Wireless Network and Internet of Things Test Question 1

1. Multiple choice questions (1 point )

The correct operation steps to configure the radio 1 channel of AP1 to 6 in the H3C wireless controller is () .

[H3C] wlan ap ap1 radio 1

[H3C-wlan-ap-ap1-radio-1] channel 6

[H3C]wlan ap ap1 radio 1 channel 6

[H3C]wlan ap ap1

[H3C-wlan-ap-ap1]radio 1

[H3C-wlan-ap-ap1-radio-1]channel 6

[H3C]wlan ap ap1

[H3C-wlan-ap-ap1]radio 1 channel 6

Correct answer: C

2. Multiple choice questions (1 point )

Need to pay attention to () when using AP for wireless bridging .

Whether the distance between APs is appropriate and whether there are obstacles in the middle

Both APs must work on the same channel

Are the angles of the antennas at both ends aligned?

The local AP correctly configures the MAC address of the peer AP , that is, peer-mac

Correct Answers: A,B,C,D

3. Multiple choice questions (1 point )

In order to reduce the impact of the surrounding environment and ensure the stability of the wireless bridge device , which frequency band is usually used to stabilize the bridge application ; what are the requirements for the working channels of the two bridge devices at the same time. ()

2.4Ghz, can be different

5.8Ghz, must be the same

5.8Ghz, can be different

2.4Ghz, must be the same

Correct answer: B

4. Multiple choice questions (1 point )

"WPA- Personal " or "WPA2- Personal " network authentication method is to use () to prevent unauthorized network access , generally need to enter a text phrase with 8 to 63 characters.

WEP

PEAP

EAP-TLS

PSK

Correct answer: D

5. Multiple choice questions (1 point )

The best way to determine the signal propagation distance between wireless devices is ( ) .

Using the Path Loss Calculation Formula

Conduct a thorough site survey

Estimating RF Signals Using Intense Linear Light Sources

visual distance

Correct answer: B

6. Multiple choice questions (1 point )

For a wireless dense user area, which of the following is the best way to improve the bandwidth and performance of each user

none of the above

increase antenna gain

Add APs and load balance between APs

Increase transmit power

Correct answer: C

7. Multiple choice questions (1 point )

In the network configuration of the wireless controller and the thin AP , what command can be used to view the detailed information of the client connected to the AP with the specified name ? ()

display wlan client ap ap-name verbose

display wlan client verbose

display wlan client service-template service-template-number verbose

display wlan client mac-address mac-address verbose

Correct answer: A

8. Subjective questions (9 points )

AC+FIT AP layer 3 registration process , if the AP can be assigned an IP address , but the AC cannot identify the AP . Analyze and write two possible configuration problems.

my answer

Whether the VLAN network connected to the Fit AP can dynamically obtain an address; whether the DHCP server in the network where the Fit AP is located is unique;

9. Multiple choice questions (1 point )

If fault tolerance and availability are very critical in the WLAN network , then it needs to be enabled () in the network .

L2/L3 roaming

load balancing

Rogue AP detection

Hot Standby of AP Devices

Correct Answers: A,B,C,D

10. True or false (1 point )

There may be some differences between the AP deployment locations during the survey and the actual AP deployment locations during project implementation . In order to ensure the accuracy of the survey data , the deployment position of the AP during the survey should be as consistent as possible with the actual installation position. ( )

Correct answer: correct

11. Multiple choice questions (1 point )

The survey and design of wireless network is the key link in the implementation of WLAN project. A good survey and design scheme can be ( ) .

Improve equipment usage efficiency , thereby increasing customer return on investment

Reduce the maintenance workload of the wireless network

Thoroughly solve the problem of interference sources in wireless networks

Ensure the stable operation of the wireless network

Correct Answers: A,B,D

12. Multiple choice questions (1 point )

In the process of wireless network survey , the following statement is correct () .

When deploying multiple APs indoors , in order to ensure a good signal strength index , the AP should work at the maximum transmit power , and at the same time, attention should be paid to the channel division between APs .

