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H12-311_V3.0 PDF

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  • Exam Name: HCIA-WLAN V3.0
  • Last Update: Apr 22, 2024
  • Questions and Answers: 297
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H12-311_V3.0 Practice Exam Questions with Answers HCIA-WLAN V3.0 Certification

Question # 6

Which of the following 2.4GHz The frequency bands are non-overlapping

channels (). (Select 3 Answers)

A.

6 and 11

B.

3 and 8

C.

4 and 8

D.

4 and 10

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Question # 7

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

A.

RF template

B.

AP template

C.

ESS template

D.

Planning table template

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Question # 8

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

A.

Carrier sense

B.

Multiple access

C.

Conflict detection

D.

Conflict avoidance

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Question # 9

exist PoE Terminology PSU Full name is Power Supply Unit , Refers to the power supply unit, such as PoE The Ethernet interface of the switch.

A.

True

B.

False

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Question # 10

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.

A.

True

B.

False

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Question # 11

What are the prerequisites for users to achieve three-tier roaming ()?

(Select 3 Answers)

A.

The two APs that the user roams over must have the same SSID

B.

The two APs for user roaming switching must have the same VLAN

C.

User roaming requires two AP signals to cover overlapping areas

D.

The SSID released by the two APs of the user roaming handover must have the same authentication method

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Question # 12

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

A.

True

B.

False

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Question # 13

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

A.

11Mbps

B.

22Mbps

C.

54Mbps

D.

108Mbps

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Question # 14

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

A.

Independent basic service set

B.

Basic Service Set of Infrastructure Mode

C.

Extend the basic service set

D.

Extend the basic service set of structural mode

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Question # 15

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

A.

2G/3G

B.

WLAN

C.

Bluetooth

D.

WiMAX

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Question # 16

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

A.

WiFi

B.

WAPI

C.

WLAN

D.

WiMAX

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Question # 17

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

A.

RTS

B.

CTS

C.

ACK

D.

PS-Poll

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Question # 18

802.11a exist 20M How many sub-carriers can be used to transmit data in the mode ()?

A.

48

B.

52

C.

54

D.

56

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Question # 19

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

A.

20 MHz

B.

22 MHz

C.

5 MHz

D.

10 MHz

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Question # 20

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

A.

True

B.

False

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Question # 21

single AP What is the area covered ()?

A.

BSA

B.

ESA

C.

SSA

D.

TSA

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Question # 22

A large number of devices appear AP and AC How to deal with the version mismatch failure ().

A.

Upgrade the versions to match each other

B.

replace AP equipment

C.

Replace the switch

D.

an examination POE Is the power supply normal

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Question # 23

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

A.

1645

B.

1646

C.

5246

D.

5247

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Question # 24

Huawei AP The product can only support one configuration SSID .

A.

True

B.

False

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Question # 25

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

A.

AP Periodically to AC Send its associated STA Information

B.

STA Periodically report the current associated AP Logo

C.

AC Timed query AP Associated STA number

D.

STA Periodically search the surrounding AP Information and through association AP Report AP Logo

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Question # 26

about AP6610DN , The following statement is wrong ().

A.

AP6610DN Is enhanced outdoor AP

B.

AP6610DN Is dual frequency AP,in 5GHz Frequency band can be used for wireless bridging and user access

C.

AP6610 Only one Ethernet interface, the highest bandwidth 1000M

D.

AP66010DN Support both Ethernet interface and optical fiber interface

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Question # 27

What series of Huawei switches () is the Huawei plug-in controller ACU board suitable for?

(Select 3 Answers)

A.

S9300 series switches

B.

S9700 series switches

C.

S7700 series switches

D.

S5700 series switches

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Question # 28

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

(Select 3 Answers)

A.

priority

B.

AC of IP address

C.

AC Load condition

D.

AC response AP Time of day

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Question # 29

The MEth0/0/1 interface of AC6605 is used for in-band network management. The default address is: 192.168.1.1/24, and it cannot be modified.

A.

True

B.

False

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Question # 30

Which of the following protocols support 2.4GHz Frequency band()? (Select 3 Answers)

A.

802.11a

B.

802.11b

C.

802.11g

D.

802.11n

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Question # 31

The electrical performance indicators of the antenna include ().

(Select 3 Answers)

A.

Gain

B.

Lobe width

C.

Power size

D.

Polarization mode

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Question # 32

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

A.

AP power up to 800mW

B.

Can be deployed in conjunction with the operator's 3G network

C.

Waterproof and dustproof

D.

AP6310SN supports dual frequency mode

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Question # 33

according to AP and AC The inter-network architecture can divide the networking mode into two-tier networking and three-tier networking.

A.

True

B.

False

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Question # 34

If there is a high demand for WLAN capacity in a coverage area, the construction method of () should be considered.

A.

Combination of indoor distribution system

B.

Combination of outdoor distribution system

C.

Indoor installation

D.

Outdoor AP+ directional antenna

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Question # 35

Configure the security policy of the wireless network as WEP , You need to AC6605 The security template is configured as follows ().

A.

security-policy wep

wep authentication-method open

wep key wep-40 hex 0 1234567890

wep default-key 0

B.

security-policy wep

policy wep share-key

wep key wep-40 hex 0 1234567890

wep default-key 0

C.

authentication policy wpa

wpa authentication-method share-key

wpa key wpa-40 hex 0 1234567890 wpa

default-key 0

D.

authentication policy wpa2

wpa2 authentication-method share-key

wpa2 key wpa2-40 hex 0 1234567890

wpa2 default-key 0

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Question # 36

For one adopts WPA2 PSK Certified and SSID For broadcast wireless networks, users can double-click the username and password to access the network. SSID And enter the correct use

A.

True

B.

False

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Question # 37

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

A.

True

B.

False

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Question # 38

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

A.

Within the range of the main lobe, the power density relative to the maximum radiation direction is reduced by half (3dB) Angle

B.

The narrower the lobe width, the better the directivity, the longer the radiation distance, the stronger the anti-interference ability

C.

The pattern usually has two or more lobes

D.

Only within the coverage of the half power angle, the terminal can receive the signal

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Question # 39

Which of the following descriptions of business VLAN is correct is ().

(Select 3 Answers)

A.

Mainly responsible for transmitting data when WLAN users go online

B.

PVID VLAN under the WLAN ESS interface

C.

Service VLAN under the service set template

D.

If the data tunnel is used for forwarding, user data will not be transmitted through the business VLAN business

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Question # 40

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

A.

Compared with the three-layer network, the two-layer network is more suitable for large-scale networks such as parks and stadiums.

B.

The advantage of the three-layer network is simple configuration and easy networking

C.

if AC The ability to process data is relatively weak, it is recommended to use bypass networking

D.

In a direct-connected network, AP Business data can not go through AC And directly reach the upstream network

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Question # 41

Which of the following devices belong to Huawei Wireless Dual Band AP(Access Point )?

(Select 2 Answers)

A.

AP5010DN

B.

AP5010SN

C.

AP6010SN

D.

AP6010DN

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Question # 42

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.

A.

True

B.

False

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Question # 43

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

A.

Basic service set

B.

Basic service area

C.

Extended service set

D.

Extended service area

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