Cambridge (CIE) O Level Computer Science
Exam Questions By Topic

Computers & Binary, Number Systems, Converting Between Binary & Denary, Converting Between Hexadecimal & Denary, Converting Between Hexadecimal & Binary, Uses of Hexadecimal, Binary Addition, Binary Shifts, Two's Complement

Character Sets, Representing Sound, Representing Images

Units of Data Storage, Calculating File Sizes, Compression

Data Packets, Packet Switching, Data Transmission, Universal Serial Bus (USB)

Error Checking, Error Detection Methods, Check Digits, Automatic Repeat Query (ARQ)

Encryption

The CPU & Microprocessors, Von Neumann Architecture, The Fetch-Decode-Execute Cycle, Characteristics of the CPU, CPU Instruction Sets, Embedded Systems

Input Devices, Output Devices, Sensors

Primary Storage, Secondary Storage, Virtual Memory, Cloud Storage

Network Interface Card (NIC), MAC Addresses & IP Addresses, Router

System Software & Application Software, The Purpose & Functionality of Operating Systems, Hardware, Firmware & the Operating System, Interrupts

Levels of Programming Languages, Assembly Language, Translators, Compilers & Interpreters, Tools & Facilities in IDEs

The Internet & the World Wide Web, Network Protocols, Web Browser, Web Pages, Cookies

Digital Currency

Cyber Security Threats, Keeping Data Safe

Automated Systems

Robotics

Artificial Intelligence (AI)

Program Development Life Cycle

Computer Sub-Systems, Problem Decomposition

Designing Algorithms, Explaining Algorithms

Linear Search & Bubble Sort, Other Standard Methods of a Solution

Validation & Verification, Suitable Test Data, Trace Tables

Identifying Errors, Writing & Amending Algorithms

Variables & Constants, Data Types, Input & Output, Sequence, Selection, Iteration, Totalling & Counting, String Handling, Arithmetic, Logical & Boolean Operators, Procedures & Functions, Local & Global Variables, Library Routines, Maintaining Programs

Arrays

File Handling

Single Table Databases, Primary Keys

SQL

Logic Gates, Logic Circuits, Truth Tables, Logic Expressions