Real HCIP-WLAN-CEWA V1.0 Certification Exam H12-321_V1.0-ENU Dumps Questions

1. When the air interface frame is a management frame, how many bits are the ESS and IBSS in the Capability Info field of the management frame that can determine the device is a wireless bridge?

2. According to the detection results reported by the AP, the AC can obtain the neighbor relationship between the AP and the surrounding devices, as well as the neighbor relationship of all radio frequency devices under the entire AC including legal APs, illegal APs, and non-Wi-Fi interfering devices, as shown in the following figure:

In order to prevent the reported data from being too large, only the legal neighbors with signal strength greater than -85dBm and illegal neighbors with signal strength greater than () dBm are reported here.

3. In the N+1 backup network as shown in the figure, AC3 is the backup AC of AC1 and AC2, the number of APs that are online on the main AC1 is 1024, the number of configured APs is 2048, and the number of APs that are online on the main AC2 is 512. Normally, what is the minimum number of APs allowed to access on AC3, and what is the minimum number of APs allowed to be configured on AC3?

4. As shown in the figure, in the Mesh network, which STP spanning tree protocol needs to be enabled?

5. As shown in the figure, a point-to-point link with a length of 3km, and an office building with a height of 9.1m from the ground at the midpoint of the link, if the signal transmission frequency is 5.8GHz, please refer to the following formula according to the actual situation, what is the minimum installation height of the transmit and receive antenna from the ground?

6. Which one of the following four scenarios does not belong to the Mesh network?

7. As shown in the figure, in a large enterprise WLAN network, the company's network administrator recently discovered that the WLAN network traffic was abnormal, and the ping gateway was delayed or a large amount of packets was lost. After excluding other possibilities, it was suspected of being an illegal network attack. Which of the following illegal attacks is most likely?

8. As shown in the figure, a point-to-point communication link with a length of 10km, a tree with an obstacle height of 12.2m in the link, and a distance between the tree and one of the antennas is 4km, calculate the radius of Fresnel zone at 4km, if the signal transmission frequency is 5.8GHz, refer to the following formula according to the actual situation, what is the minimum installation height of the transmit and receive antenna from the ground?

9. In the network shown in the figure below, the data traffic before roaming is forwarded as STA-HAP-HAC-upper network. After layer 2 roaming, what is the direction of data forwarding traffic?

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

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

12. As shown in the figure, what is the load sharing method of the dual-system hot backup solution?

13. As shown in the figure, in the dual-link cold standby load sharing network, AP1 is a newly online AP, and both the two ACs have access configurations, which AC will AP1 choose for access?

14. As shown in the figure, in public places, such as different companies on adjacent floors in an office building, there are multiple SSIDs. After a company turns on the WIDS illegal device counter function, it will counter the AP of other companies. Which of the following function can effectively solve this problem?

15. As shown in the figure, in order to avoid the transparent transmission of STP packets and cause loops to affect each other, which of the following does not need to enable the STP spanning tree protocol?

16. 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?

17. 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?

18. In the network shown in the figure, how is the route selected from A to D in the pro-active mode?

19. In the network shown in the figure below, the data traffic before roaming is forwarded as STA-HAP-HC-upper network, and the forwarding method is tunnel forwarding. After three-layer roaming, what is the direction of data forwarding traffic?

20. In the network as shown in the figure below, the data traffic is forwarded as STA-HAP-HAC-upper network before roaming, and the forwarding method is direct forwarding, and the home agent is configured on the AC. After three-layer roaming, what is the direction of data forwarding traffic?

21. As shown in the figure, in a dual-link load balancing hot backup network, AP1 is a newly online AP, and both ACs have access configurations, which AC will AP1 choose for access?

22. In a WLAN network, the AP group is named ap-group and the WIDS template is wids. Now you need to enable the WIDS device counter function to counter APs with counterfeit SSID=huawei. As shown in the figure, which of the following configuration is correct?

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

24. As shown in the figure, regarding the active/standby mode of the dual-system hot backup solution, which of the following statements is wrong?

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.

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

27. Regarding the relationship between the two technologies of 802.1x and RADIU S, which of the following descriptions is correct?

28. In the WLAN outdoor long-distance point-to-point communication, if a stable communication link is to be maintained, what percentage of the first Fresnel area generally cannot be blocked?

29. 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?

30. In smart roaming, which of the following methods to identify sticky terminals is correct?

31. APs in monitoring mode in the WLAN network can not only monitor peripheral devices but also forward WLAN data.

32. In the Mesh network, if the MP is connected to the wired network, it is necessary to ensure that the MP and MPP cannot communicate with each other through the wired network. Otherwise, the MPP and MP can communicate with each other through the Mesh link and the wired link. Mesh and wired The link will form a loop between MPP and MP.

