O Level

1.2.3

Internet Principle of Operation

1.3.2

Computer Architecture and The Fetch Execute Cycle

As LEVEL

1.3.3

Logic gates and logic circuits

1.4.2

The fetch-execute cycle

1.4.3

The processor’s instruction set

1.8.3

 Data Defi nition Language (DDL) and Data Manipulation Language (DML)

2.1.3

 Corrective maintenance

A2 LEVEL

3.1.1

User-defined data types

3.1.2

File organisation and access

3.1.3

Real numbers and normalised floating-point representation

3.2.2

Circuit switching, packet switching and routers

3.5.1

Asymmetric keys and encryption methods

3.5.2

Digital signatures and digital certificates

3.6.1

Overview of monitoring and control systems

4.3.4

Use of development tools / programming environments

4.4.1

Stages of software development

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