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Computer Science

GCSE · AQA

QuestionsFlashcards

Cyber Security Threats
Social Engineering
- What Social Engineering Is
  4
- Blagging, Phishing & Shouldering
  5
Malware
- What Malware Is
  2
- Viruses, Trojans & Spyware
  3
Detecting & Preventing Threats

The 4-Layer TCP/IP Model Flashcards

All 5 cards in this deck

Name the four layers of the TCP/IP model, from top to bottom.: Application, transport, internet and link. Each layer handles a different part of network communication.
What is the main function of the application layer of the TCP/IP model?: It is the top layer, where network applications such as web browsers and email programs operate.
What is the main function of the transport layer of the TCP/IP model?: It sets up communication between the two hosts, which agree settings such as the size of the packets.
What is the main function of the internet layer of the TCP/IP model?: It addresses and packages the data for transmission, and routes the packets across the network.
What operates at the link layer of the TCP/IP model?: The network hardware, such as the network interface card (NIC). The operating system's device drivers for that hardware also operate here.