HCIP-WLAN-CEWA V1.0 H12-321_V1.0-ENU Study Questions

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You can get the latest HCIP-WLAN-CEWA V1.0 H12-321_V1.0-ENU Study Questions for your HCIP-WLAN Certification. It covers the following topics: Building a Foundation Enterprise,Building a Security Enterprise WLAN ,Building a Movable Enterprise WLAN,Building a Reliable Enterprise WLAN and Building an Internet Enterprise WLAN. If you prepare well by Freetestshare HCIP-WLAN-CEWA V1.0 H12-321_V1.0-ENU Study Questions, you will pass your Huawei H12-321_V1.0-ENU exam successfully.

Try free H12-321_V1.0-ENU practice exam.

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1. In the N+1 backup network as shown in the figure, a total of 300 APs from AP1 to AP300 are online in AC1, and a total of 400 APs from AP301 to AP700 are online in AC2. AC3 can be used as a backup AC to configure 700 APs, but at most 500 APs can go online at the same time. Without changing the configuration, which of the following statement is wrong? (Multiple choice)

If AC1 fails, 300 APs from AP1 to AP300 will perform active/standby switchover and go online in AC3

If AC2 fails, 400 APs from AP301 to AP700 will perform active/standby switchover and go online in AC3

If AC1 and AC2 fail at the same time, only 500 APs from AP1 to AP500 can perform active/standby switchover and go online in AC3, and the remaining 200 APs cannot go online in AC3, and the services of these APs will be interrupted.

After the failure of AC1 or AC2 is restored, it is uncertain whether the active and standby APs will go online again in AC1 and AC2.

2. The following description of the directional antenna, which is wrong?

The directional antenna is a certain angular range of radiation on the horizontal pattern, which is what is usually called a directional antenna

The directional antenna has the strongest energy gathering ability, and the signal directionality is excellent

When the number of remote link points is small, or the angle and azimuth are quite concentrated, using directional antennas is the most effective solution

Only the main lobe of the directional antenna has practical uses, so the side lobe can be ignored

3. Which of the following is correct about the Earth curvature formula?

4. When the user uses the WPA2-802.1x security policy and the STA supports fast roaming technology, the user does not need to re-complete the 802.1x authentication process during the roaming process, but only needs to complete the key negotiation process.

True

False

5. In a large-scale WLAN Layer 3 network, which of the following descriptions are wrong about the DHCP server? (Multiple choice)

In a large-scale WLAN network, the AP can obtain the AC's IP address from the DHCP server through the option 60 parameter

In a large-scale WLAN network, the AP can obtain the AC's IP address from the DHCP server through the option 43 parameter

In a large-scale WLAN network, it is recommended to deploy an independent DHCP server

In a large-scale WLAN network, it is generally recommended to use AC as a DHCP server

6. Which of the following descriptions of Mesh security templates are correct? (Multiple choice)

The security template used by APs in the same Mesh network should be the same

The security template bound to the Mesh template must be configured as WPA2+PSK+AES

The security template bound to the Mesh template must be configured as WPA2+PSK+TKIP

The security template bound to the Mesh template must be configured as WAPI+PSK+CCMP

7. The following figure shows the mesh configuration process. What should be filled in for 5, 7, and 10 respectively?

Quote Mesh template, configure Mesh whitelist, configure Mesh template

Configure Mesh whitelist, configure Mesh template, quote Mesh template

Configure Mesh template, quote Mesh template, configure Mesh whitelist

Configure Mesh whitelist, quote Mesh template, configure Mesh template

8. Which of the following descriptions about Huawei's spectrum navigation features is correct? (Multiple choice)

In Huawei's spectrum navigation features, whether 2.4G priority access or 5G priority access is considered

First determine whether the number of AP access users exceeds the starting threshold of dual-frequency load balancing. If not, the STA can access the 5G radio first.

