2 Communication
Quiz
•
Computers
•
9th - 12th Grade
•
Practice Problem
•
Hard
Nguyễn Đăng
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21 questions
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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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