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WorksheetsY8 T4
Total questions: 21
Worksheet time: 12mins
Devices connected over a small geographical location is known as?
Wide Area Network (WAN)
Wireless personal area network (WPAN)
Local Area Network (LAN)
WiFi
A firewall is needed because it...
Stops malware from spreading onto your computer system
Control which programs on a PC can send/receive data packets
Scans your PC for unwanted data packets
Stops your PC from sending and receiving data packets
The data inside RAM is volatile, what does this mean?
Data is stored on a hard drive
Data is lost after power loss
Data is saved after power loss
Data is read only
When you run multiple programs RAM becomes full, what is then used to run your programs?
ROM
RAM
Virtual Memory
The Operating System
Why do we need storage devices?
Store data permanently when turned off, volatile
Store data permanently when turned off, non-volatile
Store data when PC is turned on, non-volatile
Store data when PC is turned on, volatile
Which computing term means to break a complex problem down into smaller solvable problems?
Abstraction
Programming
Decomposition
Algorithmic Thinking
Which computing term means to reduce the complexity of a problem by removing unnecessary detail
Abstraction
Programming
Decomposition
Algorithmic Thinking
What best describes the term algorithm?
A sequence of instructions in order to solve a problem
A sequence of instructions that helps solve some problems
Getting a computer to solve a problem
A sequence of computer commands
How many times will the program print "Hello World"?
9 times
1 time
10 times
11 times
If userAge was 17, what would be the output?
"You are not old enough"
"You are 18 or over"
Both will be output
There will be an error
Why do computer use binary?
Easier for PC to remember instructions
Instructions can be processed quicker
PC is made up of transistors that only store on and off
PC has limited memory
Why do computer use hexadecimal?
Easier for computers to remember
Instructions can be processed quicker
Easier for people to communicate hexadecimal values
Humans do not understand Binary numbers
What is 0101 is denary/decimal?
5
11
4
101
What is 00001101 in denary/decimal?
13
12
187
9
What is 11011011 in denary/decimal?
211
133
220
219
What is 34 in binary?
01010101
00100010
11001100
00110010
Convert 88 to binary
10101011
01011000
00110011
01001100
Complete the binary addition..
01101100
01101010
01101110
01110111
'A' in ASCII is 01000001, what would be 'C' in ASCII be ?
01000010
01010001
11001100
01000011
What is meant by the term ASCII character set?
A universal set of characters using 16 bits or more
Set of characters for every language in the world in 7 bits
A limited set of characters uses 7 bits
A set of characters for everything - uses 16 bits
How does increasing colour depth and resolution affect an image?
Decrease image size but improve quality
Decrease image size and quality
Increase image size and quality
Increase the quality but file size does not change