If the starting threshold of load balancing between dual frequencies is exceeded, the AP will calculate according to the formula (number of users connected by 5G radio frequency-number of users connected by 2.4G radio frequency)/number of users connected by 5G radio frequency * 100% Compare the load difference between the two radios with the difference threshold of load balancing between the two frequencies to determine which frequency band the STA is allowed to access

When the number of AP access users reaches the starting threshold of load balancing between dual frequencies, if (number of users connected by 5G radio frequency-number of users connected by 2.4G radio frequency/number of users connected by 5G radio frequency * 100% > gap-threshold, the user is given priority to go online on 5G radio

9. In a WLAN network that uses the Agile Controller as the access control server, which of the following statements is correct regarding the authentication rules? (Multiple choice)

The authentication conditions must be set one by one in the authentication rules, including department, access device, SSID, etc.

When configuring authentication rules, you can specify the account source, authentication protocol, and account binding information

If a user can match multiple authentication rules, the rule with higher priority will be matched first

The matching entries in the authentication rules do not need to be configured in advance

10. The Agile Controller must divide the equipment into subgroups to facilitate rule delivery.

TRUE

FALSE

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11. 4G frequency band; otherwise, the terminal is considered to be a dual-band terminal. This logic also applies to 5G radio.

TRUE

FALSE

12. Which of the following belong to the category of directional antennas? (Multiple choice)

Non-plate cross-polarized antenna

Plate type directional antenna

Panel type omnidirectional antenna

Plate type cross-polarized antenna

13. Regarding the MAP in the Mesh network, what is wrong in the following description?

MAP is a special form of MP

MAP is a special form of MPP

MAP is usually used to connect to the terminal

Any Mesh Point that supports AP function can provide access function for STA

14. In dual-system hot backup, which of the following statements about HSB backup channels is wrong?

The HSB backup channel between the main and standby ACs is recommended to be connected separately to ensure its high reliability

The HSB backup combination backup service is independent of each other, and the HSB backup group can work normally without binding.

Under VRRP hot standby, the active/standby status of the HSB backup channel follows the changes in the active/standby status of VRRP

Under dual-link hot backup, HSB channels have no active/standby status, only data backup channels

15. A large enterprise deploys a WLAN network, and some of the SSIDs use the direct forwarding method. Which of the following descriptions about the characteristics of the direct forwarding method is correct? (Multiple choice)

Business data does not need to be moved back to the AC, and there is no forwarding bottleneck

Convenient for centralized policy control of wireless traffic, and has obvious advantages in user policy control, wireless roaming, etc.

Better security when data packets are forwarded

AC expansion is simple, just increase the number of independent ACs

16. Which of the following antenna patterns belong to the omnidirectional antenna pattern? (Multiple choice)

17. In the WLAN network environment, after being attacked by Spoof spoofing, the attacking terminal cannot be determined by the MAC address.

TRUE

FALSE

18. Configure the Option 43 field on the Windows 2003 DHCP Server. For example, the string 030C3139322E3136382E32322E31 represents 192.168.22.1. The fixed value of 03, 0C changed to decimal is 12, which means the string length of the IP address, the address 192.168.22.1 has a total of 12 characters, 31 means the ASCII value corresponds to 1, 9 corresponds to 9, and so on, 2E means dot.

So what should be the string corresponding to the IP address 32.15.2.14?

030733322E31352E322E3134

030A33322E31352E322E3134

030A3033322E3031352E3030322E303134

030A32332E35312E322E3431

19. In the Wi-Fi network with WIDS enabled, which of the following statements about device information reporting is wrong? (Multiple choice)

Equipment information reporting, short-period reporting is also called immediate reporting period

The long period of equipment information reporting can be set, the minimum is 1 hour

Short-cycle reporting is full reporting

The default time for long-term reporting is 5 hours

20. In the channel switching service non-interruption feature, the mechanism for notifying the terminal to switch channels is defined by the 802.11h protocol.

TRUE

FALSE

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21. In the WLAN network, the AP group is named ap-group1, and the WIDS template is named widsl. Now you need to enable the WIDS device detection function globally. Which of the following configurations is correct?

