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Edexcel GCSE Computer Science (1CP2) Exam Questions

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4 questions · 8 marks

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1Describe2 marksPeripheral Management Swap Remove

A student uses a graphics tablet connected to a computer to draw in a program.

Describe how the operating system passes input from the graphics tablet to the program.

[2 marks]
Mark scheme

Award up to two marks for a linked description such as:

  • The operating system receives signals/data from the graphics tablet (1) and converts them into data the program can use/process (1)
  • The operating system receives data from the graphics tablet (1) and passes/forwards it to the program being used/the active program (1)
  • The tablet's device driver receives/interprets the signals/data from the tablet (1) so the operating system can pass the input to the program (1)
  • The operating system identifies the graphics tablet as the source of the input (1) so the data is sent to the correct program (1)

Accept 'signals' for 'data' throughout.

Accept reference to the device driver only where it is linked to receiving/interpreting the input (e.g. the driver receives the tablet's signals (1) so the OS can pass data to the program (1)).

Do not accept 'the operating system uses a driver' on its own, without saying what the driver does with the input.

Do not accept generic statements such as 'the operating system runs the tablet' as a description of how input is managed.

Do not accept responses that say the operating system creates/finishes the drawing, or that the tablet stores the input permanently.

Example answers and how they were marked
Full marks2/2

The operating system receives signals from the graphics tablet and passes the data to the program.

Why: Receives signals/data from the tablet (1) and passes the data to the active program (1).

Some marks1/2

The operating system receives signals from the graphics tablet.

Why: Gives the first half of a linked description (1): it receives signals, but does not say what happens to the input.

No marks0/2

The operating system uses a device driver to control the graphics tablet and stores the input.

Why: Only says the OS uses a driver to control the tablet and that input is stored; it does not describe the driver receiving/interpreting the input or the input being passed to the program, so no linked point is credited. The mark scheme rejects 'uses a driver' on its own.

2Describe2 marksUser Management Swap Remove

A computer can be used by more than one person.

Describe how an operating system uses access rights to protect each user's files.

[2 marks]
Mark scheme

Award up to two marks for a linked description such as:

  • Each user/file is given permissions/access rights (1) so other users cannot read/write/open/change that user's files (1)
  • A user may be given read-only/read access to a file (1) so they cannot edit/delete/change it (1)
  • Each file is given permissions/access rights for different users (1) so the operating system allows/refuses access depending on which user is logged in (1)
  • The operating system checks a user's permissions/access rights when a file is opened (1) so a user with read-only/read access cannot save/delete changes (1)

Do not accept responses about asking for a password/username, as this checks who the user is, not what they are allowed to do.

Do not accept 'files are protected/safe' or 'access rights protect files' without saying how access is limited (e.g. read-only access, permissions for different users).

Example answers and how they were marked
Full marks2/2

A user can be given read-only access to a file, so they can open it but cannot edit or delete it.

Why: Read-only/read access point (1) and linked development that the user cannot edit/delete the file (1).

Some marks1/2

A user can be given read-only access to a file.

Why: Read-only/read access point (1); no development saying what this prevents, such as being unable to edit/delete the file (0).

No marks0/2

The operating system asks for the password again before the file opens.

Why: Describes asking for a password, which checks who the user is, not access rights to the file; no creditworthy point.

3Explain2 marksProcess Management Swap Remove

A computer has a single CPU.

Explain how the operating system allows a user to run several programs at the same time.

[2 marks]
Mark scheme

Award up to two marks for a linked explanation such as:

  • The operating system switches rapidly between processes (1) so each process runs for a short time slice before the next one starts (1)
  • Each process is given a small amount of CPU time (1) so the CPU moves on to another process when that time is up (1)
  • The operating system chooses which process to run next (1) so the CPU is shared between the programs (1)
  • Processes take turns to use the CPU (1) because the CPU is so fast the user does not notice the switching (1)
  • Only one process can run on the CPU at a time (1) so the operating system must swap processes in and out quickly (1)

For both marks, the expansion must follow/associate with the statement.