When deploying multiple APs indoors , to meet the wireless application requirements of a certain user density , it is necessary to select the appropriate AP installation location, installation method, transmission power, etc. , so as to reduce the number of visible signals in the three-dimensional space as much as possible.

When planning signal coverage in three-dimensional space , the problem of signal leakage across layers is unavoidable. Therefore , the degradation of wireless link quality caused by signal leakage needs to be considered and optimized.

When conducting wireless network survey , it is necessary to ensure that the coverage area is the same as the actual application demand area. When the coverage of the signal is affected by obstacles and the coverage of the wireless signal cannot meet the actual application requirements , the deployment plan needs to be adjusted in time.

Correct Answers: B,C,D

13. Multiple choice questions (1 point )

Which of the following commands can view the details of AP registration in the H3C wireless controller , such as the IP address obtained by the AP ?()

display wlan AP serial-id all

display wlan AP all

display wlan AP all verbose

display wlan client

Correct answer: C

14. True or false (1 point )

Mount the antenna on a high place and maintain a certain downward angle to cover the outdoor space ; it is suitable for WLAN coverage in open / semi-open outdoor areas . ( )

Correct answer: correct

15. Multiple choice questions (1 point )

The following description of the wireless roaming navigation function is wrong () .

Roaming navigation has the effect of improving roaming sensitivity , so it is recommended to enable roaming navigation in all scenarios.

The roaming navigation implementation mechanism is to do special processing on the Probe response message sent by the AP , and create conditions to promote the client's roaming.

Whether the wireless client is roaming or not is finally determined by the client network card according to the change of signal strength.

Some clients are not sensitive to roaming , they will still connect to the AP with weaker signal even when there is an AP with stronger signal , and will not actively switch to the signal. In order to deal with this situation , you can enable the roaming navigation function.

Correct answer: A

16. Multiple choice questions (1 point )

Whether the wireless terminal roams depends on the ruling mechanism driven by the client . For the Intel wireless network card , when the " roaming initiative " is set to () , the wireless client will no longer be sensitive to switching , and will only switch to another network when the link quality drops . an access point.

highest value

any value

lowest value

Defaults

Correct answer: C

17. Multiple choice questions (1 point )

In the wireless network survey and design , when covering the floors and areas with business needs , the received signal strength of more than 95% of the target coverage area should be greater than or equal to the number ( empirical value , applicable to most wireless network cards ), and the key coverage The area signal strength should be greater than or equal to how much. ()

-75dBm;-70dBm

-80dBm;-75dBm

-90dBm;-85dBm

-85dBm;-80dBm

Correct answer: A

18. Multiple choice questions (1 point )

When the AP is directly connected to the wireless switch or connected through a layer 2 network, the correct registration procedure is ( ) .

1. The AP sends a Layer 2 broadcast discovery request message to try to contact a wireless switch

2. The AP downloads the latest software version and configuration from the wireless switch

3. The wireless switch that receives the discovery request message will check whether the AP has the right to access the local machine, and if so, it will respond with a discovery response

4. AP obtains IP address through DHCP server

5. The AP starts to work normally and exchanges user data packets with the wireless switch

41325

14235

41235

12345

Correct answer: A

19. Subjective questions (9 points )

Write out 10 viewing commands (beginning with display ) that you have used on the command line , and explain the meaning. The command must be written in full.

1. display this #View the currently configured commands

2. display current-configuration #View all configurations

3. display ip interface brief #View the ip of the interface

4. display interface brief #View interface configuration information

5. display ip routing-table #View routing table

6. display mac-address #View MAC table

7. display arp #View ARP table

8. display ospf peer brief #View ospf neighbor relationship

9. display interface Eth-Trunk #View link aggregation status

10. display clock #View the current time of the system

11. display saved-configuration #Display saved configuration files

20. Multiple choice questions (1 point )

In the 11i standard , the protocol that needs to be encrypted by hardware is () .

