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Computer Networks- Network Basics

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Computer Networks- Network Basics
Network Definition
Simultaneous access to data
Shared peripheral device
Sharing Data
The Uses of Network

The Uses of a Network
Common Network Types

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Computer Networks- Network Basics

  1. 1. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Affiliated Institution of G.G.S.IP.U, Delhi BCA Computer Networks BCA210 Network Basics Keywords: Network, Internetworking
  2. 2. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Network Definition • Set of technologies that connects computers • Allows communication and collaboration between users 2
  3. 3. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 3 • Simultaneous access to data – Data files are shared • Access can be limited – Shared files stored on a server – Software can be shared • Site licenses • Network versions • Application servers
  4. 4. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 • Shared peripheral device – Printers and faxes are common shares – Reduces the cost per user – Devices can be connected to the network – Print servers control network printing • Manage the print queue 4
  5. 5. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 5 Sharing Data
  6. 6. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 6 • Personal communication – Email • Instantaneous communication – Conferencing • Tele conferencing • Videoconferencing • Audio-conferencing • Data-conferencing – Voice over IP • Phone communication over network wires The Uses of Network
  7. 7. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Voice over IP
  8. 8. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 The Uses of a Network • Easier data backup – Backup copies data to removable media – Server data backed up in one step
  9. 9. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 • Local Area Network (LAN) – Contains printers, servers and computers – Systems are close to each other – Contained in one office or building – Organizations often have several LANS Common Network Types
  10. 10. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 • Wide Area Networks (WAN) – Two or more LANs connected – Over a large geographic area – Typically use public or leased lines • Phone lines • Satellite – The Internet is a WAN Common Network Types
  11. 11. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Hybrid Network Types • Campus Area Networks (CAN) – A LAN in one large geographic area – Resources related to the same organization – Each department shares the LAN
  12. 12. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Hybrid Network Types • Metropolitan Area Network (MAN) – Large network that connects different organizations – Shares regional resources – A network provider sells time
  13. 13. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Hybrid Network Types • Home Area Network (HAN) – Small scale network – Connects computers and entertainment appliances – Found mainly in the home
  14. 14. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector – 9, Dwarka Institutional Area, New Delhi-75 Hybrid Network Types • Personal Area Network (PAN) – Very small scale network – Range is less than 2 meters – Cell phones, PDAs, MP3 players

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