Communication Concept 3

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    29-May-2015

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Network-Internet

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<ul><li> 1. Network-Internet </li></ul> <p> 2. Network-Internet Network , ATM internet internet ... 3. Computer NetworkInternet 4. Computer Network 5. Communication 1. (Sending Unit) 2. (Transmission Channel) 3. (Receiving Unit) 6. Communication (source) 2. (sink) 3. (channel) 7. Communication 4. (encoding) 5. (decoding) 6. (noise) 8. Analog 2) Digital 2 a 9. Data transmission (asynchronous data transmission)1 start bit1 stop bit8 data bits (synchronous data transmission) 1 start bit1 stop bit data packeterror check bits 10. 1. (Simplex) 11. (Half Duplex) 12. (Full Duplex) 13. (media) (transmission rate) Kbps, Mbps 14. 2 (Wire pair Twisied pair ), (Coaxial Cables), (Fiber optics) (Microwave), (Stellite Tranmission) 15. 16. (Twisted pair Cable) 2 " " (Amplifier) 5-6 . " " (Repeater) -3 . 17. (CoaxialCable) "" 2 " (Echo) () 18. (Fiber Optic Cable) () 19. 20. (MicrowaveSystem) d = 7.14 (1.33h)1/2 . d = h = ( ) - 30-50 . 21. (SatelliteTransmission) 22. 3 LAN (Local Area Network) MAN (Metropolitan Area Network) WAN (Wide Area Network) 23. : LAN (Local Area Network) 24. : MAN (Metropolitan Area Network) LAN 25. ( Wide Area Network : WAN) LAN MAN WAN 26. Mesh Topology Mesh Topology Mesh Topology Hybrid Topology Hybrid Topology Hybrid Topology( 27. 28. HUB Repeater 29. Network Interface Card (NIC) LAN Card Card PC 30. Switch Bridge media 31. Router media 32. Gateway media 33. Protocol Protocol TCP/IP IPX/SPX NetBIOS AppleTalk TCP/IP Transmission Control Protocol / Internet Protocol 34. ProtocolIPX/SPX Novell Netware IPX/SPX 2 IPX k Packet Exchange) SPX (Sequenced Packet Exchange)NetBIOSic Input/Output System NetBIOS API (Application g Interfac) NetBIOS Windows workgroupAppleTalk Apple Computer Macintosh 35. Internet 36. Internet (INTERNET) ? Platform (access) 37. Internet (Internet) (Protocol) (TCP/IP : Transmission Control Internet Protocol) 38. Internet WAN (Internet Service Provider - ISP) TCP/I (backbone) ( ) ISP 39. IP Address TCP/IP IP Address 0-255 ...203.168.23.1 5 (class) 40. Domain Name Server () n name n name server (DNS) 202.28.32.3 www.informatics.msu.ac.th 41. DomainDOMAIN .ac academic msu.ac.th.ororganization nectec.or.th.cocommercial ksc.co.th.gogovernment moph.go.th.net networkmsuradio.net 42. Service E-mail e-maiame@[ .] ..jenchoke.t@msu.ac.th ( ) 43. Service (Newsgroup) (news) ( Newsgro / () t CP/IP (remote login) 44. Service ftp server (anonymous user) w 45. ( ) Topology Bus, Ring,Star Bus, Ring, Star Domain .ac, .or, .og, .co </p>