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Unit 6: Communication systems and digital information Flashcards | StudBud
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Unit 6: Communication systems and digital information
Unit 6: Communication systems and digital information
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Questions
30
Answers
1
Which technology uses infrared light for short-range communication?
GPS
WiMax
Infrared
Bluetooth
2
Digital signals are continuous and can vary frequency and amplitude
True
False
3
Which of the following is NOT a wireless system?
Television
Landline phone
Mobile phones
Wi-Fi
4
Bluetooth is used for long-range data communication
False
True
5
Using an antivirus is a recommend safety action for internet security.
True
False
6
What type of cable uses light to transmit data?
Paired cable
Coaxial
HDMI
Fibre optic
7
Which type of signals has continuous values?
Binary
Coaxial
Digital
Analogue
8
Wikis allow anyone with internet access to contribute content.
True
False
9
Vertical social networks group people with similar interests
True
False
10
What is the purpose of a transmission protocol?
Translate
Saving information
Speed up the signal
Set rules to send and receive data
11
Analogue signals have discrete values
False
True
12
GPS uses radio signals to determine location
False
True
13
The power of information includes the ability to create and share content online.
True
False
14
What is a common action to enhance internet safety?
Click on unknown links
Ignore privacy settings
Share personal information
Use an antivirus program
15
Fibre optic cables transmit electrical signals directly
True
False
16
A Common Internet security problems doesn’t include:
Banners
Antivirus
Virus attack
Hackers
17
What is the first stage of digital transformation?
AI integration
Electronic connection
Data collection
Wi-Fi connection
18
Vertical social networks are...
Social networks for people who are really into digitalisation
A set of online platforms that only allow users to post photos
communities of users who have similar reasons for Joining
communities of users with different interests and reasons for joining
19
What are the three parts of a communication system?
Antenna, cable and router
Internet, screen and file
Emitter, transmission protocol, receiver
Plug, signal and light
20
Digital information is data stored using computers
False
True
21
What does Bluetooth use to transmit data?
Light
Radio waves
Infrared
Fibre
22
The two most common sources of online information are...
Walkis
Newspapers
Web pages/ RSS new feed
Television broadcasts
23
What is communication?
Talking to people
Sending data to space
The transmission of electricity
The transmission of information from one place to another
24
The semantic web is another name for Web 3.0.
False
True
25
Wi-Fi uses light to transmit data
True
False
26
What type of communication uses cables?
Wired communication
Bluetooth
Radio
Wireless communication
27
Which one has a wide range and low error margin?
Post-electricity communication systems
Analogue
Television
Radio
28
Wireless communication systems don’t need physical cables
False
True
29
Which of the following is a characteristic of analogue signals?
They can only be transmitted over short distances
They have discrete values
They are always clear and free of errors
They are susceptible to distortion
30
Which cable contains hundreds of copper wire pairs?
Paired cable
Fibre optic
USB
Optical
