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GCSE Computer Science/Paper 1/Wired and wireless networks, protocols and layers

TCP/IP (Transmission Control Protocol/Internet Protocol)

Common protocols: TCP/IP (Transmission Control Protocol/Internet Protocol)

1.3.2 Wired and wireless networks, protocols and layers

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Wired and wireless networks, protocols and layers — Note 6 of 13

What you need to know

TCP/IP (Transmission Control Protocol / Internet Protocol) is the fundamental protocol suite that powers the Internet. TCP handles reliable data delivery; IP handles addressing and routing.

What to know

  • TCP and IP work together: IP handles the addressing/routing, TCP handles the reliable delivery.

Key terms

TCPTransmission Control Protocol

Breaks data into packets, ensures all packets arrive completely and in the correct order, and requests re-sending of any missing packets.

IPInternet Protocol

Responsible for addressing and routing data packets across networks using IP addresses, ensuring they reach the correct destination.

Exam technique

  • Tip:TCP ensures data arrives COMPLETELY and in the CORRECT ORDER. IP ensures data is ROUTED to the correct DESTINATION.

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Revise another OCR GCSE topic: Networks and topologies

Wired and wireless networks, protocols and layers

Note 6 of 13

  1. 1Wired - Ethernet; Wireless - Wi-Fi, Bluetooth;
  2. 2Encryption
  3. 3IP addressing and MAC addressing
  4. 4Standards
  5. 5Common protocols
  6. 6TCP/IP (Transmission Control Protocol/Internet Protocol)
  7. 7HTTP (Hyper Text Transfer Protocol)
  8. 8HTTPS (Hyper Text Transfer Protocol Secure)
  9. 9FTP (File Transfer Protocol)
  10. 10POP (Post Office Protocol)
  11. 11IMAP (Internet Message Access Protocol)
  12. 12SMTP (Simple Mail Transfer Protocol)
  13. 13The concept of layers
Topic overview

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