• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

What is a network?

Extracts from this document...

Introduction

1) What is a "network"? A network is several computer systems linked together so that facilities such as printers, storage, computer programs, etc. can be shared. 2) What is "local area network" (LAN)? A local area network (LAN) is a group of computers linked together over one small geographical area, usually one building, an office in a building, or across a several buildings on one site. 3) What are "dumb terminals"? Dumb terminals are display and input devices which don't process data and input locally, instead transmitting input to a computer to which it is connected and displaying the resulting output. 4) What is a "server" and what does it do? The file server provides central disk storage for the users of a network. It identifies each user's file separately, and will not allow another user to access them. 5) What is a "web server"? A web server is a computer connected to the Internet. ...read more.

Middle

What is the "internet"? What did it used to be? The Internet is the world's largest wide area network and is often referred to as the network of networks. 10) What is the "world wide web" (www)? The world wide web is a part of the internet where a set of multimedia documents (documents that can consist of words, sound, video, images or animation) are connected by way of hyperlinks so you can move from one document to another with a mouse click. 11) What computer language are web pages written in? A webpage is written using HTML (hypertext markup language). 12) Connecting to the internet - what type of hardware device is a "modem" and what does it do? A modem converts the digital signals from a computer into analogue signals that can be sent down a phone line. These analogue signals are then converted back to digital signals by a modem at the receiving end. ...read more.

Conclusion

* You can create an address book of the e-mail addresses of all your friends. * You can create a distribution list. * You can send attachments of any file your computer. * If you want to attach a confidential file, you can add password to the file for security. * You can send copies of a message to many people. * You can forward e-mail you have received to other users. * Messages are automatically date and time stamped. * You can add a different signature to an e-mail, depending on the recipient. 18) List three other ways of accessing the internet. Mobile Phones; Personal Digital Assistants (PDA); Internet TVs or Set Top Boxes; Multimedia Kiosks. 19) What factors affect data transfer speeds when we are accessing the internet? The speed of your modem or the modem at the other end of the communication line; Your phone line; The size of the file being transferred; The amount of memory on your PC; The number of users online at the same time; The site you are visiting may be very busy; The amount of bandwidth available. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Communications section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Communications essays

  1. ICT Systems in Everyday Life: Your Local Community

    This includes the cost of the film in addition to processing. This figure is widely used as what studios and distributors will save under digital cinema. As we will later show, there is not likely to be any savings after the cost of capital is taken into account based on the current cost of projection systems.

  2. Free essay

    Impact of ICT in Community

    If users change the software he will find many difficulties because the software is different. 7. Alternative technology The alternative technology for Hal can be a newer version which will have a lot more features than the old one. There are also other latest versions of HAL Screen Reader available which have other languages for e.g.

  1. Information Security.

    invades others' computers, inspecting or tampering with the programs or data stored on them. (More accurately, though, such a person would be called a "cracker.") Hacker also means someone who, beyond mere programming, likes to take apart operating systems and programs to see what makes them tick.

  2. Unit 23: Investigating Communications and Networks

    susceptible to EMI than other types of copper media Difficult to work with; limited bandwidth; limited application; damage to cable can bring down entire network Fibre optic 3km and further (single node) 2km and further (multimode) 10Mbps/1000Mbps (single node) 100Mbps/9.92Gbps (multimode)

  1. Computer Networks and Distributed Systems - Wireless network of devices: General packet radio services ...

    telnet, will be as available over the mobile network because of GPRS. The World Wide Web is becoming the primary communications interface; people access the Internet for entertainment and information collection, the intranet however is for accessing company information and connecting with colleagues and the extranet is for accessing customers and suppliers.

  2. OCR GCSE Business & Communication Task 7 Report

    Microsoft Outlook allows me to professionally set up a suitable email for my client whom is applicable and easy to use or manage. This programme protects me against unwanted junk mail or viruses by using an Anti-Virus Checker. A virus is a purpose built file which can interrupt files and move, delete or edit work when sent.

  1. Networks LAN = Local Area Network.

    Network Topologies. Star, Bus and Ring Star Each workstation has its own direct line to the server. Connections to the server are made with hubs or switches. Hubs connect many lines together. Switches allow the network manager to connect certain workstations to specific servers.

  2. Distinguish between analogue and digital signaling and describe the role of a modem in ...

    The downside of digital is that while it offers better clarity, analogue gives you richer quality. Like any new technology, digital has a few shortcomings. Since devices are constantly translating, coding, and reassembling your voice, you won't get the same rich sound quality as you do with analogue.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work