pengantar teknologi informasi

Pengantar Teknologi InformasiPengantar Teknologi Informasi

Networking

Agenda

Pengenalan Protokol Jaringan Pengenalan Wireless Communication

Mengapa ada Protokol Jaringan?

I like rabbits

L: DutchIk hou vankonijnen

L: DutchIk hou vankonijnen

Fax #:---L: DutchIk hou vankonijnen

Fax #:---L: DutchIk hou vankonijnen

J’aimaeles lapins

Information for the Remote Translator

Informationfor the RemoteSecretary

Location A Location B

Message

Mengapa ada Protokol Jaringan?

I like rabbits

L: DutchIk hou vankonijnen

L: DutchIk hou vankonijnen

Fax #:---L: DutchIk hou vankonijnen

Fax #:---L: DutchIk hou vankonijnen

J’aimeles lapins

Information for the remote translator

Informationfor the remotesecretary

Location A Location B

1

2

3Layers

Message

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

Fungsi Device pada Layer

7Application

6Presentation

5 Session

4 Transport

3 Network

2 Data Link

1 Physical

NIC Card

Hub

Layer Host dan Media

7 Application

6 Presentation

5 Session

4 Transport

3 Network

2 Data Link

1 Physical

Host layers:Host layers: Menyediakan data yang akurat yang dikirim antar komputer

Media layers:Media layers: Mengontrol pengiriman pesan secara fisik antar jaringan}}

Fungsi Setiap Layer

Provides network services to application processes (such as electronic mail, file transfer, and terminal emulation)

7 Application

Fungsi Setiap Layer

Network services to applicationsNetwork 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

Fungsi Setiap Layer

Inter-host communication• Establishes, manages, and

terminates sessions between applications

7 Application

6 Presentation

5 Session

Network services to applicationsNetwork services to applications

Data representationData representation

Fungsi Setiap Layer

7 Application

6 Presentation

5 Session

Transport4

Inter-host communicationInter-host communication

Network services to applicationsNetwork services to applications

Data representationData 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

Fungsi Setiap Layer

7 Application

6 Presentation

5 Session

Transport4

Network3

Inter-host communicationInter-host communication

Network services to applicationsNetwork services to applications

Data representationData representation

End-to-end connection End-to-end connection reliabilityreliability

Addresses and best path• Provides connectivity and path

selection between two end systems

• Domain of routing

Fungsi Setiap Layer

7 Application

6 Presentation

5 Session

Transport4

Network3

Data Link2

Inter-host communicationInter-host communication

Network services to applicationsNetwork services to applications

Data representationData representation

End-to-end connection End-to-end connection reliabilityreliability

Addresses and best pathAddresses and best path

Access to media• Provides reliable transfer of data

across media• Physical addressing, network

topology, error notification, flow control

Fungsi Setiap Layer

7 Application

6 Presentation

5 Session

Transport4

Network3

Data Link2

Physical1

Inter-host communicationInter-host communication

Network services to applicationsNetwork services to applications

Data representationData representation

End-to-end connection End-to-end connection reliabilityreliability

Addresses and best pathAddresses and best path

Access to mediaAccess to media

Binary transmission• Wires, connectors, voltages,

data rates

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

Wireless Media

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

Radio

Microwave

Microwave station : menggunakan antena pantul bumi

(earth-based reflective dish) harus ditransmisikan secara lurus tanpa

halangan

Microwave

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)

Komunikasi Satelit