Physical layout of a network

Star, Ring, Bus

Wireless Personal Area Network

Storage Area Network

Virtual Local Area Network

Peer to Peer

The role in the network, manufacturers of network products to have a common ground on which system to build, interconnecting products

physical, data link, network, transport, session, presentation, application

A protected LAN from outside access, workers to connect to companies internal network from anywhere, more people to work from their homes, remote working also known as telecommuting

The format and the order of messages exchanged between two or more communicating entities.

Anything that is suitable for use with the computer, a small unit of data used in a network communication

ensuring data integrity, manage flow control, prevent deadlock, manage congestion, perform error checking

time of day, distance, provider, cable quality

Encoding information using fewer bits than the original representation

Easier to transmit data across a network due to size or space given or connectivity limitations

Lossy, Lossless, MP3, WAV, ZIP

Security, reliability, cost, speed

uses unlicensed radio spectrum, can be set up without cabling, roaming between access points, cheaper, interference, limited range, health concerns

NIC, radio waves,

OS system, protocol stack, applications

Making sure systems dont get hacked, breaching of information, making sure data is not stolen or leaked

confidentiality, integrity, maintaining accuracy of data, availability, dos attacks

Hybrid of software and hardware that controls incoming and outgoing network traffic, analyses data packets pre-determined by a set of rules

access rights, user groups, id can be stolen, system bypass, intercepting messages

strong encryption, faster computers, easy to guess passwords, encryptions are designed to have backdoors built in