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Pengantar Teknologi Informasi
Networking
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Agenda Pengenalan Protokol Jaringan Pengenalan Wireless Communication
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Mengapa ada Protokol Jaringan?
I like rabbits L: Dutch Ik hou van konijnen Fax #:--- J’aimae les lapins Information for the Remote Translator Information for the Remote Secretary Location A Location B Message
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Mengapa ada Protokol Jaringan?
I like rabbits L: Dutch Ik hou van konijnen Fax #:--- J’aime les lapins Information for the remote translator Information for the remote secretary Location A Location B 1 2 3 Layers Message
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Model Layer Pada Jaringan
Mengurangi kompleksitas (satu masalah besar diubah dalam 7 bagian kecil ) Menstandarkan antarmuka Memudahkan belajar mengajar 7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link 1 Physical
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Fungsi Device pada Layer
7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link 1 Physical NIC Card
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Layer Host dan Media 7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link 1 Physical Host layers: Menyediakan data yang akurat yang dikirim antar komputer Media layers: Mengontrol pengiriman pesan secara fisik antar jaringan }
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Fungsi Setiap Layer Application 7
Provides network services to application processes (such as electronic mail, file transfer, and terminal emulation) 7 Application
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Fungsi Setiap Layer Network services to applications
Ensures data is readable by receiving system Format of data Data structures Negotiates data transfer syntax for application layer 7 Application 6 Presentation Data representation
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Fungsi Setiap Layer Inter-host communication
Establishes, manages, and terminates sessions between applications 7 Application 6 Presentation 5 Session Network services to applications Data representation
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Fungsi Setiap Layer 7 Application 6 Presentation 5 Session Transport 4
Inter-host communication Network services to applications Data representation End-to-end connection reliability Concerned with data transport issues between hosts Data transport reliability Establishes, maintains, and terminates virtual circuits Fault detection and recovery Information flow control
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Fungsi Setiap Layer 7 Application 6 Presentation 5 Session Transport 4
Network 3 Inter-host communication Network services to applications Data representation End-to-end connection reliability Addresses and best path Provides connectivity and path selection between two end systems Domain of routing
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Fungsi Setiap Layer 7 Application 6 Presentation 5 Session Transport 4
Network 3 Data Link 2 Inter-host communication Network services to applications Data representation End-to-end connection reliability Addresses and best path Access to media Provides reliable transfer of data across media Physical addressing, network topology, error notification, flow control
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Fungsi Setiap Layer 7 Application 6 Presentation 5 Session Transport 4
Network 3 Data Link 2 Physical 1 Inter-host communication Network services to applications Data representation End-to-end connection reliability Addresses and best path Access to media Binary transmission Wires, connectors, voltages, data rates
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Pengenalan Wireless Communication
Wireless communication (komunikasi tanpa kabel) digunakan ketika kabel tidak mungkin atau tidak layak dipasang/ditampilkan. Media yang digunakan antara lain : radio gelombang mikro / microwave bluetooth IrDa, dll
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Wireless Media
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Radio Sinyal dibawa dalam spektrum elektomagnetik
secara 2 arah (bidirectional) Radio Broadcast : sinyal radio didistribusikan melalui jarak jauh dan dekat Radio Cellular : bentuk dari radio broadcast yang digunakan untuk komunikasi bergerak
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Radio
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Microwave Microwave station :
menggunakan antena pantul bumi (earth-based reflective dish) harus ditransmisikan secara lurus tanpa halangan
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Microwave
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Komunikasi Satelit Stasiun Luar Angkasa (space station) menerima sinyal gelombang mikro dari antena pantul bumi (earth-based reflective dish), menguatkan sinyal dan membroadcast sinyal kembali ke setiap stasiun bumi (earth-based station)
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Komunikasi Satelit
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