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)












