该文档为华为认证的无线题库，题库知识覆盖非常的全面，适合拿来练练手

QUESTION 5

以下哪些标准是ⅥiF|联盟制定的()?

A.80211a/b/gn

B. WPA

C. WPA2

D.802.11i

Correct Answer: BC

Section: (none)

Explanation

Explanation/Reference

QUESTION 6

CAPWAP协议是有EEE标准组织在2009年4月提出的一个WLAN标准,用于AC和瘦AP之间的通信

A. True

B. False

Correct answer: B

Section: (none)

Explanation

Explanation/Reference

QUESTION 7

以下哪些协议支持2.4GHz频段

A.802.11a

B.802.11b

C.802.11g

D.802.11n

Correct Answer: BCD

Section: (none)

涠记坛

Explanation

bbs. hh010 com

Explanation/Reference:

QUESTION 8

中国在2.4GHz频段支持的信道个数有多少个()?

A.11

B.13

Correct answer: B

Section:(none)

Explanation

xplanation/Reference

QUESTION 9

以下选项中哪个频段范围属于中国支持的5GHz频段()?

A.5.15~5.25GHz

B.525~535GHz

C.5.725~5.825GHz

D.5.725~5.850GHz

Correct Answer D

m

Section:(none)

Explanation

Explanation/Reference

2012年12月31日,工信部宣布开放515~535GHz频段给5G使用,加上之前开放的5725~5850GHz,现

在5G可以是20MHz带宽的8个信道或者40MHz的4个信道

QUESTION 10

根据所控制的信号参量的不同,调制方式可以分为哪些()?

A.调幅

B.调频

C.调相

D.调波

Correct Answer: ABC

Section: (none)

Explanation

Explanation/Reference

QUESTION 11

下图属于那种调制方式0?

A.调幅

B.调频

C.调相

D.调波

Correct answer: B

Section:(none)

Explanation

Explanation/Reference

QUESTION 12

第一个基于封包式技术的无线电通讯网络名字叫做什么()

A. NTERNET

B. ARPANet

C, ALOHNET

D. NSFnet

Correct answer: c

Section: (none)

Explanation

Explanation/Reference

通正

QUESTION 13

om

WLAN的工作频段包括哪些?

A. 2GHz

B. 5GHZ

C. 5. 4GHZ

D. 24GHZ

Correct Answer: BD

Section: (none)

Explanation

Explanation/Reference:

QUESTION 14

24GHz频段最多可以划分为多少个信道?

A.14

B.13

C.11

Correct answer:A

Section:(none)

Explanation

Explanation/Reference

9

10111213

24122.41724222427243224372.44224472.4522.45724622.4672472

:"∴:"∷":::

:∷

::"

22 MHz

2.4 GHz WiFi頻道與頻夷示意孟

2.4GHz频段范围内有每隔5MHz分隔的频道14个(除了第14信道与第13信道相隔了12MHz)

QUESTION 15

24GHz频段美国非重叠信道是什么()?

A.2,7,12

B.3,8,13

C.1,6,11

D.3,7,13

Correct Answer: c

Section:(none)

Explanation

通正

Explanation/Reference

QUESTION 16

24GHz频段的各信道的中心频率之间的距离多大()

A. 20MHz

B. 22MHZ

C. 5MHz

D. 10MHZ

Correct Answer: c

Section: (none)

Explanation

Explanation/Reference:

QUESTION 17

80211g频段每个信道带宽多大()?

A. 25MHz

B. 20MHZ

C. 50MHz

22MHZ

Correct answer: B

Section: (none)

Explanation

Explanation/Reference

QUESTION 18

以下哪个协议可以同时攴持24GHz频段和5GHz频段()?

A.802.11a

B.802.11b

C.802.11g

D.802.11n

Correct Answer: D

Section: (none)

Explanation

Explanation/Reference

80211a是5GH的,80211b和g都是24GH的,80211n是同时支持24和5GHz的

记D

v·TE

802.11 network PHY

Fre

Band-

802.11

Release

Stream data rate的7

quency width

protoc。l

date

(GHz)÷(MHz)

(Mbit/s)