[AC-wlan-view] ap-group name ap-group1 [AC-wlan-ap-group-ap-group1] radio 0 [AC-wlan-group-radio-ap-group1/0] work-mode monitor [AC-wlan-group-radio-ap-group1/0] wids device detect enable

[AC-wlan-view] ap-id 0 [AC-wlan-ap-0] radio 0 [AC-wlan-radio-0/0] work-mode monitor [AC-wlan-radio-0/0] wids device detect enable

[AC-wlan-view] wids-profile name wids1 [AC-wlan-wids-prof-wids1] device detect enable

[AC-wlan-view] wids-profile name wids1 [AC-wlan-wids-prof-wids1] wids device detect enable

22. Regarding the trigger mechanism of 802.1x authentication, which of the following descriptions are correct? (Multiple choice)

802.1x authentication trigger can only be initiated by the client

802.1x authentication cannot be initiated by authentication devices (such as 802.1x switches)

802.1x client can trigger authentication in multicast or broadcast mode

The authentication device can trigger authentication in multicast or unicast mode

23. Channel switching service non-interruption feature realizes without terminal support

TRUE

FALSE

24. If the time is set in the authorization element of the Agile Controller, what is the purpose of configuring the time during authentication and authorization rules?

Specify the total duration of user access

Specify the time point of user access

Specify the deadline for users to be offline

Specify the time range for user access

25. If a small conference room with a maximum of 90 people is equipped with 3 APs, by configuring CAC on each AP, the number of users cannot exceed 30, and the SSID will be hidden after exceeding, which can indirectly achieve the effect of load balancing among APs.

True

False

26. A company has deployed a WLAN network, and WLAN services have been carried on the AP. The company now needs to upgrade the AP version. In order to minimize the impact on users, which of the following upgrade methods is recommended?

Automatically upgrade AP

Upgrade AP online

Upgrade AP through AP's web network management

Upgrade AP through AP Boot

27. In the WLAN network, the Weak IV attack detection function does not require the support of the dynamic blacklist function.

True

False

28. When a large enterprise deploys a WLAN Layer 3 network, it needs to configure the Option 43 field on the Windows 2003 DHCP Server to notify the AP of the AC's IP address.

The AC's IP address is 10.23.100.1. Which of the following needs to be configured in the Option 43 field on the JDHCP Server?

030831302E32332E3130302E31

040831302E32332E3130302E31

030B31302E32332E3130302E31

030B31302E32332E31302E3031

29. Regarding the precautions for configuring HSB main and backup services, which of the following statements is wrong?

If you want to modify, you need to delete the HSB active and standby services first, and then reconfigure

Only after enabling the dual-system hot backup function, the configured HSB active/standby backup channel parameters will take effect

After the configuration is complete, you can modify the HSB main and backup channel parameters

After the configuration is complete, you cannot directly modify the HSB main and backup channel parameters

30. As shown in the figure, it is part of the radio frequency tuning process. Regarding the operation steps of radio frequency tuning(connection diagram)

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31. The AP will periodically send Discovery Request messages to detect the status of the original main link. When the link is restored, the AP detects that the priority of the link is higher than the priority of the main link currently in use and triggers a fallback. In order to avoid frequent switching caused by network shocks, after waiting for 6 Echo cycles, the AC is notified to perform active and standby simultaneous switching, and at the same time, the AP sends the STA's data service to the newly upgraded AC.

True

False

32. Which of the following descriptions about the backhaul VAP is wrong?

Complete MP neighbor discovery

Complete the MESH connection establishment and data return function

Realize the establishment of routing topology between nodes by forwarding routing management messages in the return link

Each radio can create multiple backhaul VAPs

33. An engineer wants to modify the user information on the Agile Controller, but finds that it cannot be modified. What are the possible reasons? (Multiple choice)

The engineer ’ s Agile Controller account has insufficient permissions

User information is synchronized from the AD directory server

Agile Controller created the same user information

Related user information in the AD directory server is deleted

34. Only four channels 1, 5, 9, and 13 can be used in a WLAN network. After channel is adjusted, as shown in the figure, which of the following is correct? (Multiple choice)

35. Look at the picture. (Multiple choice)

20 degrees

30 degrees

40 degrees

60 degrees

36. After the AP establishes a dual link, it will periodically perform Echo detection to the active and standby ACs, and carry the active and standby information of the link in the Echo message. When the AP detects that the main link is interrupted, the AP carries the main information in the Echo Request message sent to the standby AC. After the standby AC receives the Echo Request message, it judges that the link has become the active state and sets itself from the standby state. The AC switches to the main AC, and the AP sends the data services of the STA to the new main AC at the same time.

