OCR A Level Computer Science
Exam Questions

Components of the CPU, Fetch-Decode-Execute Cycle, CPU Performance, Pipelining, Von Neumann & Harvard Architecture

CISC vs RISC, Graphics Processing Unit (GPU), Multicore & Parallel Processors

Input, Output & Storage, RAM & ROM

Operating Systems, Memory Management, System Interrupts, Scheduling, Types of Operating System, BIOS, Device Drivers, Virtual Machines

Application Software, Utility Software, Open Source & Closed Source Software, Translators, Stages of Compilation, Libraries, Linkers & Loaders

Waterfall Lifecycle, Agile Programming, Spiral Model, Rapid Application Development (RAD), Comparing Software Development Models

Programming Paradigms, Procedural Programming, Assembly Language & Little Man Computer, Modes of Addressing

Classes (OOP), Objects (OOP), Methods (OOP), Attributes (OOP), Inheritance (OOP), Encapsulation (OOP), Polymorphism (OOP)

Lossy & Lossless Compression, Run Length Encoding & Dictionary Coding, Symmetric vs Asymmetric Encryption, Hashing

Relational Databases, Data Normalisation, Entity Relationship Diagrams, Capturing, Selecting, Managing & Exchanging Data, SQL, Referential Integrity, Transaction Processing

Networks, TCP/IP, Domain Name System (DNS), LAN & WAN, Packet & Circuit Switching, Network Security & Threats, Network Hardware, Client Server & Peer to Peer

Search Engine Indexing, PageRank Algorithm, Server Side & Client Side Processing, HTML, CSS, CSS: Styling, JavaScript, Variables & Constants in JavaScript, Outputs in JavaScript, Selection in JavaScript, For Loops in JavaScript, While Loops in JavaScript, Strings in JavaScript, Operators in JavaScript, Nested Statements in JavaScript, Functions & Procedures in JavaScript

Primitive Data Types, Positive Binary Numbers, Negative Binary Numbers, Binary Addition & Subtraction, Hexadecimal Numbers, Floating Point Binary Numbers, Floating Point Addition & Subtraction, Bitwise Manipulation & Masks, Character Sets

Arrays, Records, Lists & Tuples, Linked Lists, Stacks, Queues, Graphs, Graphs: Traversing, Adding & Removing Data , Trees, Binary Search Trees, Hash Tables

The Data Protection Act 1998, The Computer Misuse Act 1990, The Copyright Design & Patents Act 1988, The Regulation of Investigatory Powers Act 2000

Artificial Intelligence, Censorship & The Internet, Monitoring Behaviour, Analysing Personal Information, Piracy & Offensive Communications, Layout, Colour Paradigms & Character Sets, Computers in the Workforce, Automated Decision Making

The Nature of Abstraction, Abstraction & Reality in Computational Thinking, Abstract Models in Computational Thinking

Computational Thinking: Thinking Ahead

Components of a Problem in Computational Thinking, Order of Steps in Problem Solving, Sub-Procedures

Concurrency in Problem Solving, Concurrent Processing

Data Types, Arithmetic, Logical & Boolean Operators, Programming Constructs, Selection, Iteration, Modularity, Functions & Procedures, Parameter Passing, Recursion, Global & Local Variables, Integrated Development Environment (IDE), Programming Classes, Objects, Methods & Attributes, Programming Inheritance, Programming Encapsulation, Programming Polymorphism

Computational Methods, Problem Recognition, Problem Decomposition, Divide & Conquer Algorithms, Use of Abstraction, Backtracking Algorithms, Heuristics for Problem Solving, Performance Modelling, Pipelining as a Computational Method, Visualisation for Problem Solving

Suitability of Algorithms, Big O Notation, Binary Search, Linear Search, Bubble Sort, Insertion Sort, Merge Sort, Quick Sort, Dijkstra's Shortest Path Algorithm, A* Algorithm

Stacks, Queues, Linked Lists, Trees