33. When the air interface frame is a data frame, the DS value needs to be compared. When the values of To DS and From DS are respectively, the device type is AP?

34. There are three implementations of CAC. Which of the following statements about the implementation of CAC based on channel utilization is wrong?

35. Which of the following descriptions about Mesh routing establishment in pro-active mode is correct?

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

37. The antenna is different from the signal amplifier. It is a passive device that does not require power supply, but only guides and shapes the wireless signal.

38. Regarding enabling the HSB backup group, if the AP is already online on the main AC, and then the AP information is added offline on the standby AC, the AP status on the standby AC will display fault. In this case, you need to execute the undo hsb enable command in the HSB backup group view of the standby AC to enable the HSB active/standby backup function, and then execute the hsb enable command to enable the HSB active/standby backup function, and then back up the information on the active AC again. The backup information of the active and standby is consistent, and the AP status on the standby AC will be displayed as standby at this time.

39. In a large-scale WLAN network, in order to improve the reliability of the C APWAP link between AP and AC, the DSCP priority of CAPWAP management messages can be configured as high priority.

40. Which of the following commands can be used to check whether the AP channel and transmit power are enabled with the automatic selection function?

41. In the WLAN network environment using the Agile Controller, regarding the 802.1x authentication failure, which of the following phenomena does not meet?

42. In smart roaming, sticky terminals that do not support 802.11k need to scan to obtain information of the surrounding APs to determine whether there are better neighbor APs.

43. 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.

44. 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?

45. 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?

46. Which of the following commands can be used to create an RF tuning template?

47. Configure the country code

48. Three-layer roaming means that when the user roams from the original AP to the new AP, the service VLAN corresponding to the VAP changes, and the user's data message is switched to the VLAN of the new AP after roaming.

49. In smart roaming, terminals that support 802.11k can actively collect neighbor AP information and report it to the associated AP.

50. 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?

51. In WLAN smart roaming, what is the mechanism time for blind user protection?

52. Filter out APs that meet the threshold difference condition

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

54. The typical networking of Huawei outdoor AP6510DN, AP6610DN, AP8030DN, AP8130DN all support access point mode and bridge mode.

55. Which of the following does not belong to the purpose of WLAN equipment upgrade?

56. In large WLAN networks, customers usually deploy directory servers. What is the main function of the directory server?

57. AC6005 enables the flood attack detection function. By default, what is the flood attack detection cycle and the maximum number of similar packets?

58. 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?

59. Which of the following behaviors is a threat to WLAN network security?

60. The following is the URL template configuration when configuring the AC6005 to connect to the Portal server. Which of the following statement is error?

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

62. Which of the following descriptions of Mesh wired port parameters are correct?

63. 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.

64. Regarding the precautions for configuring the dual-system hot backup function, which of the following statements is wrong?

65. 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?

66. Regarding the maintenance of the link status of the active and standby channels, to prevent the TCP from being interrupted for a long time but the protocol stack does not detect the connection interruption, which can be prevented by sending the active and standby service messages and retransmission mechanisms.

67. Which of the following descriptions of the Fresnel zone is correct?

68. 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.

69. Assign VLAN to the terminal according to the VLAN algorithm

70. In the same frequency Mesh network, the transmission bandwidth of two APs is about 200M. What is the average transmission bandwidth when adding one AP?

71. The Agile Controller synchronization methods include manual synchronization and automatic synchronization. Which of the following statements about synchronization methods are correct?

72. When installing a long-distance point-to-point radio frequency communication link, if the distance between the transmitting and receiving antennas exceeds how many kilometers, the influence of the curvature of the earth needs to be considered?

73. In a WLAN network, when the AP is in monitoring mode, what kind of message does the AP use to determine the device type?

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

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

76. 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.

77. The following is the configuration when configuring the AC6005 to connect to the Portal server. What port does port 50200 refer to?

Web-auth-server huawei

Server-ip 10.254.1.100

Port 50200

Shared-key ciper huawei url-template huawei

78. Which of the following statement about neighbor active detection is wrong?

79. When the WLAN network supports inter-AC roaming, multiple ACs will establish a full connection through the inter-AC tunnel. To ensure that users roaming to other ACs at Layer 3 can still receive broadcast messages in the original subnet, and simply broadcast the broadcast messages to other ACs through the roaming tunnel, a broadcast loop may be formed.

80. Which of the following commands is not necessary to configure the Mesh whitelist?

81. What does the OU in the directory server stand for?

82. Regarding the default configuration of common parameters of dual-link cold backup, which of the following statements is correct?

83. The "5W" in "5W1H" in the Agile Controller function introduction refers to:

Who has access to the network?

Where to access the network from?

When is the access time?

Why connect?

What equipment is connected?

84. In the Agile Controller admission control scenario, the description of the role of the RADIUS server/client, which is correct?