PSK

WEP

TKIP

AES

Correct answer: D

21. Multiple choice questions (1 point )

During the Layer 2 registration of the Fit AP , it is found on the AC that the AP is in the Idle state . The possible reasons are () .

The AP software version carried by the AC does not match the AC software version

The Fit AP and AC are not in the same VLAN

The Fit AP is not powered on

The serial number or model information of the Fit AP template is incorrectly configured on the AC .

There is no DHCP server in the network

Correct Answers: A,B,C,D,E

22. Subjective questions (9 points )

Describe the registration process when the AP is directly connected to the AC or through a Layer 2 network. Silently write out the list of commands required for this experimental configuration.

1) After the Fit AP is powered on, it dynamically obtains its own IP address through DHCP , and the DHCP Server sends the DHCP-Offer message to the Fit AP to carry the option43 field, which contains the IP address information of the wireless switch.

2) Fit IP obtains the IP address of the wireless switch from the Option43 field , and then sends a unicast discovery request to the wireless switch.

3) After receiving the discovery request of the Fit AP, the wireless switch will check the access rights of the AP , and if the AP has the access rights, it will send a response message, and the data exchange between the Fit AP and the wireless switch will be realized.

23. Multiple choice questions (1 point )

The correct description of the area with small radius and few concurrent users is () .

Such areas generally have a radius of less than 60m , and there are not many users accessing them.

Generally speaking , small meeting rooms, bars, cafes, residents' families, etc. belong to this type of area.

When planning the coverage of residential households , the placement of APs should be reasonably selected to take into account the wireless signal coverage of each room.

Generally speaking , one AP can meet the requirements of wireless signal coverage and the number of users in such areas . The key is to choose the appropriate AP installation location and installation method.

Correct Answers: A,B,C,D

24. True or false (1 point )

Wireless bridges working on different channels can also implement WDS functions. ( )

Correct answer: wrong

25. Multiple choice questions (1 point )

If the FIT AP fails to register successfully during the Layer 2 registration process , you can get the following information through debug |wapp on the wireless controller side : *Oct 17 14:38:05:117 2008 5002 LWPS/7/Event:Discovery request message received fromAPwith WA2220E-AG Model and Serial-ID 210235A22WC07C000300 *Oct 17 14:38:05:127 2008 5002 LWPS/7/Error:AP not found for Serial-ID 210235A22WC07C000300 *Oct 17 14:38: 05:137 2008 5002 LWPS/7 /Error: Discovery request is dropped due to Processing failed , the reason why FIT AP cannot register successfully is ()

The version information of AC is wrong

AP version information is wrong

The serial number configured on the AP is wrong

The serial number configured on the AC is wrong

Correct answer: D

26. Multiple choice questions (1 point )

Which of the following operations can reduce signal interference ? ()

Using 11a and 11g mixed deployment method

Network optimization with non-overlapping channels

Troubleshoot and eliminate sources of interference in the field environment , such as microwave ovens, Bluetooth, and cordless phones

Adjust the transmit power of some APs

Correct Answers: A,B,C,D ( No points for fewer choices )

27. Multiple choice questions (1 point )

The following is a common hardware tool for wireless network survey is () .

Enterprise-class wireless network card

digital camera

Terminal equipment used by customers in actual business , such as PDA , WiFi phone, etc.

WireShark

Various booster antennas, tapes, strapping, etc.

Correct Answers: A,B,C,D,F

28. Multiple choice questions (1 point )

The protocol used for management and control between the wireless controller and the FIT AP is () .

WATER

IACTP

TAPA

CAPWAP

Correct answer: D

29. Subjective questions (9 points )

During the AC+FIT AP three-layer registration process , if the AP cannot be assigned an IP address , analyze and write three possible configuration problems.

1. Check whether there is any problem with the network cable from the AP .

2. Check whether the basic network from AC to AP is reachable, such as VLAN transparent transmission for Layer 2 registration , route publishing or pointing for Layer 3 registration.

