1.3.3 Networks - Protocols and Internet Structure

A collection of computers / computing devices on the same network which are physically close together, for example, all located within one building or site e.g. a home or school network.

A collection of computers / computing devices on the same network which are spread out over a geographically large area, for example a university across several campuses, or a multinational corporation with offices / sites in different cities or even different countries

Which of the following are a type of network topology?

• Star

• client-server

• Ring

• Mesh

• peer-to-peer

TCP/IP layer responsible with the production, communication and reception of data.

• Application

• Transport

• Network

• Link

TCP/IP layer which breaks the application data down into packets. Sequence numbers are allocated, and source and destination port numbers are added to the header.

• Application

• Transport

• Network

• Link

TCP/IP layer that prepares packets for the internet. Source and destination IP addresses are added at this stage.

• Application

• Transport

• Network

• Link

The bottom layer of the TCP/IP stack responsible for transmitting the packets over a physical medium.

• Application

• Transport

• Network

• Link

The rules and standards governing how networks should function and communicate.

Uses fixed physical links to connect devices

• Packet Switching

• Circuit Switching

Which of the following apply to packet switching networks?

(Select All that Apply)

• packets can be sent by different routes

• data is broken down into small packets

• packets are given a sequence number

• nodes are physically connected

• typically used on the Internet