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Edexcel GCSE Computer Science, Topic 4: Networks Exam Questions And Answers Already Passed LAN - local area network A network of computers within the same building, such as a school, home or business. It is not necessarily connected to the internet. WAN - wide area network When LANs are connected. Can connect organisations based in different geographical places. The internet is an example of this. Network topologies: bus Each computer and network device are connected to a single cable ...

Edexcel GCSE Computer science key questions And UPDATED ANSWERS Process for communication in the client-server network model. 1. The client uses the address of the server to make a connection. 2. The client sends a request to the server. 3. The server obtains the address from the client once the client makes a connection to the server. 4. The server sends the requested data to the client. Benefits of using subprograms when writing software solutions 1. Are written only once. 2....

GCSE Edexcel Computer Science Exam Questions With Complete Solutions Graded A++ Explain how binary is used to represent data (numbers, text, sound, graphics) and program instructions binary is used to represent all elements in a computer It is stored as a series of 0s and 1s These relate to the position of transistors (on or off) All analogue data stored is converted into digital (binary) Explain the difference between unsigned and signed integers An unsigned integer can only represen...

GCSE Edexcel Computer Science Exam Questions And Complete Solutions 1. Explain how binary is used to represent data (numbers, text, sound, graphics) and program instructions binary is used to represent all elements in a computer It is stored as a series of 0s and 1s These relate to the position of transistors (on or off) All analogue data stored is converted into digital (binary) 2 Explain the difference between unsigned and signed integers An unsigned integer can only represent positive...

Edexcel GCSE Computer Science, Unit 3: Computers Exam Questions And Answers With Complete Solutions Updated von Neumann architecture Computer design where processing instructions are stored in memory; the stored program concept Central Processing Unit (CPU) Hardware that carries out the computer's processing Bus Group of connections between devices in a computer ALU Arithmetic / logic unit: part of the CPU that performs calculations and logic operations Register Storage location ins...

Computer Science Edexcel GCSE Exam Questions With Verified Correct Answers Graded A++ What is a data structure? An organised collection of related elements What is an array? an object used to store multiple values of the same data type in a single variable. What is a record? A data strutcure that stores a set of related elements of different data types. Each element in a record is known as a field. What is a field? An element in a record. REMINDER Learn python formatting What is d...

Edexcel GCSE Computer Science Exam 2024 Updated Questions And Complete Answers What is a character? A letter,number or symbol on a given character set What is a string? A sequence of characters What is casting? Changing the data type of a variable What is a count-controlled loop? A loop that repeats a specific number of times (FOR loops) What is a condition controlled loop? A loop that runs until a condition is met (WHILE loops) When would you use a variable? When a value might n...

Edexcel GCSE Computer Science, Unit 1: Computational Thinking Exam Questions And Complete Answers Updated Algorithm Set of step-by-step instructions to complete a task, or solve a problem Decomposition Break down a problem into smaller sub-problems Abstraction Remove unnecessary information from a problem Pattern recognition Seeing similarities and differences in a range of problems Computational thinking Using methods to solve complex problems Flowchart Diagram that represents a...

Edexcel GCSE Computer Science Glossary Exam Questions And Complete Answers Compiler Translates the whole program into machine code at once before the program is run. 1. Code executes quickly (as already translated). 2. Slower to find errors (as all code must be translated). Interpreter Translates source code into machine code, line by line when the program is run. 1. Code can run on different platforms/devices (as it's translated on the platform running the program). 2. Source c...

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