IGCSE Computer Science MCQ Revision (Cambridge CIE)
IGCSE Computer Science Multiple Choice Questions
Choose the best answer for each of the following questions.
- What is the largest denary number that can be represented using 8 bits?
- a) 127
- b) 255
- c) 256
- d) 512
- Which of the following is an example of an input device?
- a) Monitor
- b) Printer
- c) Speaker
- d) Microphone
- What does RAM stand for?
- a) Read Access Memory
- b) Random Access Mainframe
- c) Random Access Memory
- d) Readily Available Memory
- Which type of data transmission sends data one bit at a time over a single channel?
- a) Parallel
- b) Serial
- c) Simplex
- d) Duplex
- What is the primary function of an Operating System?
- a) To run application software only
- b) To manage hardware and software resources
- c) To connect to the internet
- d) To create documents
- Which security measure involves scrambling data to make it unreadable without a key?
- a) Firewall
- b) Authentication
- c) Encryption
- d) Backup
- What is a 'field' in a database context?
- a) A collection of records
- b) A single piece of data for a specific category
- c) An entire row of data
- d) A link between tables
- Which logic gate outputs TRUE only if both inputs are TRUE?
- a) OR
- b) NOT
- c) XOR
- d) AND
- Which network topology connects all devices to a central hub or switch?
- a) Bus
- b) Ring
- c) Star
- d) Mesh
- What is the purpose of a URL?
- a) To identify a specific computer on a network
- b) To locate a resource on the internet
- c) To encrypt web traffic
- d) To store user preferences
- Which type of software is designed to perform a specific task for the user (e.g., word processor)?
- a) System software
- b) Utility software
- c) Application software
- d) Operating system
- What does 'secondary storage' refer to?
- a) RAM
- b) Cache memory
- c) Hard Disk Drive
- d) CPU registers
- Which of the following is typically stored in ROM?
- a) User documents
- b) The operating system currently in use
- c) The bootstrap loader
- d) Web browser history
- What is a common method for checking for errors during data transmission?
- a) Compression
- b) Parity check
- c) Encryption
- d) Defragmentation
- Which programming construct allows a section of code to be executed repeatedly?
- a) Selection
- b) Sequence
- c) Iteration
- d) Declaration
- What is the standard character encoding scheme used for representing text in computers?
- a) JPEG
- b) MP3
- c) ASCII
- d) GIF
- A small, malicious program that attaches itself to legitimate programs and spreads to other computers is known as a:
- a) Worm
- b) Trojan horse
- c) Virus
- d) Spyware
- Which component of the CPU carries out arithmetic and logic operations?
- a) Control Unit (CU)
- b) Registers
- c) Arithmetic Logic Unit (ALU)
- d) Cache
- What is the term for a unique identifier for a record in a database?
- a) Foreign key
- b) Candidate key
- c) Primary key
- d) Index key
- Which statement about a Local Area Network (LAN) is generally true?
- a) It covers a large geographical area
- b) It uses public telecommunication links
- c) It connects devices within a limited area, like a home or office
- d) It is always slower than a Wide Area Network (WAN)
Answer Key
- b) 255
- d) Microphone
- c) Random Access Memory
- b) Serial
- b) To manage hardware and software resources
- c) Encryption
- b) A single piece of data for a specific category
- d) AND
- c) Star
- b) To locate a resource on the internet
- c) Application software
- c) Hard Disk Drive
- c) The bootstrap loader
- b) Parity check
- c) Iteration
- c) ASCII
- c) Virus
- c) Arithmetic Logic Unit (ALU)
- c) Primary key
- c) It connects devices within a limited area, like a home or office
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