveys is correct?

New project → import drawing → set scale → load network card → start → dotting → end

New project → import drawings → load network card → set scale → start → dotting → end

New project → import drawing → set scale → start → dotting → end

New project → set scale → import drawings → load network card → start → end

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

AP6310SN Power Fraction Scheme

AP6310SN coupling scheme

AP9330DN room division plan

AD9430DN agile distributed solution

17. 20dBm converted into a power of 100mW , 23dBmconverted into a power

of200mW.

TRUE

FALSE

18. When planning indoor WLAN , it is recommended that the deployment height of omnidirectional antennas does not exceed 6m .

TRUE

FALSE

19. The fixed-length feeder used by AP9330DN has four specifications of 5m/10m/15m/20m . If it exceeds 20m, it needs to be cut to an appropriate length on site according to the actual situation.

TRUE

FALSE

20. In the WDS+ dual link scenario, the number of heartbeat packet detections should be set as:

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21. During the WLAN security planning, in order to support the self-registration of visitors, it is recommended that the authentication method which is set for visitors is:

WEB authentication

WPA-PSK

WEB-Portal authentication

dot1x authentication

22. Which of the following are not the rail transit redundant service design?

Train-ground wireless link redundancy

CBTC deploys dual wireless networks

PIS train-ground communication dual network

Use 802.11n protocol

23. In which of the following situations, the DHCP relay function must be enabled?

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

When the DHCP server needs security protection

When the terminal uses dotlx authentication

When the terminal is a visitor's web portal authentication

24. WLAN high-density venue services can achieve 100% user concurrency with a good experience .

TRUE

FALSE

25. A company wants to deploy outdoor WLAN, the AP equipment selected is Huawei outdoor AP6510DN. In order to save costs, engineers plan to directly supply power to the AP through AC6605. At this time, AC6605 just installed a 500W of PoE power modules, AC6605 work requires 120W of power, then how many AP6510DN can the AC6605 power?

26. Which of the following wireless applications has higher requirements to bandwidth and real-time?

Mobile office

Wireless medical

Rail transit

Video postback

27. Calculation formula of signal field strength (without considering factors such as interference and line loss) is:

Final signal field strength = antenna gain - transmission distance attenuation value - obstacle signal attenuation

Final signal field strength = AP transmit power + antenna gain - transmission distance attenuation value - obstacle signal attenuation

Final signal field strength = AP transmit power - transmission distance attenuation value - obstacle signal attenuation

Final signal field strength = AP transmit power + antenna gain + transmission distance attenuation value - obstacle signal attenuation

28. In a project, the two sites are 3km apart , but there is an 18m high building in the middle of the two points, and there are no higher obstacles in other locations. When using 5G backhaul, how many meters should the installation height of the two sites be at least?

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

TRUE

FALSE

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

TRUE

FALSE

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31. In outdoor WLAN deployment scenarios, channel design must consider radar channel interference.

TRUE

FALSE

32. What AP models can be used for indoor WLAN deployment?

AP5010SN

AP6010SN

AP6310SN

AP6510DN

33. In the WLAN outdoor coverage scenario, in order to ensure the balance of the uplink and downlink, which of the following is the most effective way?

Use a larger gain antenna

Reduce AP reflected power

Use an antenna with a smaller gain

Increase AP transmit power

34. A 5dB coupler has a coupling degree of 5dB and an insertion loss of 2dB . If the input signal power is 17dBm , the output power of the coupling port is :

10dBm

12dBm

14dBm

15dBm

35. The correct process of the WLAN network planning is:

Demand collection → pre-sale network planning → customer exchange quotation → detailed site survey → after-sale network planning

Demand collection → Pre-sale network planning → Detailed site survey → After-sale network planning

Demand collection → customer exchange quotation → detailed site survey → after-sales network planning

Demand collection → Pre-sale network planning → Customer exchange quotation

36. In WLAN outdoor scenarios, how many AT815SNs can be connected to AP6510DN at most?

37. In the AC dual-link cold standby network, when the priority of the active and standby ACs is the same, which condition will the AP compare to select the active AC first?

Compare the AP load on the AC , and prefer the AC with a small load as the main AC

Compare the size of the source IP of the AC , and prefer the AC with the smaller IP as the main AC

Comparison of AC traffic on select small flow of AC as the main AC

Compare the STA load on the AC , and prefer to select the AC with a small load as the main AC

38. Which of the following authentication methods has the best security?

WEP authentication

WPA2-PSK authentication

WPA2-EAP authentication

MAC authentication

39. How much mw can 17dBm be converted into?

100

40. In the active /standby dual link scenario, the default setting of CAPWAP heartbeat is :

15s * 6

25s * 3

20s * 3

25s * 6

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41. The indoor panel AP layout design must be equipped with 86 boxes for installation.

TRUE

FALSE

42. In the ACU2 solution of an independent AC board in a WLAN campus network project , the switch where the board is located and the ACU2 board are logically two independent network elements, that is, independent management equipment.

TRUE

FALSE

43. A certain park needs to achieve full WLAN coverage. The Park has a length and width of 100mx100m and a pole that can be installed in the middle. The capacity requirement is low. Which of the following antennas is most suitable for the above scenario?

H20_7dBi_V20

H360_3dBi_V22

H15_18dBi_V15

H360_11dBi_V9

44. In the HT40 mode, the main channel sends beacon messages and some data messages, and the auxiliary channel sends other messages.

TRUE

FALSE

45. Which of the following encryption algorithms has the highest security strength?

WEP

TKIP

CCMP

DES

46. On the Huawei modular switch S12708, the ACU2 board supports a larger AP capacity than the X1E board.

TRUE

FALSE

47. WLAN network planning in the financial industry needs to consider the planning and design of Monitor AP to enhance security.

