Edexcel GCSE Computer Science (1CP2) Exam Questions

• A Desktop computer (1)
• The only correct answer is A. The correct answer is Desktop computer.
• B is not correct because a microwave oven uses an embedded system, built into it, to control a dedicated function
• C is not correct because a washing machine uses an embedded system, built into it, to control a dedicated function
• D is not correct because a traffic light uses an embedded system, built into it, to control a dedicated function

Indicative content

How files and folders are organised

• The operating system creates a folder structure, so the business can keep each client's or event's photographs together.
• The operating system allocates each image file to a folder and records its file path, so the image can be located again.
• The operating system can move, copy and delete files and folders, so staff can remove unwanted images and keep the disk tidy.
• The operating system records file attributes such as size, type and date, so staff can sort and identify images.
• A folder structure that is not used consistently can make images slow to find, because files may be saved in the wrong client folder.

How files are named and saved

• The operating system lets an employee choose a file name and extension, so an image can be identified and opened by the correct application.
• The operating system saves a file to the folder the employee chooses, so a new image is stored with the correct client.
• The operating system checks whether a file with the same name already exists and warns the employee before it is overwritten, so original photographs are not lost.
• The operating system stores the file path with the file, so the business can retrieve the image later.
• If employees choose inconsistent file names, images can be difficult to identify when the business needs them.

How access to files is controlled for the employees

• The operating system stores user accounts and passwords, so each employee must log in before opening client images.
• The operating system sets access rights, so some employees can view images but not edit or delete them, which protects original photographs.
• An administrator account can change access rights, so the business can decide who may delete or edit client files.
• If employees share passwords, access rights are not effective, so images could be changed or deleted by the wrong person.
• If access rights are too restrictive, employees may be unable to do their work, so the business must set them carefully.

Levels

• Level 0 (0 marks): No rewardable content.
• Level 1 (1–2 marks): Basic, independent points are made, showing elements of understanding of key concepts/principles of computer science. (AO1) The discussion will contain basic information with little linkage between points made or application to the context. (AO2)
• Level 2 (3–4 marks): Demonstrates adequate understanding of key concepts/principles of computer science. (AO1) The discussion shows some linkages and lines of reasoning with some structure and application to the context. (AO2)
• Level 3 (5–6 marks): Demonstrates comprehensive understanding of key concepts/principles of computer science to support the discussion being presented. (AO1) The discussion is well developed, with sustained lines of reasoning that are coherent and logically structured, and which clearly apply to the context. (AO2)

Additional guidance

• Accept file extensions, file paths, file attributes, directory/folder structure, read-only access, read/write access, administrator and user accounts. Do not accept 'the OS controls/organises files' without a named task, or memory management, process management or peripheral management as file management.
• Level 3 responses must cover all three bullets, with at least one benefit or drawback applied to the business and a judgement. A list of features with no application is limited to Level 1; Level 2 requires at least two bullets covered with some linkage to the business.

Indicative content

Ease of learning, use and debug

• High-level language statements are written in English-like words and mathematical symbols, so the students can read the quiz game code and understand what each line does.
• The language is easier to learn than a low-level language, so students who are new to programming can start writing the quiz game quickly.
• Errors are easier to find and fix because the code is readable; for example, the students can check a line that updates a score against the rule they intended.
• The students do not need to know how the processor carries out each statement, so they can concentrate on the quiz questions and rules.

Data structures

• High-level languages provide lists or arrays, so the names and scores of all the players can be stored under one name and processed with a loop.
• A record can store a player's name and score as one item; in some languages a dictionary or class can be used instead, which keeps related data together.
• Using a data structure makes the code shorter and easier to understand than separate variables for every player's name and score.

Built-in functions and library routines

• High-level languages provide built-in functions such as print and input, so the students can display a question and read a player's answer without writing the underlying code.
• Library routines such as a random number generator can be used to choose quiz questions, saving the students time.
• String-handling routines can check or compare a player's answer, so the students do not have to write these routines themselves.
• Reusing tested routines reduces the amount of code the students write and can reduce errors in the quiz game.

Levels

• Level 0 (0 marks): No rewardable content.
• Level 1 (1–2 marks): Basic, independent points are made, showing elements of understanding of key concepts/principles of computer science. (AO1) The discussion will contain basic information with little linkage between points made or application to the context. (AO2)
• Level 2 (3–4 marks): Demonstrates adequate understanding of key concepts/principles of computer science. (AO1) The discussion shows some linkages and lines of reasoning with some structure and application to the context. (AO2)
• Level 3 (5–6 marks): Demonstrates comprehensive understanding of key concepts/principles of computer science to support the discussion being presented. (AO1) The discussion is well developed, with sustained lines of reasoning that are coherent and logically structured, and which clearly apply to the context. (AO2)

Additional guidance: Credit only points applied to the quiz game and the students; comparison with low-level languages is not required, but a correct contrast may support a point if it is applied. Do not award generic claims such as 'high-level programs run faster', 'work on any computer' or 'students do not need to learn syntax' unless they are justified for the quiz game.

Level 3 responses must cover all three bullet areas with linked reasoning that explains why the characteristic helps the students finish the game quickly with few errors; an answer covering only two bullet areas is limited to Level 2. Do not award the idea that high-level code is already machine code or is understood directly by the processor. Accept dictionaries or classes as equivalents of records.