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

M Indicates the number of transmission antennas

N Indicates the number of receiving antennas

M Indicates the number of transmission antennas

N Indicates the number of transmission antennas

N Indicates the number of receiving antennas

M Indicates the number of receiving antennas

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

The two protocols use different technologies

Compared with 802.11a/b/g, the technical advantages of 802.11n include which of the following aspects ()?

The maximum theoretical transmission rate is increased to 600Mbps

Backward compatible with 802.11a/b/g protocol

The other three items are correct

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

Type for 00 Time represents management

Type for 01 Time represents data frame

Type for 10 Time represents control frame

Type for 00 Indicates reserved use

Type for 00 Time represents management

802.11 In the frame, STA Which type of frame () does the association request and authentication request belong to?

Data frame, control frame, management frame have this function

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

Basic Service Set of Infrastructure Mode

Extend the basic service set of structural mode

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

SSID Technology can divide a wireless local area network into several sub-networks that require different authentication. Each sub-network requires independent authentication. Only users who pass the authentication can enter the corresponding sub-network to prevent unauthorized users from entering This network.

BSSID Is actually AP of MAC Address, used to identify AP Managed BSS , In the same AP Inside BSSID and SSID One-to-one mapping.

in a ESS Inside SSID Is the same, but for ESS Within each AP Corresponding BSSID Are not the same. If oneAP Can support multiple at the same time SSID , Then AP Will assign different BSSID To correspond to these SSID .

SSID Technology can divide a wireless local area network into several sub-networks that require different authentication. Each sub-network requires independent authentication. Only users who pass the authentication can enter the corresponding sub-network to prevent unauthorized users from entering This network.

BSSID Is actually AP of MAC Address, used to identify AP Managed BSS , In the same AP Inside BSSID and SSID One-to-one mapping.

Users can be in different SSID Roaming is realized below.

in a ESS Inside SSID Is the same, but for ESS Within each AP Corresponding BSSID Are not the same. If oneAP Can support multiple at the same time SSID , Then AP Will assign different BSSID To correspond to these SSID .

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?

Apart from 149 It will be all right

802.11a What are the supported rates ()?

6, 9, 12, 18, 24, 36, 48, 54 Mbps

802.11g What rates can be supported?

1,2,5.5,11&6,9,12,18,24,36,48,54 Mbps

1,2,5.5,11&6,9,12,18,24,30,36,48,54 Mbps

6, 9, 12, 18, 24, 36, 48, 54 Mbps

1,2,5.5,11&6,9,12,18,24,36,48,54 Mbps

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

display user-interface console 0

Huawei H12-311_V3.0 Practice Test 3 - Free Online Exam Prep & Questions

Radio frequency mainly uses spread spectrum technology. Which of the following technologies belong to spread spectrum technology ()? (Select 2 Answers)

FHSS

DSSS

QPSK

OFDM

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