Network+ N10-009 Layer 2 (Data-Link)

Operating System Theory and Structures

This deck covers key concepts of operating systems, including their functions, structures, services, and design methodologies. It explores the components, system calls, and different architectural approaches to OS design.

Operating System Typologies and Architectures

This deck covers the typologies of operating systems, focusing on mono-processor and multi-processor systems, including clustered and real-time embedded systems.

A Level Computer Science Paper 1: 1.3.4 Web Technologies Part 2

Web indexing involves recording and organizing information about online resources. Web crawlers automatically scan and catalogue web pages, while meta tags within HTML help describe page content to improve search visibility.

A Level Computer Science Paper 1: 1.3.4 Web Technologies

HTML is the standard language used to build and structure web pages. It uses tagged elements to define content, with headers indicating importance and paragraphs used to separate blocks of text.

A Level Computer Science Paper 1: 1.3.2 Databases Part 2

Normalisation is the process of structuring a database to reduce redundancy and improve data integrity. It involves organizing data into tables that meet specific rules—starting with First Normal Form (1NF) and Second Normal Form (2NF)—to ensure each field depends fully on the primary key and that data is stored efficiently.

A Level Computer Science Paper 1: 1.3.2 Databases

A database is an organised system for storing and managing data efficiently. It ensures data accuracy, accessibility, and security, with information structured in tables containing fields that define specific data attributes.