3. Check whether the IP addresses in the DHCP address pool are sufficient.

4. Check whether the DHCP IP segment and VLAN IP are in the same subnet.

5. Check whether the authorization of the AC is sufficient.

30. Multiple choice questions (1 point )

For the coverage planning of the area with large radius and few concurrent users , the correct statement is ( ) .

Such areas are the main WLAN indoor application places , such as comprehensive functional areas, hotel rooms, etc. Such areas can be divided into smaller areas according to rooms, walls, columns, etc. , and can be regarded as a combination of multiple areas with small radii and few users.

This type of area can be covered by an indoor distributed system , and the antenna feeder system of the original wireless network ( such as PHS , CDMA , etc. ) is used for WLAN system combination , so as to achieve the effect of one AP covering a large area.

Such areas can be covered separately by using low-power APs . The coverage method can be carried out according to the coverage method of the area with small radius and few users . When covering, it is necessary to pay attention to the isolation of each AP frequency point.

When deploying multiple APs in such an area , it is necessary to consider the division of channels between APs , and use cross-channel deployment between APs to reduce interference . For example, when 3 APs need to be deployed , the channels of AP1 , AP2 , and AP3 can be set to 1 and 6 respectively , 11 .

Correct Answers: A,B,C,D

31. Multiple choice questions (1 point )

Regarding the description of the data forwarding principle between the H3C wireless controller and the AP , which of the following is correct ? ()

Any data packets of the wireless client STA will be delivered by the AP to the wireless switch through the IPinIP tunnel , and will be uniformly forwarded by the wireless switch

Establish IPinIP tunnels between the wireless switch and the AP , and the wireless switch regards these tunnels as virtual ports

After the wireless switch receives the user's data from the IPinIP tunnel, it first decapsulates the tunnel , and then performs data exchange . If the outbound interface is a tunnel , it adds tunnel encapsulation to the data packet again until it reaches the farthest end.

The IPinIP tunnel established between the wireless switch and the AP uses a TCP connection

Correct Answers: A,B,C

32. Multiple choice questions (1 point )

Regarding the precautions in the process of wireless network survey and design , the following statement is correct ( ) .

When measuring the penetration loss of AP signals by obstacles such as walls , the incident angle of AP signals needs to be considered .

In WLAN engineering , it is necessary to know the materials of buildings and surrounding materials through on-site survey , and estimate their impact on wireless signals , so as to determine the installation location of WLAN equipment.

When configuring the frequency point of the outdoor AP coverage area , in order to achieve effective coverage of the AP and avoid mutual interference between channels , the cellular coverage principle of the mobile communication system should be followed when channel allocation.

When configuring AP frequency points , the frequency detection should be carried out on-site in the target area first , and the channels used by existing APs in the coverage area should be avoided as much as possible.

Correct Answers: A,B,C,D

33. Multiple choice questions (1 point )

The following technologies that are not specific to the 802.11ax protocol are () .

802.11ax supports uplink and downlink bidirectional MU-MIMO

802.11ax introduces BSS-COLOR to quickly identify BSS, improving signal reception and demodulation efficiency.

Support 8-channel bonding with 160MHz bandwidth

802.11ax modulation mode supports 1024QAM

Correct answer: C

34. Multiple choice questions (1 point )

The wireless controller has the following configuration

wlan service-template 2 crypto

ssid h3c-wlan

authentication-method open-system

cipher-suite wep40 wep default-key 1 wep40 pass-phrase 12345

The possible reason why the client cannot search for wireless signals is () .

No bind WLAN-ESS X

no service-template enable

no dot1x enable

no radio enable

Correct Answers: A,B,D ( No points for fewer choices )

35. True or false (1 point )

In order to increase the versatility , the FIT AP version of wireless products will no longer be released separately , but will be included in the package file of the corresponding wireless controller version. ( )

Correct answer: correct

36. Multiple choice questions (1 point )

In point-to-point wireless bridge transmission , the most suitable antenna type is () .

An omnidirectional antenna at one end and a directional antenna at one end

omnidirectional antenna

Directional antenna at both ends

Correct answer: C

37. Multiple choice questions (1 point )

Which of the following statements about indoor AP installation specifications is correct is () .

