2 Communication

2 Communication

9th - 12th Grade

21 Qs

quiz-placeholder

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2 Communication

2 Communication

Assessment

Quiz

Computers

9th - 12th Grade

Practice Problem

Hard

Created by

Nguyễn Đăng

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21 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statements are correct?

1 Wireless transmission media doesn't require a physical cable

2 Wireless signals are sent through the air

3 Wireless signals can travel through walls

1 and 2

2 and 3

1 and 3

1, 2, and 3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Twisted pair cables is often used in

LANs

MANs

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which cable type is most often used in MANs?

Twisted pair cables

Coaxial cables

Fibre optic cables

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

WiFi and Bluetooth use _______________ _________ as the carrier of data transmission.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which option best describes how Bluetooth sends and receives radio waves?

Each device is assigned one of 79 possible IDs, devices with the same ID will be able to connect to each other

Each device uses one of 79 frequency channels to connect to another device

Each device uses a frequency from 0-79 GHz to connect to another device

Each device uses one of 79 Bluetooth-specific protocols to connect to another device

6.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A method of transmitting radio signals in which a device picks one of 79 channels at random. If the chosen channel is already in use, it randomly chooses another channel.

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Select all types of electromagnetic radiation

infrared

radio

microwave

ultraviolet

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