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Question 1:

When did the initial application of the wireless network begin?

A. During a major war

B. During the Second World War

C. Late 20th century

D. After 2000

Correct Answer: B

Question 2:

IEEE is the standard organization responsible for the use of wireless frequencies in the United States.

A. True

B. False

Correct Answer: B

Question 3:

Which of the following standards organizations is implementing WLAN technology interoperability for WLAN device authentication?

A. WiFi Alliance




Correct Answer: A

Question 4:

Which of the following protocols are IEEE 802.11 standards Select 3 Answers)?

A. 802.11a/b/g/n

B. 802.11i

C. 802.1X

D. 802.11s

Correct Answer: ABD

Question 5:

Which of the following standards is WLAN (Select 2 Answers)?

A. 802.11a/b/g/n



D. 802.11i

Correct Answer: BC

Question 6:

The CAPWAP protocol is a WLAN standard proposed by the IEEE standards organization in April 2009 for communication between AC and thin APs.

A. True

B. False

Correct Answer: B

Question 7:

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

A. 802.11a

B. 802.11b

C. 802.11g

D. 802.11n

Correct Answer: BCD

Question 8:

How many channels does China support in the 2.4 GHz band?

A. 11

B. 13

C. 3

D. 5

Correct Answer: B

Question 9:

Which of the following options is in the 5GHz band supported by China?

A. 5.15~5.25GHz

B. 5.25~5.35GHz

C. 5.725~5.825GHz

D. 5.725~5.850GHz

Correct Answer: D

Question 10:

What are the modulation methods (Select 3 Answers) depending on the signal parameters being controlled?

A. amplitude modulation

B. frequency modulation

C. phase modulation

D. modulation

Correct Answer: ABC

Question 11:

Which modulation method does the following picture belong to?

A. amplitude modulation

B. frequency modulation

C. phase modulation

D. modulation

Correct Answer: B

Question 12:

What is the name of the first radio communication network based on packet technology?




D. NSFnet

Correct Answer: C

Question 13:

What are the WLAN operating bands (Select 2 Answers)?

A. 2 GHz

B. 5 GHz

C. 5.4 GHz

D. 2.4 GHz

Correct Answer: BD

Question 14:

How many channels can the 2.4 GHz band be divided into?

A. 14

B. 13

C. 11

D. 3

Correct Answer: A

Question 15:

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

A. 20 MHz

B. 22 MHz

C. 5 MHz

D. 10 MHz

Correct Answer: C