Networks and their uses

By Harry Munro-Clark

IP addressing

•Also known as an "IP number" or simply an "IP," this is a code made up of numbers separated by three dots that identifies a particular computer on the Internet. Numbers from 0-255

•The IP address acts as a locator for one IP device to find another and interact with it.

•It is not intended, however, to act as an identifier that always uniquely identifies a particular device.

•In current practice, an IP address is not always a unique identifier, due to technologies such as dynamic assignment and network address translation


MAC addressing

Also known as media access control it translate the IP address from Binary into Hexadecimal code in order to make it more simple to read and comprehend.•A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used for numerous network technologies and most IEEE 802 network technologies, including Ethernet. Logically, MAC addresses are used in the media access control protocol sublayer of the OSI reference model.

Protocol

•A communications protocol is a system of digital message formats and rules for exchanging those messages in or betweencomputing systems and in telecommunications. A protocol may have a formal description. Protocols may include signaling,authentication and error detection and correction capabilities.

Packets

•In computer networking, a packet is a formatted unit of data carried by a packet mode computer network. Computer communications links that do not support packets, such as traditional point-to-point telecommunications links, simply transmit data as a series of bytes, characters, or bits alone. When data is formatted into packets, the bitrate of the communication medium can be better shared among users than if the network were circuit switched.