802.11-1997

Jun 1997

2.4

22

1,2

Sep 1999

20

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

3.7

A

b

Sep 1999

2.4

22

1.2.5.5.11

Jun 2003

2.4

20

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

400nsol:7.2,14.4,21.7,28.9,43.3,57.8,65

20

800nsG:6.5,13,19.5,26,39,52,58.5,

n

Oct 2009

2.45

400nsG|:15.30.45.60.90.120.135.15

40

800nsG|:135.27.40.5.54.81.108.1215

400nsG|:72,144,21.7,289,433,578,65,722

20

800nsG|:65,13.195,26,39,52,585,65,7

400nsGl:15.30.45.60.90.120.135.150.1

40

800nsG|:13.5.2740.5.54.81.108.121.5.135

ac

Dec 2013

400nsG|:32.5.65.97.5.130.195,260.292.5,325

80

800nsG|:292.585.878.117.1755.234.263.2.29

400nsGl:65,130.195,260,390,520,585,650,

160

800nsG|:58.5,117,175.5,234,351,468,702

ad

Dec 2012

60

2,160

Up to 6,912(6.75 Gbit/s)[10)

ah

Est. Dec 2016[61 0.9

Up to 20

Est. Jul201745/60

ax

Est. Dec201862.4/5

Up to 10.53 Gbit/s

ay

Est. Nov 2019[6160

8000

Upto100.000(100Gbts)

az

Est. Mar 2021[6160

A1 A2 IEEE 802.11y-2008 extended operation of 802. 11a to the licensed 3. 7 GHz band. Increased power lim

B1B2 B3 B4 B5 B6 Assumes short guard interval (SGI)enabled

C1 C2C3 C4 C5 C6 Assumes short guard interval(SGl) disabled

QUESTION 19

2.4GHz频段中国规定的工作频率是哪个范围?

A.2,4GHz-2.4835GHz

B.2.471GHz2.497GHz

C.24465GHz-24835GHz

D.2.445GHz-2475GHz

Correct answer:A

Section: (none)

Explanation

Explanation/Reference

通记

QUESTION 20

以下哪些技术工作在5GHz()?

A.雷达

B.蓝才

C.红外

D.数字卫星

Correct Answer: AD

Section: (none)

Explanation

Explanation/Reference

蓝牙工作在2.4GHz,红外一般不讨论频率而是说光的波长。另外两个工作在5GHz频段。

QUESTION 21

基本服务集是80211网络的基本组件,由一组相互通信的工作站所构成

A. True

B. False

Correct Answer: A

Section: (none)

Explanation

Explanation/Reference

ss- Service set,服务集

BSS- Basic service set,基本服务集

ssD- Service set Identifier服务集标识符

BSSID-基本服务集标识符

简单说,在基础型BSS中,BSS|D就是AP的mac地址,而在iSS中,则是一个本地唯一的MAC地址,该地

址由一个46位的随机数生成,并且∪M位为0,G儿位为1.另外对MAC地址广播来说,其名称为 wildcard

BsS|D。

QUESTION 22

BSSD实际上就是AP的mac地址,用来表示AP管理的BSS

A. True

B. False

Correct answer: B

Section:(none)

Explanation

Explanation/Reference

QUESTION 23

下面哪个是EE最初制定的个无线局域网标准

A.|EEE802.11

B.EEE802.10

C.|EEE802.12

D.|EEE802.16

Correct Answer: a

Section:(none)

Explanation

Explanation/Reference

QUESTION 24

华为的AP产品仅能支持配置一个SS|D

A. True

B. False

Correct Answer: B

Section: (none)

Explanation

器记远

Explanation/Reference

QUESTION 25

WDS技术提高了整个网络结构的灵活性和便捷性,但是只能支持点对点的工作模式

A. True

B. False

Correct Answer: B

Section: (none)

Explanation

Explanation/Reference

QUESTION 26

SSD的中文名称是什么?

A.基本服务集

B.基本服务区域

C.扩展服务集

D.服务集标识

Correct Answer: D

Section: (none)

Explanation

Explanation/Reference

QUESTION 27

山多个AP以及连接它们的分布式系统组成的基础架构樸式网络,也称为什么?

A.基本服务集

B.基本服务区域

C.扩展服务集

D.扩展服务区域

Correct Answer: c

Section: (none)

Explanation

Explanation/Reference

QUESTION 28

下面哪种AP模式不属于WDS网络?

A. RootAP

B. Middle aP

C. Bridge ap

D. Leaf ap

Correct Answer: c

Section: (none)

Explanation

Explanation/Reference

QUESTION 29

由一个无线AP以及关联的无线客户端组成的网络被称为什么()?

A. BSS

B. BSS

C. ESS

D. NSS

Correct Answer: B

Section:(none)

Explanation

Explanation/Reference

QUESTION 30

如果一个BSS中完全由STA组成的话,那么该BSS也称做什么?

A. BSS

B. ESS

C. SSID

D. BSA

Correct AnswerA

Section: (none)

鵠论坛

Explanation

bbshh010.com

Explanation/Reference

QUESTION 31

MeSh组网在以下哪个协议中定义的?

A.802.11a

B.802.11

C.802.11e