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Edexcel GCSE Computer Science (1CP2) Exam Questions

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2 questions · 4 marks

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1Short recall2 marksMemory Management Swap Remove

The operating system keeps a record of where each program and its data are stored in main memory.

State two reasons why the operating system needs this record.

[2 marks]
Mark scheme

Award one mark for any of the following up to a maximum of two marks:

  • So that it does not overwrite/use memory that is already being used by another program (1)
  • So that it can find the program/data again when the program needs it (1)
  • So that it knows which memory locations are free/can be allocated to a new program (1)
  • So that it can keep the data used by each program separate from other programs (1)
  • So that it can free the memory when the program is closed/knows which memory to release (1)

Do not accept 'so the program runs faster'.

Do not accept 'so that the program is not lost when the power is turned off' (this is about saving files to secondary storage, not main memory).

Example answers and how they were marked
Full marks2/2

So that the operating system does not put a new program on top of memory that another program is already using, and so that it can find the data again when the program needs it.

Why: Creditworthy point 'does not overwrite memory used by another program' (1) and 'find the program/data again when needed' (1).

Some marks1/2

It knows where the program is so it can find it again when it needs to run it.

Why: Creditworthy point 'find the program/data again when it is needed' (1); no second reason given.

No marks0/2

So that the program is not lost when the computer is switched off.

Why: This is about saving to secondary storage, not about a record of main memory locations; not a creditworthy reason, so no marks.

2Short recall2 marksUser Management Swap Remove

A computer can be shared by more than one user.

Define the term user management.

[2 marks]
Mark scheme

Award one mark for any of the following up to a maximum of two marks:

  • Manages user accounts/profiles/logins (1)
  • Authenticates users when they log in (through passwords/biometrics) (1)
  • Controls what each user is allowed to access (access rights/permissions) (1)
  • Sets which files/folders/resources a user can use (1)
  • Gives different levels of access to different users (e.g. administrator/standard user) (1)

Allow 'decides which users can use the computer' for the manage user accounts/logins mark.

Allow references to access to files/folders/resources for the access rights mark, as this is part of user management, not file management.

Do not accept 'manages users' on its own.

Do not accept 'controls user access' on its own, as it is unclear whether this means logging in or access rights.

Do not accept 'manages files' or 'manages peripherals' (these are other operating system functions).

Example answers and how they were marked
Full marks2/2

The operating system manages user accounts and logins, and sets access rights so each user can only use certain files and resources.

Why: Manages user accounts/logins (1) and controls what each user is allowed to access through access rights (1).

Some marks1/2

It manages the users who can log in to the computer.

Why: Manages user logins (1); no creditworthy point about access rights/permissions.

No marks0/2

It manages the files and peripherals for different users.

Why: File management and peripheral management are other operating system functions, so neither mark is earned.

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