National 5 - Computer Systems Questions
Answering past paper questions is a great way of gauging how ready you are for the real exam. Below are a collection of all past paper questions from previous years, categorised in line with the course specification.
You should attempt to answer all questions in each section and use the marking instructions to check your own work.
If you find yourself struggling with specific topics, return to the study pages to see where you’re going wrong.
Data representation
Describe how binary is used to represent positive integers
There are currently no past paper questions for this area of knowledge.
Describe floating point representation in terms of the mantissa and exponent
There are currently no past paper questions for this area of knowledge.
Convert from binary to denary
There are currently no past paper questions for this area of knowledge.
Convert from denary to binary
There are currently no past paper questions for this area of knowledge.
Describe how extended ASCII (8-bit) is used to represent characters
There are currently no past paper questions for this area of knowledge.
Describe the vector graphics method of graphic representation
There are currently no past paper questions for this area of knowledge.
Describe the bit-mapped method of graphics representation
There are currently no past paper questions for this area of knowledge.
Computer structure
Describe the purpose of the processor registers
There are currently no past paper questions for this area of knowledge.
Describe the purpose of the processor ALU
There are currently no past paper questions for this area of knowledge.
Describe the purpose of the processor control unit
There are currently no past paper questions for this area of knowledge.
Describe the purpose of memory locations with unique addresses
There are currently no past paper questions for this area of knowledge.
Describe the purpose of the data bus and the address bus
There are currently no past paper questions for this area of knowledge.
Explain the need to translate high level programs into binary machine code
There are currently no past paper questions for this area of knowledge.
Describe how an interpreter translates a high level program into machine code
There are currently no past paper questions for this area of knowledge.
Describe how a compiler translates a high level program into machine code
There are currently no past paper questions for this area of knowledge.
Environmental impact
Describe the energy use of computer systems and the implications on the environment
There are currently no past paper questions for this area of knowledge.
I can describe how the energy use of computer systems could be reduced
There are currently no past paper questions for this area of knowledge.
Security precautions
Describe the role of firewalls
There are currently no past paper questions for this area of knowledge.
Describe the use of encryption in electronic communications
There are currently no past paper questions for this area of knowledge.