The wells, floors, walls, etc. of the installation location must not seep water , have little dust, and be well ventilated ; the installation location must be free from strong electricity, strong magnetism, and strong corrosive equipment ; the temperature and humidity of the installation location must not exceed the range of the host’s operating temperature and humidity ; The installation location should have good lighting conditions to facilitate equipment maintenance and repair.

When the AP is installed in a weak current well , safety measures such as dustproof, waterproof and anti-theft should be taken , and the ventilation should be well ventilated and the working environment should be kept clean ; when the AP is wall-mounted on the wall of a building , anti -theft measures must be taken ; When it is on the ceiling , it must be fixed with a fixed frame . It is not allowed to hang in the air or throw it directly on the ceiling . The installation location should be close to the inspection port.

The installation location of the AP must meet the requirements of the engineering design . If the installation location of the AP needs to be changed , the consent of the design unit and the construction unit must be obtained , and the design change procedures must be handled.

The AP must be firmly fixed during installation , and it is not allowed to hang in the air ; the installation location of the AP must have enough space to facilitate equipment heat dissipation, commissioning, and maintenance.

Correct Answers: A,B,C,D

38. Multiple choice questions (1 point )

The maximum transmission power of indoor WLAN equipment generally shall not exceed ( ) .

500mW

100mW

50mW

1000mW

Correct answer: B

39. True or false (1 point )

One-to-one or one-to-many wireless connections between FAT APs can be realized by using the wireless bridging function , but when realizing one-to-many wireless connections , in order to ensure the effective bandwidth of each link , the number of connected APs should not be too large. ( )

Correct answer: correct

40. Multiple choice questions (1 point )

If the "display wlan ap all" command on the AC shows that the AP repeatedly enters the Imagedownload state , the possible reasons are () .

The serial number or model information of the Fit AP template is incorrectly configured on the AC .

There is not enough space on the Fit AP to store the downloaded new software version

There is no software version of the Fit AP on the AC

The software version of the Fit AP on the AC does not match the software version of the AC

Correct Answers: B,C,D

41. Subjective questions (9 points )

Describe the registration process when an AP connects to an AC through a layer-3 network using option43 . Silently write out the list of commands required for this experimental configuration.

Registration process when the AP is connected through a layer-3 network-option43 method

2. The registration process when the AP is connected through the three-layer network -DNS method

3. The registration process when the AP is directly connected or connected through a layer 2 network

42. Multiple choice questions (1 point )

Through the command "display wlan client mac-address xxxx-xxxx-xxxx", you can view the detailed running status of the client , which parameters reflect the signal strength and quality received by the client ? ()

Wireless mode

RSSI

Roam Status

SNR

Correct answer: B, D ( no points for fewer choices )

43. Multiple choice questions (1 point )

In the wireless controller mode of WX3000 series or WX6103 , you can switch to switch board mode by command () .

oap connect slot 0

[H3C]oap connect slot 0

oap connect slot 1

[H3C]oap connect slot 1

Correct answer: A

44. Multiple choice questions (1 point )

Which of the following information does the factory configuration of WA2200 series FATAP contain ? ()

By default, telnet is supported ( account admin, password h3capadmin)

By default, the wireless client layer 2 isolation function is disabled

The default SSID name is WA2200

The default IP address is 192.168.0.50

Correct answer: A,D

45. Multiple choice questions (1 point )

In the switch board mode of WX3000 series or WX6103 , enter () to return to the wireless controller mode of the device.

Ctrl+c

Ctrl+p

Ctrl+b

Ctrl+k

Correct answer: D

46. Multiple choice questions (1 point )

In the planning of wireless networks , it is generally recommended to increase the equipment margin of ( ) based on the number of APs counted by on-site surveys .

20% or more

10%-20%

5%-10%

5% or less

Correct answer: C

47. Multiple choice questions (1 point )

In the following description about H3C FIT AP registration , the correct statement is () .

After the FIT AP successfully registers on the AC , the displayed status is Run; if the registration is unsuccessful , the displayed status is Idle .