TRUE

FALSE

37. A large enterprise needs to deploy a WLAN network. There are already Huawei modular switches (S77/97/127) in the existing network. In order to reduce the space resources occupied by equipment in the computer room and facilitate future WLAN network expansion, users can use the Insert the AC board into the slot to deploy the WLAN network. Which of the following AC types can be selected to be inserted into the chassis switch? (Multiple Choice)

ACU2

AC6605

AC6005

X1E board

38. Which of the following commands can be used to create an air scan template?

[AC-wlan-view] rrm-profile name wlan-net

[AC-wlan-view] air-scan-profile name wlan-airscan

[AC-wlan-view] vap-profile name wlan-vap

[AC-wlan-view] ssid-profile name wlan-ssid

39. Which of the following message types are not used in the Mesh neighbor establishment process? (Multiple Choice)

Mesh Peering Open

Mesh Peering Confirm

Hello

Mesh Peering Close

40. Although the Fresnel zone exists in all radio frequency communication scenarios, its impact is mainly considered in which of the following communications?

Outdoor point-to-point scene

Indoor Mesh scene

Indoor cellular coverage

Outdoor cellular coverage

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41. Channel switching service uninterrupted means that when the AP switches channels, it will notify the terminal in advance and agree on the time to switch channels. At that time, the AP and the terminal will switch channels synchronously, so as to achieve uninterrupted services.

TRUE

FALSE

42. To get a better coverage effect, try to make the AP signal ( ) pass through the wall.

43. In dual-link hot backup, the AP will establish a CAPWAP link with the main AC and backup AC at the same time

TRUE

FALSE

44. The following command about creating a static load balancing group, which is correct?

[AC-wlan-view] regulatory-domain-profile name domain1

[AC-wlan-view] air-scan-profile name wlan-airscan

[AC-wlan-view] rrm-profile name profile-name

[AC-wlan-view] sta-load-balance static-group name static-1

45. Among the following options, what are the common sources of WLAN interference? (Multiple choice)

Microwave

Remote control

Cordless phone

Bluetooth transmission equipment

46. During passive neighbor detection, what information does a legitimate AP need to collect and report to the AC? (Multiple choice)

Interference between APs

Interference from illegal APs

Interference from non-Wi-Fi devices

Infrared interference

47. Among the following priority queues, the () queue has the highest default priority.

AC-BE

AC-VI

AC-VO

AC-BK

48. Which is the correct configuration for referencing the wired port template?

[AC-wlan-view] ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp] mesh-profile mesh-net radio 1

[AC-wlan-view] ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp] regulatory-domain-profile domain 1

[AC-wlan-view] ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp] wired-port-profile wired-port gigabithernet 0

[AC-wlan-view] ap-group name mesh-mpp [AC-wlan-ap-group-mesh-mpp] ap-system-profile mesh-sys

49. Which of the following servers is a directory server?

Radius server

AD server

DNS server

Portal server

50. In dual-link cold networking, which of the following statements is correct? (Multiple choice)

AP only establishes CAPWAP tunnel with AC

The AP establishes a CAPWAP tunnel with the active and standby ACs

Periodically exchange CAPWAP messages between the AP and the active and standby ACs to check the link status

The AP only periodically exchanges CAPWAP messages with the main AC to check the link status

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51. Regarding the dual-link hot standby configuration, when configuring the priority of an AC, the larger the priority value, the higher the actual priority of the AC.

True

False

52. Which of the following commands can be used to view the role of Mesh?

display wlan mes route

display ap-system-profile

display mesh-profile

display mesh vap

53. Regarding the processing of the WLAN dual-system hot backup to the server, which of the following statements is correct? (Multiple choice)

VRRP whole machine hot backup scenario, the active and standby ACs can publish VIP/VMAC to the server, and only one device uses VIP to interact with the server

In the load balancing scenario, only one AC will interact with the server

VRRP whole machine hot backup scenario, the active and standby ACs can send VIP/VMAC to the server, and both devices will use VIP to interact with the server

In the load balancing scenario, both the active and standby ACs will interact with the server

54. Which of the following descriptions of the Portal authentication process are correct? (Multiple choice)

When using the Portal authentication protocol, if there is a NAT scenario between the authentication server and the access device, the user authentication will fail due to timeout

After receiving the Portal authentication request (REQ_AUTH), the Portal server will send a RADIUS authentication request (ACCESS-REQUEST) to the RADIUS server

Portal authentication has two triggering methods, one is active authentication, the other is redirect authentication

When using the HTTP/HTTPS authentication protocol, if there is a NAT scenario between the authentication server and the access device, the user authentication will fail due to timeout

55. As shown in the figure is the WIDS attack detection process. After the dynamic blacklist is issued, how will the AP handle different data traffic when it is in the blacklist penalty period?

