EMT Practice Test

1. Question Content...

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Question1: Not loaded license Time AC6605 Supported by default AP The number is ().

Question2: if AP Work in infrastructure mode, then AP The working state at this time is full-duplex mode.

Question3: Is the following statement about the introduction of frequency planning correct ()?
(Select 2 Answers)

Question4: ETSI Which country or region is the standards organization ()?

Question5: original 802.11 What is the working frequency band used by the agreement ()?

Question6: 802.11 Wireless LAN CSMA/CA Which of the following are included in the mechanism ()? (Select 3 Answers)

Question7: Configuration AP Authentication mode, AP What are the supported authentication methods ()? (Select 3 Answers)

Question8: BSS Which two basic service sets are included ()? (Select 2 Answers)

Question9: display ap all Command can be viewed AP of MAC ,Type And running status.

Question10: In the following command (), you can view the current version information.

Question11: Huawei AC6605 What is the command to switch between the wired side and the wireless side ()?

Question12: Which of the following devices belong to Huawei Wireless Dual Band AP(Access Point )?
(Select 2 Answers)

Question13: In a large wireless network deployment scenario, AC When configured to "Layer 3 networking + bypass mode + direct forwarding", the gateway of the wireless user should. Where is it located ()?

Question14: Which two of the following are PoE The power supply standard ()? (Select 2 Answers)

Question15: MIMO(Multiple input and multiple output) The client can use at most 3 Two spatial streams transmit data at the same time, and the maximum theoretical rate can reach , That is, multiple input and multiple output, using 600Mbps . 802.11n Technology wireless access point and guest

Question16: China in 2.4GHz How many channels does the frequency band support ()?

Question17: When did the initial application of wireless networks begin ()?

Question18: 802.11 In the frame, Address Which address bit represents the address of the receiving end of the frame ()?

Question19: Which of the following statements about region is correct ()?
(Select 3 Answers)

Question20: 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.

Question21: What was the name of the first radio communication network based on packet technology ()?

Question22: exist 802.11 In the frame, which type of message is used by the terminal to receive data packets in the power-saving mode?

Question23: 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 ()?

Question24: CCMP Encryption ratio TKIP Encryption security is high because of ().

Question25: WLAN AP It can be powered by ().
(Select 3 Answers)

Question26: Among the following obstacles, () has the largest loss of wireless signals.

Question27: The following statement is correct ().
(Select 3 Answers)

Question28: The following is for thin AP Is the description correct ()?

Question29: AC6605 supports three ways to establish AP and AC intercommunication, what are the differences ()?
(Select 3 Answers)

Question30: Which of the following options are 802.11b/g What are the differences between the agreements? (Select 3 Answers)

Question31: What are the prerequisites for users to achieve three-tier roaming ()?
(Select 3 Answers)

Question32: Which of the following options are the basic functions of configuring Huawei wireless controllers ()? (Select 3 Answers)

Question33: The following description of TKIP encryption is wrong ().

Question34: an examination AC What is the command for online users ()?

Question35: exist 1 Floor deployment 3 Piece AP, The channels from left to right are 1,6,11, At this time 2 Floor deployment 3 Piece AP Channel should be be divided into( ).

Question36: A company wants to deploy WLAN, the company has purchased a batch of wireless APs that support 802.11n, when WLAN is deployed, only support Only 802.11n wireless clients can connect to the company's WLAN

Question37: There are four wireless STA, According to the following backoff time parameters, which workstation has the priority to occupy the channel?

Question38: Among the following options, the common WLAN The source of interference is ().
(Select 3 Answers)

Question39: Which of the following is a restart AC6605 The command()?

Question40: 2.4 GHz What is the distance between the center frequencies of the channels in the frequency band ()?

Question41: Huawei AP The product can only support one configuration SSID .

Question42: For the polarization of electromagnetic waves, which of the following descriptions is correct is (). (Select 3 Answers)

Question43: Huawei plug-in controller ACU Board manageable AP What is the maximum number of ()?

Question44: Regarding the networking mode, the following description is correct ().

Question45: As a guarantee WLAN There will be no interference between the various channels of the network, which of the following frequency bands belong to China5.8GHz Use frequency band()? (Select 2 Answers)

Question46: Below does not belong AP The binding template is ().

Question47: AP The systematic process of radio frequency resource management is ().

Question48: 802.11n MAC Which of the following are included in the layer improvement technology ()? (Select 2 Answers)

Question49: The following Huawei AP Which AP support SFP Fiber interface()?

Question50: Indoor installation AP The power is generally () mW .

Question51: Originally only supported TKIP The wireless network card can be upgraded through the driver to support AES encryption.

Question52: 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).

Question53: Which of the following is correct about the power calculation ()?
(Select 3 Answers)

Question54: when AC Only one interface is connected to the aggregation layer switch, and the user traffic is directly out of the public network through the aggregation layer switch, and the networking mode that does not flow through should be (). AC At this time

Question55: for CAPWAP Agreement, the error described below is ().

