EMT Practice Test

1. Question Content...

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Question1: Which of the following standards are WiFi Developed by the alliance ()? (Select 2 Answers)

Question2: Which of the following AP Mode does not belong to WDS The internet()?

Question3: Which of the following are the relevant parameters of the Traffic template ().
(Select 2 Answers)

Question4: AP Unavailable IP Common reasons for addresses are (). (Select 3 Answers)

Question5: What was the name of the first radio communication network based on packet technology ()?

Question6: for dBm ,dB,dBi, The following description is correct ().
(Select 3 Answers)

Question7: After wireless users connect to the wireless signal point, they can't get it IP Address, what are the possible reasons ()? (Select 2 Answers)

Question8: The omnidirectional antenna appears on the horizontal pattern as ()Spend.

Question9: For Huawei AC To create a user, first use aaa Command to enter the view.

Question10: BSS Full name Basic Service Set ,BSS It can be divided Independent BSS and Infrastructure BSS Two kinds.

Question11: Regarding the two major PoE standards, the following statement is incorrect ().
(Select 2 Answers)

Question12: In a dual-link backup network, AP According to what distinguishes the main use AC And spare AC of()?
(Select 3 Answers)

Question13: exist 802.11 In the frame, which type of message is used by the terminal to receive data packets in the power-saving mode?

Question14: Terminal is different VLAN The roaming within belongs to ().

Question15: DSSS The modulation methods used are BPSK and QPSK .

Question16: Which of the following commands can be viewed AC Current configuration()?

Question17: To the following WLAN In the description of the network diagram, the error is ().

Question18: Which of the following are AP Factors to consider in capacity planning ().
(Select 3 Answers)

Question19: MIMO The antenna configuration is usually expressed as " M*N ",in M and N What does each mean ()?
(Select 2 Answers)

Question20: When did the initial application of wireless networks begin ()?

Question21: Which of the following options is the frequency range supported by China 5GHz Frequency band()?

Question22: There are three ways to judge Huawei's load balancing: traffic mode, session mode, and virtual switching mode.

Question23: According to the different signal parameters controlled, what modulation methods can be divided into ()? (Select 3 Answers)

Question24: In huawei eSight The maximum number of layers supported by the location topology in the network management system is layer ().

Question25: What are China's mandatory standards for wireless LAN security ()?

Question26: Which technology belongs to the wireless metropolitan area network () below?

Question27: If you don't configure it, AP Which default authentication method is supported ()?

Question28: What frame does the wireless client actively scan to obtain the surrounding wireless network information ()?

Question29: 802.11g What is the bandwidth of each channel of the frequency band ()?

Question30: Which of the following functions does the Huawei WLAN planning tool have ()?
(Select 3 Answers)

Question31: 802.11n Standard uses dual band (2.4GHz and 5GHz ), the theoretical transmission rate can reach up to 300Mbps, The actual test rate can reach arrive 100Mbps above.

Question32: How to set the condition of switching trigger (). (Select 2 Answers)

Question33: Which of the following options are the basic functions of configuring Huawei wireless controllers ()? (Select 3 Answers)

Question34: and 802.11a/b/g The standards are different, 802.11n Protocol is dual-frequency working mode (support 2.4GHz and 5GHz Two working frequency bands).

Question35: WIDS Attack detection contains ().
(Select 3 Answers)

Question36: Among the following priority queues, the () queue has the highest default priority.

Question37: 802.11g What rates can be supported?

Question38: 802.11 The parameter used in the frame to check the integrity of the received frame is ()

Question39: Point-to-point wireless bridges can be used to connect two networks located at different locations. In the wireless backbone connection, they are set to different channels. Root AP and Leaf AP Should be set

Question40: Not loaded license Time AC6605 Supported by default AP The number is ().

Question41: The following pairs PSK The authentication description is wrong ().

Question42: eSight The network management is Huawei's dedicated network management platform, but it can only manage Huawei's own equipment.

Question43: Int-Serv The model provides users with end-to-end absolute

Question44: Which of the following options belong EDCA Parameters? (Select 2 Answers)

Question45: because 802.11a The maximum rate supported is the same as 802.11g. The maximum rate supported is the same, so 802.11a Protocol is backward compatible 802.11g Agreement.

Question46: 802.11 In the frame, it is used to record the network allocation vector ( NAVWhat is the value of ()?

Question47: 2.4 GHz What is the frequency band US non-overlapping channel ()?

Question48: Which of the following statements is correct ()?
(Select 2 Answers)

Question49: TKIP encrypted IV the length of the vector is () bit.

Question50: To obtain better coverage, try to use AP Signal can ( ) Through the wall.

Question51: Among the following options, () is the reason for using 5G priority access.

Question52: CAPWAP Tunnel encapsulation AC The port number of the side data packet is5246 , The control message port number is5247 .

Question53: pass through FTP Way to upgrade AP, You need to ensure AP and FTP Servers can communicate with each other, and AP Put the upgrade file in FTP Root directory.

Question54: Which of the following descriptions of management VLAN is correct is ().