Forward normal data traffic and discard attack traffic

Discard normal data traffic and report attack traffic

Forward normal data traffic and report attack traffic

Discard normal data traffic and discard attack traffic

56. The illegal device prevention function refers to the configuration of the blacklist function based on illegal devices to restrict AP or Client access.

True

False

57. In the packet-by-packet power adjustment feature, the basis for the AP to select the transmission power for the terminal each time before sending a data packet is mainly the current signal strength of the terminal. If the terminal signal is good, it will be sent at a lower power, otherwise it will be sent at a higher power.

True

False

58. As shown in the figure, which of the following labeling of the Fresnel zone is correct?

59. The lobe width is a very important parameter commonly used in directional antennas. It refers to the width of the angle formed by the antenna's radiation pattern below the peak () dB.

60. Regarding the role of each role in the Portal authentication architecture, which of the following descriptions are correct? (Multiple choice)

The RADIUS server saves information such as usernames and passwords for authentication of access users

The Portal server saves information such as usernames and passwords for authentication of access users

The RADIUS server is used to push the Portal authentication page to the user

Portal server is used to push Portal authentication page to users

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61. If roaming between two APs is realized, which of the following conditions must be met? (Multiple choice)

Same security policy

Same SSID

The same data forwarding mode

Same business VLAN

62. The port number of the control message of the CAPWAP tunnel protocol is ().

1645

1646

5246

5247

63. After the dual-system hot backup is configured, the main and backup channels cannot be established, and the information on the active device cannot be backed up to the backup device normally, which causes the dual-system hot backup function to be abnormal. What is the possible cause of the failure? (Multiple choice)

The priority value configuration of the two ACs is the same

The source IP address and source port number of the local end are inconsistent with the destination IP address and destination port number of the opposite end

The retransmission times and retransmission intervals of the main and standby service packets are inconsistent

The TCP channel for sending messages from the active/standby mechanism is not established

64. According to the process of Mesh connection establishment, which of the following steps are correct?

4->3->2->1

4->2->3->1

2->3->4->1

2->4->3->1

65. When a user is online, it is convenient to find which AC the user is currently online, so as to obtain user data. In order to quickly know which AC a user is currently online, each AC needs to save the online status of all ACs in the roaming group and all users.

True

False

66. In a WLAN network that uses the Agile Controller as the admission controller, which of the following options is not the cause of the 802.1x authentication failure?

The key used by the Agile Controller to access the device is inconsistent with the key configured on the device

The billing cycle is not configured

Port 1813 on the server is occupied

The authorization rule matching is to deny access

67. After enabling user CAC, it is set to limit the number of users based on channel utilization. Assuming that the current channel utilization exceeds the configured threshold, the AP will not only reject the association of new terminals, but also kick existing terminals Line until the channel utilization is below the threshold.

TRUE

FALSE

68. In Portal authentication, what are the parameters that AC6005 must configure? (Multiple choice)

Portal server IP address

Portal page URL template

shared-key

Portal protocol version

The port number used by the device to listen to Portal protocol packets

69. In the load balancing mode, which of the following regarding the statement about the processing method of hot backup by RADIUS/Portal server is correct?

