Different networks and protocol!
Client server network
in a large network it is common to have shared files and resourses on centralised servers. the computers that you use around school are referred to as clients. the advantage of a client server network is that management is centralised and clients are not dependant on other clients just the server. in smaller offices this is not practicle if you run a small company with a handful of computers it is not cost effective to have a specialised server or someone to run the network.
Peer to peer network
A ring network
A star network
A bus network
A local area network (LAN) is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building using network media. The defining characteristics of LANs, in contrast to wide area networks (WANs), include their usually higher data-transfer rates, smaller geographic area, and lack of a need for leased telecommunication lines.
Some NIC cards work with wired connections while others are wireless. Most NICs support either wired Ethernet or WiFi wireless standards. Ethernet NICs plug into the system bus of the PC and include jacks for network cables, while WiFi NICs contain built-in transmitters / receivers (transceivers).
- A computer or computer program that manages access to a centralized resource or service in a network.
A client is a piece of computer hardware or software that accesses a service made available by a server. The server is often (but not always) on another computer systems, in which case the client accesses the service by way of a network.
WHAT IS A NETWORK?
The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web.
FTP stands for File Transfer Protocol. It is used to transfer files across the Internet. FTP is commonly used by web developers to publish updates to a website (i.e. to upload a new version of the website).
Where HTTP is used for displaying the file in your browser, FTP is used simply to transfer the file from one computer to a specified location on another computer. You can use FTP to transfer the files from your computer to a remote computer (such as a web server), or to transfer from the remote computer to your local computer.
Gopher offers downloadable files with some content description to make it easier to find the file you need. The files are arranged on the remote computer in a hierarchical manner, much like the files on your computer's hard drive are arranged. This protocol isn't widely used anymore, but you can still find some operational gopher sites.
You can connect to and use a remote computer program by using the telnet protocol. Generally you would telnet into a specific application housed on a serving computer that would allow you to use that application as if it were on your own computer. Again, using this protocol requires special software.
MAC addresses are 12-digit hexadecimal numbers (48 bits in length).