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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 marksSoftware Basics Swap Remove

Every computer system needs an operating system.

State two functions of an operating system.

[2 marks]
Mark scheme

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

  • File management (1)
  • Process management (1)
  • Peripheral management (1)
  • User management (1)

Allow 'managing files', 'managing processes', 'managing peripherals', 'managing users'.

Do not accept examples of utility software, such as anti-malware, backup or defragmentation, as these are not functions of the operating system.

Do not accept 'runs/loads the programs' on its own.

Example answers and how they were marked
Full marks2/2

File management and process management.

Why: Two creditworthy functions from the list, one mark each (1) + (1).

Some marks1/2

It does file management and it loads the programs that the user wants to run.

Why: File management earns one mark (1); 'loads the programs' is not one of the listed functions, so no second mark.

No marks0/2

Anti-malware and backup.

Why: These are examples of utility software, not functions of the operating system, so no mark is awarded.

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