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Networks Mr Arthur
Aims of Lesson 1 <ul><li>What is a Stand Alone Computer System? </li></ul><ul><li>What is a Network? </li></ul><ul><li>Loc...
Stand Alone/Networked <ul><li>A  Stand Alone  computer system is a computer that is not connected to any other </li></ul><...
Local Area Networks <ul><li>A LAN is a network of computers connected over a small geographical area, usually inside the 1...
Wide Area Networks <ul><li>A WAN is a network of computers over a large geographical area, such as across a country or the...
Advantages of Networks <ul><li>You can share hardware therefore saving money </li></ul><ul><li>They allow you to communica...
Aims of Lesson 2 <ul><li>Last Lesson </li></ul><ul><li>What is a Stand Alone Computer System? </li></ul><ul><li>What is a ...
Network Security <ul><li>Passwords = Users have passwords to keep their data secure and prevent unwanted tampering with da...
Client/Server Networks <ul><li>Client/Server Networks </li></ul><ul><ul><li>Where there are many clients that access files...
Networks = What you need to know! <ul><li>What is a Stand Alone Computer System? </li></ul><ul><li>What is a Network? </li...
Network Powerpoint <ul><li>Slide 1 = Covering Slide </li></ul><ul><li>Slide 2 = Standalone/Network definitition </li></ul>...
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Networking slides

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Transcript of "Networking slides"

  1. 1. Networks Mr Arthur
  2. 2. Aims of Lesson 1 <ul><li>What is a Stand Alone Computer System? </li></ul><ul><li>What is a Network? </li></ul><ul><li>Local Area Networks </li></ul><ul><li>Wide Area Networks </li></ul>
  3. 3. Stand Alone/Networked <ul><li>A Stand Alone computer system is a computer that is not connected to any other </li></ul><ul><li>A network is a linked set of computer systems that are capable of sharing programs, data and sending messages </li></ul>
  4. 4. Local Area Networks <ul><li>A LAN is a network of computers connected over a small geographical area, usually inside the 1 building </li></ul><ul><li>Examples </li></ul><ul><ul><li>School LAN </li></ul></ul><ul><ul><li>LAN in your house </li></ul></ul><ul><li>Uses </li></ul><ul><ul><li>Sharing printers </li></ul></ul><ul><ul><li>Sharing files and data. </li></ul></ul><ul><li>Transmission Media </li></ul><ul><ul><li>Copper wire, fibre optic, wireless </li></ul></ul>
  5. 5. Wide Area Networks <ul><li>A WAN is a network of computers over a large geographical area, such as across a country or the world. </li></ul><ul><li>Examples </li></ul><ul><ul><li>The Internet </li></ul></ul><ul><ul><li>Companies like the BBC communicating across the world </li></ul></ul><ul><li>Uses </li></ul><ul><ul><li>Video-conferencing, use of e-mail, live chat </li></ul></ul><ul><ul><li>Multi-user databases </li></ul></ul><ul><ul><li>E-commerce and entertainment </li></ul></ul><ul><li>Transmission Media </li></ul><ul><ul><li>Fibre Optic, Microwave transmission, Satellite links </li></ul></ul>
  6. 6. Advantages of Networks <ul><li>You can share hardware therefore saving money </li></ul><ul><li>They allow you to communicate with people via email, video conferencing etc </li></ul><ul><li>You can buy and sell goods online </li></ul><ul><li>You can share anti virus software </li></ul><ul><li>You can log on to lots of different stations and still access your own documents </li></ul>
  7. 7. Aims of Lesson 2 <ul><li>Last Lesson </li></ul><ul><li>What is a Stand Alone Computer System? </li></ul><ul><li>What is a Network? </li></ul><ul><li>Local Area Networks </li></ul><ul><li>Wide Area Networks </li></ul><ul><li>Transmission Media for LANs and WANs </li></ul><ul><li>Today’s Lesson </li></ul><ul><li>Network Security </li></ul><ul><li>Client/Server Networks </li></ul><ul><li>Network Interface Cards </li></ul><ul><li>Freeware/Shareware </li></ul>
  8. 8. Network Security <ul><li>Passwords = Users have passwords to keep their data secure and prevent unwanted tampering with data </li></ul><ul><li>Encryption = putting data into a code to prevent it being intercepted, for example your bank details </li></ul><ul><li>Physical Methods </li></ul><ul><ul><ul><li>Door lock </li></ul></ul></ul><ul><ul><ul><li>Finger print reader </li></ul></ul></ul><ul><ul><ul><li>Number keypad </li></ul></ul></ul><ul><ul><ul><li>Others? </li></ul></ul></ul>
  9. 9. Client/Server Networks <ul><li>Client/Server Networks </li></ul><ul><ul><li>Where there are many clients that access files stored on servers </li></ul></ul><ul><li>Network Interface card </li></ul><ul><ul><li>A NIC is fitted inside a computer system to allow it to communicate with a computer network </li></ul></ul><ul><li>Freeware </li></ul><ul><ul><li>This is software you get for free and there are no restrictions on copying etc, i.e ITunes </li></ul></ul><ul><li>Shareware </li></ul><ul><ul><li>This is software you get a 30 day trial for and then have to pay for it </li></ul></ul>
  10. 10. Networks = What you need to know! <ul><li>What is a Stand Alone Computer System? </li></ul><ul><li>What is a Network? </li></ul><ul><li>Local Area Networks </li></ul><ul><li>Wide Area Networks </li></ul><ul><li>Transmission Media for LANs and WANs </li></ul><ul><li>LANs = Copper wire/Fibre Optic/Wireless </li></ul><ul><li>WANs = Microwave/Fibre Optic/Satellite </li></ul><ul><li>Advantages of LANs? </li></ul><ul><ul><li>Share hardware </li></ul></ul><ul><ul><li>Share files </li></ul></ul><ul><ul><li>Send emails </li></ul></ul><ul><li>Network Security </li></ul><ul><ul><li>Passwords </li></ul></ul><ul><ul><li>Encryption </li></ul></ul><ul><ul><li>Physical Methods? </li></ul></ul><ul><li>Client/Server Network </li></ul><ul><li>Network Interface Card </li></ul>
  11. 11. Network Powerpoint <ul><li>Slide 1 = Covering Slide </li></ul><ul><li>Slide 2 = Standalone/Network definitition </li></ul><ul><li>Slide 3 = LANs / Examples and Transmission Media </li></ul><ul><li>Slide 4 = WANs / Examples and Transmission Media </li></ul><ul><li>Slide 5 = Advantages of Networks </li></ul><ul><li>Slide 6 = Network Security </li></ul><ul><li>Slide 7 = Client/Server and Network Interface Card </li></ul>
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