During the registration process, FITAP displays ImageLoad, indicating that FITAP is downloading software from AC .

There should be FITAP software matching its version in the flash of AC , and the naming is correct.

During the FITAP registration process , you must ensure that the AP model added to the AC is consistent with the actual device.

Correct Answers: A,B,C,D

48. Multiple choice questions (1 point )

When the wireless client cannot detect the signal , the possible reason is ( ) .

Possibly a weak signal problem , weak signal may lead to lack of coverage

It may be a client problem , and the wrong setting of the client may cause the signal not to be searched

It may be a configuration problem . A wrong configuration may cause the AP to not transmit signals.

Correct Answers: A,B,C

49. Multiple choice questions (1 point )

Which of the following statements about indoor AP installation specifications is correct is () .

The installation location of the AP must meet the engineering design requirements . If the installation location of the AP needs to be changed , the consent of the design unit and the construction unit must be obtained , and the change procedures must be handled.

Correct Answers: A,B,C,D

50. Multiple choice questions (1 point )

In the configuration of the wireless controller , if the command wlan service-template 1 crypto is included , it means that the wireless service is possible () .

Enable WEP encryption

Enable WPA authenticated encryption

Enable PSK authenticated encryption

No authentication and no encryption

Correct Answers: A,B,C

51. Multiple choice questions (1 point )

The outdoor wireless bridge survey mainly includes ( ) .

Network cable, feeder length

Distance between two points, equipment model and quantity

Engineering accessories ( poles and kits, ground wires, power wires, casings, etc. )

installation method

Correct Answers: A,B,C,D

52. Multiple choice questions (1 point )

After the thin AP is powered on, in what ways can the AC 's IP address be obtained ( )

DNS

DHCP

static configuration

broadcast

Correct Answers: A,B,C,D

53. Multiple choice questions (1 point )

The IRF stack networking modes supported by the wireless controller include () .

Two-machine direct connection to IRF

Switching IRF between two machines

Service board cross-chassis IRF

Service boards in the same frame IRF

Correct Answers: A,B,C,D

54. True or false (1 point )

For high-density wireless user access areas , it is necessary to consider deploying multiple APs in the same area . ( )

Correct answer: correct

55. Multiple choice questions (1 point )

The correct description of the CAPWAP protocol is () .

Centralized configuration delivery, user access management, and roaming management of the AC to the Fit AP .

CAPWAP adopts UDP client / server model communication between Fit AP and AC .

CAPWAP defines the data encapsulation and transmission mechanism between AC and Fit AP .

H3C 's AC monitor port number : 5247 ( data tunnel ) , 5246 ( control tunnel ) .

Correct Answers: A,B,C,D

56. Multiple choice questions (1 point )

The wrong description for the wireless controller supporting IRF stacking is () .

Multiple devices at the same level use IRF technology to form a virtual device . For the upper and lower devices , they are like one device.

The core idea of wireless IRF is to connect multiple AC devices together in a star topology , and after necessary configuration , virtualize them into a distributed

Wireless IRF realizes collaborative work, unified management and uninterrupted maintenance of multiple devices.

All wireless controllers support IRF function

Correct answer: D

57. Multiple choice questions (1 point )

For coverage planning with small radius and multiple concurrent users , the correct statement is ( ) .

When deploying multiple APs , the distance between the installation locations of each AP needs to be considered.

Generally speaking , open office areas, large lecture halls, and large conference centers belong to such areas.

The interior of this type of area is relatively open and there are no walls to block it , but due to the number of access users , it is required to use multiple APs for coverage.

Correct Answers: A,B,C,D

58. Multiple choice questions (1 point )

What are the common deployment methods of wireless controllers and APs when using FIT AP networking ? ()

Direct connection between FIT AP and wireless controller , used for small FIT AP network

Networking across the L2 layer network between the FIT AP and the wireless controller

Between the FIT AP and the wireless controller across the L3 layer network networking

Networking across the WAN between the FIT AP and the wireless controller

Correct Answers: A,B,C,D

59. Multiple choice questions (1 point )

When switching from FAT to FIT mode on H3C AP , it can be realized by command () .

