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Understanding Computer Networks: Types, Benefits, and Components

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nanji
13 diapositives · 288 Views · Aug 04, 2014

A computer network comprises interconnected devices that facilitate data sharing and resource access, enhancing connectivity and efficiency. This includes servers that manage shared services and local area networks (LANs) that operate within limited geographical regions like homes or offices. Other types include wide area networks (WANs) and standalone servers that function independently. Discover the advantages and disadvantages of different networking setups, such as easy resource sharing and maintenance challenges, and gain insights into various connection types like twisted pair and fiber optics.

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  1. Network

  2. Network • A computer network is a group of more computers connected 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 devices such as: Printer. Some basic types of computer networks include: A local area network, An "internetwork“.

  3. 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, including authentication. These devices can be such as a fax which does not need any server to have a control.

  4. 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.

  5. LAN (Local Area Network) Advantages 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 accessing into programs and data which is restricted. It is difficult to setup and needs maintenance regularly • Easy to share devices, such as (printers, scanners, external drivers) • Easy to share data (homework, picture) • When a new version is introduced, it only has to be loaded onto the server instead of onto every workstation • Cost of LAN setup is low

  6. Cable LAN (Local Area Network) & Types • Cable LAN are used to connect one network device to other or to connect two or more computers 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 offices • Coaxial cable – uses electromagnetic waves inside 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.

  7. Router • A router enables to transmit data such as internet between the computer networks.

  8. WAN (Wide Area Netork) • WANs cover a wide geographical area. This can link computers in different countries using satellites, microwaves or telecommunication links.

  9. Client • A client is an application or system that accesses a service made available by a server.

  10. 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. Services are used by other computers that are called clients. The relationship between the client and the server is called a client-server relationship.

  11. Client/Network Server • A network client/server is a computer that provides various shared resources to workstations and other servers on a computer network. • The shared resources can include disk space, hardware access, and email services.

  12. Peer to Peer Network • In its simplest form, a peer-to-peer (P2P) network is created when two or more PCs are connected and share resources without going through a separate server computer. • A P2P network can be an ad hoc connection—a couple of computers connected via a Universal Serial Bus to transfer files.

  13. 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