Question55: Which of the following statements are correct () ? (Select 3 Answers)
(Select 3 Answers)

Question56: if AP Work in infrastructure mode, then AP The working state at this time is full-duplex mode.

Question57: In the WDS point-to-point network, the backbone link between Root AP and Leaf AP is connected in the 5GHz frequency band. The frequency band is 149. Which of the following frequency bands () should Leaf AP use?

Question58: 802.11b Which channels in the protocol do not overlap each other()? (Select 3 Answers)

Question59: In huawei eSight In the network management, add WLAN Equipment methods include (). (Select 3 Answers)

Question60: WLAN The commonly used radio frequency cables in the system are (). (Select 3 Answers)

Question61: For indoor distributed APs, which of the following descriptions is correct is ().

Question62: TKIP Encryption ratio WEP Encryption security is high because of (). (Select 3 Answers)

Question63: In order to facilitate management and maintenance, AP The power supply mode is generally preferred to select () for power supply.

Question64: AP Domain AP The deployment type does not include ().

Question65: For the lobe width, which of the following descriptions is correct is (). (Select 3 Answers)

Question66: In the following command (), you can view the current version information.

Question67: If it is turned on on the switch PoE The function of this, you can no longer access traditional equipment on these interfaces.

Question68: AP There are several types of domain deployment (). (Select 3 Answers)

Question69: Huawei AC6605 What is the command to switch between the wired side and the wireless side ()?

Question70: Huawei Box Wireless Controller AC6605 support twenty four Piece PoE Interface in WLAN Can be directly connected when networking AC of AP Make a supply Electricity.

Question71: According to the following configuration example, the following statement is correct ().
[AC] dhcp enable
[AC] interface VLANif100
[AC-VLANif100] ip address 10.1.100.1 24
[AC-VLANif100] dhcp select interface
[AC-VLANif100] quit

Question72: 802.11b Support () channels in the United States, among which () channels do not overlap?

Question73: an examination AP What is the command of the running system version ()?

Question74: SSID What is the Chinese name of ()?

Question75: for AC6605 , The following command () can be used to view AP Is it online?

Question76: 802.11a What are the supported rates ()?

Question77: Which of the following rates is not 802.11
a. The rate supported by the protocol ()?

Question78: The lobe width is a very important parameter commonly used in directional antennas. It refers to the width of the antenna's radiation pattern below the peak (.)dB The angle of the premises

Question79: AP What are the reasons for being unable to go online ()?
(Select 3 Answers)

Question80: What are the general methods to solve co-channel interference (). (Select 3 Answers)

Question81: The following is for thin AP Is the description correct ()?

Question82: Spread spectrum ( spread-spectrum ) Technology is to use ISM The basis of frequency band transmission of wireless data.

Question83: AP The size of the coverage area is controlled by ().
(Select 2 Answers)

Question84: The following () service model can provide end-to-end QoS services, but the scalability is not good.

Question85: Used as AP and AC Establish CAPWAP tunnel VLAN What is it VLAN ()?

Question86: The following about SSID The statement is wrong ().

Question87: AP If you want to pass DNS Server fetch AC of IP Address, first get your own IP address,DHCP Server and DNS of IP address.

Question88: Originally only supported TKIP The wireless network card can be upgraded through the driver to support AES encryption.

Question89: Metal objects have a greater attenuation effect on wireless signals, AP Or the antenna should not be placed behind a metal ceiling, etc.

Question90: exist WLAN middle ACK What type of frame() does the frame belong to?

Question91: Which of the following options is correct ()? (Select 3 Answers)

Question92: Perform connectivity test AP or AC Must be online.

Question93: Regarding the telnet management of AC6605, the following statement is wrong ().

Question94: Large companies have more video conferences, and QoS generally adopts the () service model.

Question95: 802.11 There are three frame types, namely (). (Select 3 Answers)

Question96: 802.11 In the frame, it means that the wireless station AP When sending a signal, To DS and From DS What are the values of ()?

Question97: about 5G The working principle of priority, the following statement is correct ().

Question98: The electrical performance indicators of the antenna include ().
(Select 3 Answers)

Question99: display ap all Command can be viewed AP of MAC ,Type And running status.

Question100: The following description of TKIP encryption is wrong ().

Question101: antenna A The gain is 11dBi ,antenna B The gain is 8dBi , You can say the antenna A Than antenna B The gain is large ().

Question102: AAA It is a management framework, which is commonly used to implement () protocol.

Question103: The two commonly used units to describe antenna gain are dBi and dBd , The conversion relationship between them is: dBi=dBd+2.14 .

Question104: Which is the longest interval between 802.11 frames ()?

Question105: Which of the following is IEEE A wireless local area network standard originally formulated ()?

Question106: If one wireless client connects to two AP identical SSID Next, what is used to determine which wireless terminal is connected to? ()?
AP

Question107: AC6605 supports three ways to establish AP and AC intercommunication, what are the differences ()?
(Select 3 Answers)

Question108: For the choice of WLAN coverage antennas, it is recommended to choose () for long and narrow areas, and () for wide and short-distance areas.