[H3C]ap-mode fit

[H3C]ap-model fit

<H3C>ap-mode fit

<H3C>ap-model fit

Correct answer: C

60. Multiple choice questions (1 point )

Which of the following statements about outdoor AP installation specifications is correct is () .

The installation of outdoor equipment must be protected against lightning and waterproof. Outdoor construction requires additional lightning protection devices , such as lightning rods, ground piles, ground nets, grounding bars, etc. The surface of the AP should be perpendicular to the horizontal plane , and the unconnected outlet holes should be sealed with waterproof plugs , and strict waterproof sealing measures should be taken at each joint. D. If the AP is placed in a waterproof box , the box must be fixed firmly and kept vertical. The cabinet should be kept ventilated to facilitate the heat dissipation of the equipment. The box body can be installed on the inner facade of the roof wall to play the role of shading and rain protection. All cables entering the waterproof box need to be waterproofed , or routed downward. The waterproof box can also be fixed on the pole used for installing the antenna with a hoop.

The outdoor construction site should be easy to fix devices without obstruction ; the building walls involved in outdoor hardware installation are solid and complete.

The installation position of the AP must meet the engineering design requirements. If the installation location of the AP needs to be changed , the consent of the design unit and the construction unit must be obtained , and the design change procedures must be handled.

Correct Answers: A,B,C

61. Multiple choice questions (1 point )

Which of the following statements about outdoor AP installation specifications is correct is () .

If the AP is placed in a waterproof box , the box must be fixed firmly and kept vertical ; the box must be kept ventilated to facilitate the heat dissipation of the equipment ; the box can be installed on the inner facade of the roof wall to play the role of shading and rain ; All the cables entering the waterproof box need to be made waterproof bends , or use the downward routing method ; the waterproof box can also be fixed on the pole used to install the antenna with a hoop.

The outdoor construction site should be easy to fix devices without obstruction ; the building walls involved in outdoor hardware installation are solid and complete.

The installation of outdoor equipment must be protected against lightning and waterproof ; outdoor construction must have additional lightning protection devices , such as lightning rods, ground piles, grounding bars , etc .; Strict waterproof sealing measures shall be taken at each joint.

Correct Answers: A,B,C,D

62. Multiple choice questions (1 point )

After defining service-template 1 as a non-encrypted service-template through the command "wlan service-template 1 clear" in the H3C wireless controller , how can it be modified to an encrypted wireless service template ?()

If wlan service-template 1 has been applied to the radio of the AP , you need to cancel the application first and then enter the command " wlan service-template 1 crypto" ; if wlan service-template 1 is not applied , directly enter the command "wlan service-template 1 "crypto" is enough.

The encryption type of the existing wlan service-template 1 cannot be modified , the original service-template 1 can only be deleted , and then a new service-template 1 can be modified to encrypted by the command "wlan service-template 1 crypto" type of purpose. But if wlan service-template 1 has been applied on the radio of the AP , the related application needs to be released first.

Enter the command "wlan service-template 1 crypto" .

First enter "service-template disable" in the service-template 1 view, then enter "wlan service-template 1 crypto" in the global view, and finally enter "service-template enable" in the service-template 1 view .

Correct answer: B

63. Multiple choice questions (1 point )

The following statement about the H3C wireless switch + FIT AP system is wrong () .

The wireless switch is a layer-3 device , and can only configure a VLAN interface IP address and system IP address ( usually the two are the same ), and can only configure static routing

H3C 's universal wireless solution can be deployed on any existing Layer 2 or Layer 3 LAN topology without reconfiguring the backbone or hardware. Wireless switches and managed access points can be located anywhere in the network

AP has zero configuration , the console port is useless , the hardware is mainly composed of CPU+ memory +RF , configuration and software must be downloaded from the wireless switch

Correct answer: A

Wireless Network and Internet of Things Test Question 1

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