Fundamentals of Communication and Networking - AQA Computer Science A level 4.9 notes

Comprehensive notes on all of communication and networking, for the AQA syllabus. Includes notes on:

4.9.1 Communication

• Communication Basics
• Serial and Parallel Data Transmission
• The Advantages of Serial over Parallel
• Synchronous and Asynchronous data transmission

4.9.2 Networking

• Network Topology
• Physical Network Topology
• Physical Star Network Topology
• Physical Bus Topology
• Logical Network Topology
• Mixing Topologies
• Types of Networking Between Hosts
• Client-Server Networking
• Peer-to-Peer Networking
• Wireless networking
• Wifi
• Carrier Sense Multiple Access Collision Avoidance

4.9.3 The Internet

• The Structure of the Internet
• Internet Service Providers
• Packet Switching and Routers
• The Primary Components of a Packet
• Routers and Gateways
• Uniform Resource Locators
• Domain Names
• Fully Qualified Domain Names
• IP Addresses
• The Domain Name Server (DNS) System
• Internet Security
• Firewalls
• Packet Filtering
• Stateful Inspection
• Proxy Server
• Symmetric & Asymmetric Encryption
• Digital Certificates & Digital Signatures
• Worms, Trojans & Viruses
• Preventing Malware

4.9.4 The Transmission Control Protocol & Internet

• Protocol (TCP/IP)
• TCP / IP
• Application Layer
• Transport Layer
• Network Layer
• Link Layer
• Socket Addresses
• Well-Known Ports
• The Structure of IP Addresses
• IP Address Standards
• IPv4
• IPv6
• Public and Private IP Addresses
• Dynamic Host Configuration Protocol (DHCP)
• Network Address Translation (NAT)