06 jaringan komputer

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06 jaringan komputer

  1. 1. PENGANTAR ILMU KOMPUTER Komunikasi Data dan Jaringan Komputer 12/13/11 Zulfadli Sulthan - PTIK - UNM
  2. 2. Sistem Komunikasi Data <ul><li>Melibatkan minimal 2 simpul </li></ul><ul><ul><li>Simpul bisa berupa komputer maupun peralatan lain </li></ul></ul><ul><ul><li>Simpul berperan sebagai pengirim dan/atau penerima data </li></ul></ul><ul><li>Dihubungkan oleh media transmisi </li></ul><ul><li>Data yg ditransmisikan berupa isyarat listrik </li></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  3. 3. Gangguan Komunikasi Data <ul><li>Data yg sampai kepada penerima bisa tidak sama dg yg disampaikan pengirim </li></ul><ul><li>Penyebab Utama </li></ul><ul><ul><li>Atenuasi </li></ul></ul><ul><ul><ul><li>Pelemahan sinyal akibat jarak </li></ul></ul></ul><ul><ul><li>Distorsi Tunda </li></ul></ul><ul><ul><ul><li>Pengaruh pada waktu penerimaan </li></ul></ul></ul><ul><ul><li>Derau </li></ul></ul><ul><ul><ul><li>Penambahan data yg tidak perlu pada saat transmisi data </li></ul></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  4. 4. Arah Transmisi <ul><li>Menyatakan arah isyarat dalam media transmisi </li></ul><ul><ul><li>Simplex / One way </li></ul></ul><ul><ul><ul><li>Tidak dapat bertindak sebagai pengirim dan penerima sekaligus </li></ul></ul></ul><ul><ul><li>Half-Duplex </li></ul></ul><ul><ul><ul><li>Mengirim dan menerima data bergantian </li></ul></ul></ul><ul><ul><li>Full-Duplex </li></ul></ul><ul><ul><ul><li>Mengirim dan menerima data berbarengan </li></ul></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  5. 5. Media Transmisi <ul><li>Penghubung antara pengirim dan penerima u/ melewatkan data </li></ul><ul><ul><li>Media kabel </li></ul></ul><ul><ul><li>Media nirkabel </li></ul></ul><ul><li>Media Kabel </li></ul><ul><ul><li>Twisted Pair Cable </li></ul></ul><ul><ul><ul><li>UTP </li></ul></ul></ul><ul><ul><ul><li>STP </li></ul></ul></ul><ul><ul><li>Coaxial </li></ul></ul><ul><ul><li>Fiber Optic </li></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  6. 6. Jaringan Komputer <ul><li>Hubungan dua atau lebih komputer yang bertujuan u/ melakukan pertukaran data </li></ul><ul><li>Memungkinkan berbagi sumberdaya </li></ul><ul><li>Jenis jaringan menurut rentang geo </li></ul><ul><ul><li>LAN </li></ul></ul><ul><ul><ul><li>Mencakup area yg terbatas (<1 Km) </li></ul></ul></ul><ul><ul><li>MAN </li></ul></ul><ul><ul><ul><li>Mencakup area dg rentang satu kota (10-45 Km) </li></ul></ul></ul><ul><ul><li>WAN </li></ul></ul><ul><ul><ul><li>Menghubungkan antar kota atau lebih luas lagi. </li></ul></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  7. 7. Topologi Jaringan <ul><li>Susunan komputer secara fisik dalam suatu jaringan </li></ul><ul><ul><li>Bus </li></ul></ul><ul><ul><li>Ring </li></ul></ul><ul><ul><li>Star </li></ul></ul><ul><ul><li>Extended Star </li></ul></ul><ul><ul><li>Hierarchial </li></ul></ul><ul><ul><li>Mesh </li></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  8. 8. Bus Topology <ul><li>All of its nodes connected directly to one link </li></ul><ul><ul><li>No other connections between nodes </li></ul></ul><ul><ul><li>Each host is wired to a common wire. </li></ul></ul><ul><li>One advantage of this topology is that all hosts are connected to each other, and thus, can communicate directly. </li></ul><ul><li>One disadvantage of this topology is that a break in the cable disconnects hosts from each other. </li></ul><ul><li>Enables all networking devices to see all signals from all other devices </li></ul><ul><ul><li>Traffic problems and collisions are common. </li></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  9. 9. Ring Topology <ul><li>Single closed ring consisting of nodes and links. </li></ul><ul><ul><li>Each node connected to only two adjacent nodes. </li></ul></ul><ul><ul><li>All devices wired directly to each other. </li></ul></ul><ul><li>In order for information to flow, each station must pass the information to its adjacent station. </li></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  10. 10. Star Topology <ul><li>Has a central node with all links to other nodes radiating from it and allows no other links. </li></ul><ul><li>Its primary advantage is that it allows all other nodes to communicate with each other, conveniently. </li></ul><ul><li>Its primary disadvantage is that if the central node fails, the whole network becomes disconnected.. </li></ul><ul><li>The flow of all information would go through one device. </li></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  11. 11. Extended Star Topology <ul><li>Repeats a star topology, except that each node that links to the center node is, also, the center of another star. </li></ul><ul><li>The advantage of this is that it keeps wiring runs shorter, and limits the number of devices that need to interconnect to any one central node. </li></ul><ul><li>An extended star topology is very hierarchical, and information is encouraged to stay local </li></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  12. 12. Hierarchical Topology <ul><li>Similar to the extended star topology </li></ul><ul><ul><li>uses a trunk node from which it, then, branches to other nodes. </li></ul></ul><ul><li>The trunk is a wire that has several layers of branches. </li></ul><ul><li>The flow of  information is hierarchical. </li></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  13. 13. Mesh Topology <ul><li>Every node is linked directly to every other node. </li></ul><ul><li>The advantages are that </li></ul><ul><ul><li>Should any link fail to function, information can flow through any number of other links to reach its destination. </li></ul></ul><ul><ul><li>Allows information to flow along many paths on its way through the network. </li></ul></ul><ul><li>The primary physical disadvantage is the amount of media for the links, and the amount of connections to the links becomes overwhelming. </li></ul><ul><li>Depends greatly on the devices used. </li></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  14. 14. Perangkat Interkoneksi Antarjaringan <ul><li>Interkoneksi Antarjaringan </li></ul><ul><ul><li>Hubungan antara dua buah jaringan atau lebih. </li></ul></ul><ul><li>Perangkatnya </li></ul><ul><ul><li>Repeater / Hub </li></ul></ul><ul><ul><li>Bridge / Switch </li></ul></ul><ul><ul><li>Router </li></ul></ul>12/13/11 Zulfadli Sulthan - PTIK - UNM
  15. 15. Thankyou 12/13/11 Zulfadli Sulthan - PTIK - UNM

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