Oxford Cambridge and RSA
GCSE (9-1) Computer Science
Computer Systems
J277/01
Topic: Unit 1.2 Virtual Memory
Time allowed: 15 minutes
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INSTRUCTIONS
Use black ink.
Answer all the questions.
INFORMATION
The total mark for this paper is 10.
The marks for each question are shown in brackets [ ].
Turn over
1
Virtual Memory is used when a computer is running many programs at the same time.
(a) State where Virtual Memory is physically located in a computer system.
[1]
(b) Explain when the computer will start using Virtual Memory.
[2]
2
A student is working on a computer with 4GB of RAM. They have a web browser, a word processor, and a music player open.
When they try to open a photo editing application, the computer uses Virtual Memory.
Describe how Virtual Memory works to allow this new application to open.
In your answer, refer to the movement of data.
[3]
3
When the student switches back to the web browser (which was previously moved to Virtual Memory), they notice the computer runs slower than usual.
Explain why using Virtual Memory makes the computer slower.