Allow 'time slice' / 'time quantum'.

Do not accept 'the computer has more than one CPU' / 'each program runs on its own CPU'.

Do not accept 'the CPU does two things at once' without saying processes take turns/are switched.

Example answers and how they were marked
Full marks2/2

The operating system switches rapidly between processes, giving each one a small time slice, so the CPU is shared and the programs appear to run together.

Why: Linked point (1) and reason (1).

Some marks1/2

Each process is given a small amount of CPU time.

Why: A correct point (1) but no linked reason.

No marks0/2

The computer has two CPUs so each program can run on its own processor.

Why: The scenario states a single CPU, so this misconception earns no credit.

4Explain2 marksSoftware Basics Swap Remove

An operating system manages the files stored on a computer.

Explain one purpose of file management in an operating system.

[2 marks]
Mark scheme

Award up to two marks for a linked explanation such as:

  • Files can be organised into folders/directories (1) so users can find/store files easily (1)
  • Files can be located/opened/saved (1) because the operating system keeps track of where each file is stored (1)
  • Access permissions can be set on files (1) so only allowed users can read/modify them (1)
  • Files can be copied/moved/deleted (1) because the operating system controls where data is written/removed on a storage device (1)
  • Free disk space can be monitored/managed (1) so storage does not run out / files are stored efficiently (1)

For both marks, the expansion must follow/associate with the statement.

Do not accept 'manages files' or 'organises files' on its own as it repeats the question.

Allow 'makes it easier to find files' as the linked reason for organising files into folders.

Example answers and how they were marked
Full marks2/2

File management lets the operating system organise files into folders so that users can find the files they need more easily.

Why: Point (1) for organising files into folders and linked reason (1) for making files easier to find.

Some marks1/2

It organises files into folders.

Why: Point (1) for organising files into folders; no linked reason.

No marks0/2

It manages the files on the computer so the files are managed properly.

Why: Repeats the question; no purpose or linked reason credited.

Questions by topic

2.1 Binary

Build a paper on this topic 58
Adding Binary Numbers 6 questions Binary and Hexadecimal Basics 10 questions Binary Shifts 6 questions Binary to Denary Conversion 6 questions Binary to Hexadecimal Conversion 6 questions Denary to Binary Conversion 6 questions Denary to Hexadecimal Conversion 6 questions Denary to Negative Binary Conversion 6 questions Hexadecimal to Binary Conversion 6 questions

2.2 Data representation

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Character Sets 18 questions Images 19 questions Sound 19 questions

2.3 Data storage and compression

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Compression 18 questions Units & Conversion 6 questions

3.1 Hardware

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Embedded Systems 17 questions Fetch Decode Execute Cycle 15 questions Primary Memory 15 questions Secondary Memory 15 questions Stored Program Computers 15 questions

3.2 Software

Build a paper on this topic 124
File Management 18 questions Memory Management 16 questions Peripheral Management 11 questions Process Management 12 questions Purpose & Function of Operating Systems 17 questions Software Basics 13 questions User Management 18 questions Utility Software 19 questions

3.3 Programming languages

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Low and High Level Languages 19 questions Translators 18 questions

4.1 Networks

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Addressing 16 questions LANs & WANs 16 questions Network Speed 5 questions Packet Switching 16 questions Protocols & Layers 17 questions The Internet 16 questions Topologies 17 questions Wired Connections 17 questions Wireless Connections 18 questions

4.2 Network security

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Network Security Risks 18 questions Preventing Network Security Risks 18 questions

5.1 Environmental

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E-waste 17 questions Manufacturing Technology 19 questions

5.2 Ethical and legal

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Data Protection Act 17 questions Impact of AI 18 questions Intellectual Property 18 questions Software Licences 18 questions

5.3 Cybersecurity

Build a paper on this topic 36
Malware 18 questions Social Engineering 18 questions

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