Account and authenty the NAS-IP-Address and accounting session-id filled in the backup packet

The srcip in the Radius packet sent by the AC needs to be the same, and the COA/DM device address configured in the Radius server can be different from one to the other

In the case of DOWN/uplink interruption of the original master node, the COA/DM message received by the node needs to be processed and synchronized to the opposite end, and the master device needs to issue authorization information to the AP

When the original master node, not the whole machine down/uplink is interrupted, the backup node also configures a Loopback interface with the same IP as the master node. This interface is not directly added to the IGP, but imported through import direct

70. Among the following options, () is a prerequisite for enabling Huawei's load balancing function.

APs are of the same type

APs are under the same AC management, and there is overlap in signals between APs

STA can scan to APs that perform load balancing with each other

The output power settings of the AP are consistent

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71. Which of the following benefits can smart roaming bring? (Multiple Choice)

Improve the terminal's own business experience and overall performance of the wireless channel

Improve wireless channel performance

Load balancing

Spectrum navigation

72. An engineer set the synchronization type of the Agile Controller to be synchronized by group, but there is no information on the Controller after synchronization. Checking the AD directory server and discovering that the directory server is normal, the user information and user group information are normal. What is the possible cause of this phenomenon? (Multiple choice)

The synchronization mode of the Agile Controller is configured as automatic synchronization

The Agile Controller synchronization range is incorrectly configured

The data structure mapping configuration of the Agile Controller authentication source is incorrect

Agile Controller does not configure any OU filter conditions

73. In the WLAN network environment with WIDS enabled, the MAC addresses of AP devices detected include:

01-01-22-22-33-33

02-01-01-22-33-33

02-01-01-22-33-34

02-01-22-01-01-22

The configured oui whitelist is 01-01-22; which of the above are illegal APs? (Multiple choice)

01-01-22-22-33-33

02-01-01-22-33-33

02-01-01-22-33-34

02-01-22-01-01-22

74. Which of the following statements about Mesh RF parameters are correct? (Multiple choice)

Mesh-enabled radio frequency is best to use 2.4G frequency band

The "distance" parameter configuration of adjacent Mesh nodes should be the same

Regardless of the distance, it is best to configure the short GI mode to increase the air interface bandwidth of Mesh

The power parameter configuration of adjacent Mesh nodes should be the same to avoid unbalanced two-way transmission bandwidth

75. When the engineer adjusted the directional antenna, it was found that when the antenna was placed far from the other antenna, the signal would drop, and then the signal would increase slightly. What caused this increase in signal?

Signal reflection

Frequency harmonics

Sideband

Sidelobes

76. As shown in the figure, there are 4 online STAs (STA1-STA4) under AP1 radio frequency, and 1 online STA (STA5) under AP2 radio frequency. The load balancing start threshold 5 is exceeded, and the maximum number associated users supported by AP1 and AP2 radio frequencies is 10, and the configured load difference threshold is 10%.

When STA6 initiates a request to AP1 for the first time, which of the following statements is correct?

AP1 is first calculated according to the load balancing algorithm, and STA6 is allowed to access

AP1 is calculated according to the load difference threshold algorithm first, and STA6 is allowed to access

AP1 is first calculated according to the load balancing algorithm, and STA6 is denied access

AP1 is calculated based on the load difference threshold algorithm first, and STA6 is denied access

77. Which of the following modes does Huawei RF tuning support? (Multiple choice)

Automatic mode

Timing mode

Manual mode

Adaptive mode

78. Regarding the definition of WIPS/WIDS, which of the following statements is correct?

WIDS is a wireless intrusion prevention system

WIPS is a wireless intrusion detection system

WIDS is a wireless intrusion countermeasure system

WIPS is a wireless intrusion prevention system

79. Which of the following statements about WDS are correct? (Multiple choice)

Connect two independent LAN segments through a wireless bridge, and provide data transmission between them

WDS uses the 2.4GHz band as the bridge band by default

The scalability is good, and there is no need to lay new wired connections and deploy more APs

Huawei indoor AP does not support WDS function

80. Which of the following measures will help guide wireless terminals to preferentially associate with 5G frequency bands? (Multiple choice)

The transmit power configured on the 5G radio is 3-8dB higher than 2.4G

For the terminal to send a probe request to probe the AP, the AP responds first to the probe on 5G, and then responds to the probe on 2.4G after several responses on 5

If the terminal initiates an association to the 2.4G radio frequency, the AP rejects the association, and the association is allowed only after the number of rejections reaches a certain threshold. For the association on the 5G radio frequency, the AP immediately allows the association

Configure the beacon rate on 5G to be higher than the 2.4G radio, the beacon period to be greater than the 2.4G radio, and the number of probe retransmissions to be less than the 2.4G radio