Question56: The following transmission rate can reach 54Mbps What are the wireless LAN standards and above ()? (Select 3 Answers)

Question57: 802.11g What rates can be supported?

Question58: AP What are the reasons for being unable to go online ()?
(Select 3 Answers)

Question59: Which of the following options is the frequency range supported by China 5GHz Frequency band()?

Question60: exist WDS In the deployment, what kinds of bridge networking modes are included ()? (Select 3 Answers)

Question61: about WDS Which of the following statements is correct ()? (Select 2 Answers)

Question62: The 802.11 physical layer standard defines some common operations on the physical layer of wireless networks: such as QoS, security, and roaming operations.

Question63: 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.

Question64: Which of the following technologies work at 5 GHz ()? (Select 2 Answers)

Question65: The equipment manufacturer can usually be judged according to the following ().

Question66: 802.11b Which channels in the protocol do not overlap each other()? (Select 3 Answers)

Question67: Which of the following statements are correct () ? (Select 3 Answers)
(Select 3 Answers)

Question68: The distance between the center frequencies of the two channels is less than or equal to In order to avoid adjacent channel interference during domain channel planning, the same channel is not allowed to be used.
25MHz When there is an overlapping area between the channels, there will be some interference, so in the adjacent area

Question69: When a hardware failure occurs in an AP in the network, in order to avoid data reconfiguration, the user can quickly complete the AP replacement by configuring the AP.
replace.

Question70: create radio-profile Must be bound wmm-profile Only possible, otherwise there will be configuration errors.

Question71: eSight The network management is Huawei's dedicated network management platform, but it can only manage Huawei's own equipment.

Question72: The electrical performance indicators of the antenna include ().
(Select 3 Answers)

Question73: 2.4 GHz What is the range of operating frequency specified by China ()?

Question74: Among the following encryption methods, the most secure is ()

Question75: Antennas are classified according to directivity and can be divided into () antennas and () antennas.
(Select 2 Answers)

Question76: exist 802.1X In the agreement, you must have () to be able to complete the authentication and authorization of the user. (Select 3 Answers)

Question77: Barker Code is a 11 Bit sequence (e.g. 10110111000 ), there are advantages in wireless transmission, which can effectively reduce interference, but it reduces efficiency.

Question78: If a AP Has been added offline, then AP You can go online directly.

Question79: What series of Huawei switches () is the Huawei plug-in controller ACU board suitable for?
(Select 3 Answers)

Question80: AP There are several types of domain deployment (). (Select 3 Answers)

Question81: 802.11 In the frame, Frame Control In position Type What is the correct correspondence with the frame format ()?

Question82: 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.

Question83: How to set the condition of switching trigger (). (Select 2 Answers)

Question84: Used as AP and AC Establish CAPWAP tunnel VLAN What is it VLAN ()?

Question85: if AP The transmit power is 1mW , Converted to dBm After () dBm.

Question86: About Huawei WLAN Description of the characteristics of the product, the following statement is correct ().

Question87: SSID What is the Chinese name of ()?

Question88: By multiple AP And the infrastructure mode network composed of distributed systems connecting them, also called what ()?

Question89: WDS Technology improves the flexibility and convenience of the entire network structure, but it can only support point-to-point working mode.

Question90: exist WLAN In the networking configuration, finally AC6605 What command must be executed to send the configuration to AP1 middle()?

Question91: In an 802.11 frame, what kind of control message () should be sent by the terminal to obtain access to the wireless medium?

Question92: Which of the following statements is correct ()?
(Select 2 Answers)

Question93: In a dual-link backup network, AP According to what distinguishes the main use AC And spare AC of()?
(Select 3 Answers)

Question94: According to the different signal parameters controlled, what modulation methods can be divided into ()? (Select 3 Answers)

Question95: PPPoE Certified in WLAN When used, and WLAN The authentication encryption used by itself does not matter.

Question96: original 802.11 What is the maximum rate supported by the protocol Mbps ()?

Question97: Which of the following agreements are IEEE customized 802.11 standard() ? (Select 3 Answers)

Question98: Which of the following options is 802.11g The maximum rate supported by the protocol ()?

Question99: The following description about dual-link backup networking is incorrect ()

Question100: According to the following output, the following statement is correct ().
<Quidway> display device
AC6605-26-PWR's Device status:
Slot Sub Type Online Power Register Status Role
-----------------------------------
0-AC6605-26 Present PowerOn Registered Normal Master
POWER Present PowerOn Registered Normal NA
(Select 2 Answers)

Question101: The gain of the antenna can be explained ().

Question102: AP Transmit power 20dBm , Antenna gain 4dBi , Cable and device loss 1dB , Terminal receiving antenna gain 2dBi , Space propagation loss 80dB , Terminal receiving level RSSI= ().

Question103: AC Perform the load balancing process according to () information.

Question104: DSSS The modulation methods used are BPSK and QPSK .

Question105: IEEE 802.11 The standard used to define roaming is ().