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WorksheetsAQA GCSE Computer Science: Computer Systems (Paper 2)
Total questions: 20
Worksheet time: 12mins
What is 53 in binary?
01100101
00110101
00011011
01010101
Convert A7 from hexadecimal to denary
176
26
122
167
What is 0101 + 0110 ?
1011
0111
1101
1110
One sample of a sound wave is a binary number that represents ...
... the frequency of the wave.
... the amplitude of the wave.
... a short sound for data compression.
... one cycle of the wave.
Decompress this run-length encoded sequence:
102130
123
000110
011000
010203
A = 1 B = 1 C = 0
What is the final output Y?
0
1
2
3
Select three operating system responsibilities.
Error Handling
Word Processing
File Management
Memory Management
Compiling Code
In a Von Neumann architecture ...
data and instructions are both stored in main memory.
data and instructions are stored in separate memory devices.
data is stored in main memory, instructions in secondary storage.
data is stored in secondary storage, instructions in main memory.
Select three valid parts of the CPU.
Memory Unit
Control Unit
ROM
Arithmetic Logic Unit
RAM
Which secondary device has the lowest latency?
Optical Disk
SSD
Magnetic Hard Drive
Cloud Storage
Select the best description of an embedded system
A general purpose computing system, traditionally with more ROM than RAM.
A computing system with a specific purpose, traditionally with more RAM than ROM.
A computing system with a specific purpose, traditionally with more ROM than RAM.
A general purpose computing system, traditionally with more RAM than ROM.
Which network device forwards data packets between networks?
Router
Client
Server
Modem
Which component holds a MAC address?
Network Interface Card
Router
Macbook
Switch
What is an advantage of this star network topology
If the central switch breaks it will still work.
The speed of the network remains high as more devices are added.
It does not require much cabling.
Each device is able to communicate with all other devices.
What is an advantage of this ring network topology
If the central switch breaks it will still work.
The speed of the network remains high as more devices are added.
It does not require much cabling.
Each device is able to communicate with all other devices.
Select two protocols that might be used in the Transport layer.
HTTPS
TCP
IP
UDP
SMTP
A piece of malware is distributed to disrupt a school network by a rival teacher. Which is the most relevant piece of legislation?
Data Protection Act 1998
Computer Misuse Act 1990
Copyright, Design & Patents Act 1988
Electronics Communication Act 2000
Validation codes to download a game (RRP £50) without cost are illegally generated and distributed. Which is the most relevant piece of legislation?
Data Protection Act 1998
Computer Misuse Act 1990
Copyright, Design & Patents Act 1988
Electronics Communication Act 2000
A teacher accidentally emails a file with all of their students' exam grades and data to a non-work friend. Which is the most relevant piece of legislation?
Data Protection Act 1998
Computer Misuse Act 1990
Copyright, Design & Patents Act 1988
Electronics Communication Act 2000
Select two valid ethical considerations for cloud storage.
Environmental: Storing and retrieving data on the cloud uses energy.
Robustness: Your data might get lost on the cloud
Cost: Cloud storage might require a monthly subscription cost
Privacy: You have less control over where your data is stored.
