3. Networking

Syllabus Points Covered

Programming for the web

Data transmission using the web

• Investigate and practise how data is transferred on the internet

  • data packets

  • internet protocol (IP) addresses, including IPv4

  • domain name systems (DNS)

• Investigate and describe the function of web protocols and their ports

  • TCP/IP

  • DNS

  • FTP, SFTP

  • SMTP, POP 3, IMAP

Chapter Contents

• 3.1. Overview
  • 3.1.1. Network Protocols
  • 3.1.2. The TCP/IP Layer Model
  • 3.1.3. Glossary
• 3.2. Internet Layer
  • 3.2.1. Data Packets
  • 3.2.2. Internet Protocol (IP)
  • 3.2.3. Glossary
• 3.3. Transport Layer
  • 3.3.1. Transmission Control Protocol (TCP)
  • 3.3.2. TCP Ports
  • 3.3.3. Glossary
• 3.4. Application Layer
  • 3.4.1. Application Layer and Protocols
  • 3.4.2. FTP (File Transfer Protocol)
  • 3.4.3. Email (SMTP, POP, IMAP)
  • 3.4.4. HTTP (HyperText Transfer Protocol)
  • 3.4.5. DNS (Domain Name System)
  • 3.4.6. Glossary