TRUE

FALSE

48. What is the operating temperature range of Huawei outdoor AP8130DN?

-20 degrees Celsius ~ +55 degrees Celsius

-40 degrees Celsius ~ +60 degrees Celsius

0 degrees Celsius ~ +60 degrees Celsius

-40 degrees Celsius ~ +40 degrees Celsius

49. When using the WLAN planning tool, for areas that have coverage field strength requirements but do not have access to the number of people and bandwidth requirements, which type of area description should be used?

Key coverage areas

Normal coverage area

Dead zone

AP deployment area

50. WLAN survey when engineers need to determine the coverage of the target customer requirements, currently covered are: major coverage target, secondary coverage target and special target, the field strength in the coverage targe need to be between -65dBm ~ -85dBm .

TRUE

FALSE

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51. Under normal circumstances, when the material is the same thickness, which of the following obstacles will attenuate the 2.4GHz signal the most?

Metal

Asbestos

Wooden door

Tinted glass

52. In the WLAN wireless city scenario, the throughput test of the wireless terminal is performed. Under the same conditions, which of the following descriptions is correct?

TCP flow is larger than UDP flow

TCP flow is equal to UDP flow

TCP flow is smaller than UDP flow

Other options are wrong

53. In a room sub-system, using AP9330DN , each indoor antenna can be set to a different channel to avoid co-frequency interference.

TRUE

FALSE

54. Xiao Zhang is a network administrator of a hotel. One day he found that the hotel visitors could not access the network normally. After checking, he found that the visitor’s device got the wrong IP address. In order to prevent this kind of attack, which of the following technology should be used in the network?

DHCP Snooping

Dynamic ARP inspection (DAI)

IP source protection (IPSG)

MAC authentication

55. FAT AP is also called " fat " AP architecture or self-made structure. It is currently mainly used in large and medium-sized enterprise networks and is a mainstream architecture solution.

TRUE

FALSE

56. What is the default priority of VRRP?

100

255

57. Which of the following descriptions about the steps of Layer 2 roaming is wrong?

STA monitors each channel beacon, finds that AP2 meets the roaming conditions, and sends a probe request to AP2

After AP2 receives the request in channel 6 (the channel used by AP2), it responds by sending a response in channel 6

STA transmits 802.11 disassociation information to AP1 through channel 6 (the channel used by AP2), disassociate the user from AP1

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

58. Which of the following objects or materials has the greatest penetration loss for WLAN signals ?

Wooden door

Glass windows

Brick wall

Metal

59. Which of the following is wrong about the Fresnel zone?

The Fresnel zone of the radio wave beam is an ellipsoidal area directly surrounding the visible line of sight

The antenna installation position must ensure that the nodes on the two links are visible, and try to ensure that there are no obstructions in the Fresnel area

The nodes of the two sections of the site link are visible, and the blocked part of the Fresnel area boundary will not affect the link transmission effect

The sites are 2 kilometers apart , and the resulting Fresnel area is about 6 meters in radius

60. 400mW=()dBm

20dBm

23dBm

25dBm

26dBm

Page 7 of 7

61. The user traffic of an enterprise's WLAN is not very large, and there is no traffic bottleneck problem in the network. For WLAN security, customers want to manage WLAN data in a unified manner. Which of the following networking methods can the customer choose ?

AC bypass data direct forwarding

AC bypass data tunnel forwarding

Layer 3 network data direct forwarding

Layer 2 network data direct forwarding

62. If an enterprise wants to deploy WLAN without interrupting the business , please choose () controller as the best strategy: 500 wireless terminals for the enterprise , including laptops, smart phones, wireless cameras, etc.; enterprise switching network access layer is 3700 series switches, the core layer is 5700 series switches, and the company's export is NE20 routers; enterprises need to implement user grouping and QOS strategies.

Use AR3260 bypass as AC

Use AC6605 direct-connection as AC

Use AC6605 bypass as AC

Use ACU2+77 switch as AC

63. What kind of wireless frame is used when AP takes countermeasures against illegal terminals?

Beacon frame

Disassociate the frame

De-authentication frame

Probe frame

64. In the case of terminal support, which of the following encryption methods support fast roaming?

wpa+psk

wpa2+psk

wpa2+802.1x

wep

65. When AP8030DN is placed on the roof of a building to cover the outdoor area, it can usually cover the indoor area well.

TRUE

FALSE

66. For an open office area, there are 8 office areas, each office area has 10 people, each user requires a downlink bandwidth of 2Mbps , and the concurrent Internet access rate of all users is 80% . How many AP5030DNs are needed for this floor of office building ? The

measured rate ofeachAPis about80Mbps, without considering other factors such as attenuation and interference, only the number of APs is calculated from the bandwidth .

67. In the process of WLAN site survey personnel using WLAN Survery Pad engineering survey tool investigating, it needs to add the Pin to the location of the special information to be recorded. Pin label supports five major function of viewing records, photographs, text recording, voice recording and deleting marked.

TRUE

FALSE

68. A large enterprise wants to build an office network based on WLAN , and now wants to run a routing protocol between two core switches and multiple ACs . It requires the use of an open standard IGP protocol and supports the area division function. Which of the following protocols is the most preferred?

RIP

OSPF

EIGRP

BGP

69. How much dB is the angle at which the directional antenna attenuates the main lobe width of the phenomenon?

70. The transmit power of AP6310SN is 27dBm . After a two-power splitter (insertion loss 0.5dB), one port is connected to a 3dBi omnidirectional antenna, and the other port is connected to a 7dB i antenna, then the output power of the two antennas (without considering the feeder and interface loss) respectively are:

25dBm, 32dBm

26.5dBm, 26.5dBm

28dBm, 32dBm

26.5dBm, 30.5dBm