NET-

WORK

Network• A computer network is a group of more computers con-

nected to each electronically, consisting in a server. • This allows files easily to be shared. Usually, this means

that the speed of the connection is faster than a normal connection to the Internet. Also can share hardware de-vices such as: Printer. Some basic types of computer networks include: A local area network, An "internetwork“.

Standalone• A Standalone server is a type of server that is not part of a

larger network infrastructure such as an Active Directory domain.

• In a general sense, a standalone server provides services to clients without relying on any external resources, includ-ing authentication. These devices can be such as a fax which does not need any server to have a control.

LAN (Local Area Network)• LANs are confined to a small area, like within a building or

several, it’s messages are sent between terminals and this is very useful for sending memos between offices.

• LAN can be used in schools, home offices etc.

LAN (Local Area Network)

Advantages

• Easy to share devices, such as (printers, scanners, ex-ternal drivers)

• Easy to share data (home-work, picture)

• When a new version is intro-duced, it only has to be loaded onto the server in-stead of onto every worksta-tion

• Cost of LAN setup is low

Disadvantages

• Regional area coverage is limited

• When a file developed a fault, all the users in a server will be affected.

• Special security program is needed to prevent users ac-cessing into programs and data which is restricted.

• It is difficult to setup and needs maintenance regularly

Cable LAN (Local Area Network) & Types• Cable LAN are used to connect one network

device to other or to connect two or more com-puters to share devices such as printer, scanner etc.

• Types of cabled LANs:• Twisted pair – a form of wiring which a twisted

conductors are used and used in homes and of-fices

• Coaxial cable – uses electromagnetic waves in-side the cable and is used for TV

• Optical fiber – the latest form cable LAN of transferring light pulses that is provided by the ISPs which is made out of very thin material of glass.

Router• A router enables to transmit data such as internet be-

tween the computer networks.

WAN (Wide Area Netork)• WANs cover a wide geographical area. This can link com-

puters in different countries using satellites, microwaves or telecommunication links.

Client• A client is an application or system that accesses a ser-

vice made available by a server.

Server• A server is a computer that serves many things to user,

or client machines. Usually a server will only do a few things.

• Every type of thing a server does is called a service. Ser-vices are used by other computers that are called clients. The relationship between the client and the server is called a client-server relationship.

Client/Network Server• A network client/server is a computer that provides vari-

ous shared resources to workstations and other servers on a computer network.

• The shared resources can include disk space, hardware access, and email services.

Peer to Peer Network• In its simplest form, a peer-to-peer (P2P) network is cre-

ated when two or more PCs are connected and share re-sources without going through a separate server com-puter.

• A P2P network can be an ad hoc connection—a couple of computers connected via a Universal Serial Bus to trans-fer files.

Bibligraphy• http://

answers.yahoo.com/question/index?qid=20080914004237AAlPZXT

• http://en.wikipedia.org/wiki/Client_(computing)• http://en.wikipedia.org/wiki/Peer-to-peer• http://

compnetworking.about.com/od/basicnetworkingfaqs/a/client-server.htm

• http://en.wikipedia.org/wiki/Server_(computing)• http://en.wikipedia.org/wiki/Wide_area_network• http://en.wikipedia.org/wiki/Local_area_network• http://en.wikipedia.org/wiki/Standalone_server• http://en.wikipedia.org/wiki/Computer_network