Selasa, 04 November 2014

TUGAS ARSITEKTUR TELEMATIKA (TUGAS 2)

1.   JELASKAN TENTANG PERKEMBANGAN JARINGAN KOMPUTER SEBAGAI SARANA YANG DIGUNAKAN DALAM PROSES TELEMATIKA

Dalam proses telematika jaringan komputer sangat diperlukan karena kegunaan tersebut, makan kegunaan dari jaringan komputer adalah unutk saling berinteraksi antar komputer yang satu dengan komputer yang lainnya. dapat diartikan sebagai sebuah rangkaian dua atau lebih komputer. Komputer-komputer ini akan dihubungkan satu sama lain dengan sebuah sistem komunikasi. Dengan jaringan komputer ini dimungkinkan bagi setiap komputer yang terjaring di dalamnya dapat saling tukar-menukar dataprogram, dan sumber daya komputer lainnya, seperti media penyimpananprinter, dan lain-lain. Jaringan komputer yang menghubungkan komputer-komputer yang berada pada lokasi berbeda dapat juga dimanfaatkan untuk mengirim surat elektronik (e-mail), mengirim file data (upload) dan mengambil file data dari tempat lain (download), dan berbagai kegiatan akses informasi pada lokasi yang terpisah. Tujuan utama dari sebuah jaringan komputer adalah sharing resource (sumber daya), dimana sebuah komputer dapat memanfaatkan sumber daya yang dimiliki komputer lain yang berada dalam jaringan yang sama. Perkembangan teknologi komunikasi data dan jaringan komputer dewasa ini sudah tidak terbatas lagi hanya pada komputer. Berbagai perangkat teknologi komunikasi yang dapat membantu dalam proses telematika saat ini berkembang mengikuti perkembangan teknologi komputer, banyak diantaranya mengintegrasikan perangkat komputer, seperti mikroprosesormemoridisplaystorage, dan teknologi komunikasi ke dalamnya. Suatu jaringan komputer pada umumnya terdiri atas:

  1. Kartu jaringan (network interface card / NIC) pada setiap komputer
  2. Medium Koneksi, yang menghubungkan kartu jaringan satu komputer ke komputer lainnya, biasa disebut sebagai medium transmisi data, bisa berupa kabel maupun nirkabel atau tanpa-kabel (wirelessseperti radio, microwave, satelit, dan sebagainya).
  3. Minimal dua buah komputer
  4. Peralatan interkoneksi, seperti HubBridgeSwitchRouter, dan Gateway, apabila jaringan yang dibentuk semakin luas jangkauannya.
  5. Perangkat Lunak Sistem operasi jaringan (network operating system software / NOSS) yang berfungsi untuk melakukan pengelolaan sistem jaringan, misalnya: Microsoft Windows 2000 serverMicrosoft Windows NTNovell NetwareLinux, dan sebagainya.

2.   JELASKAN TENTANG PERKEMBANGAN TEKNOLOGI WIRELESS YANG MELIPUTI HARDWARE , SISTEM OPERASI DAN PROGRAM APLIKASI YANG DIGUNAKAN PADA PERANGKAT WIRELESS
Pada tahun 1997 IEEE membuat suatu spesifikasi/standar WLAN yang pertama dengan kode IEEE 802.11 (bekerja pada frekuensi 2.4 GHz). Standar ini diciptakan oleh Komite IEEE (kode IEEE 802) yang menangani standardisasi jaringan LAN/MAN. Hanya sayang kecepatan komunikasi datanya baru 2 Mbps. Oleh karena itu, pada tahun 1999 muncul spesifikasi baru bernama 802.11b dimana tipe ini bisa mencapai data rate 11 Mbps. Namun, ada satu kelemahan dari tipe ini, yaitubanyak alat-alat lain yang menggunakan gelombang radio pada frekuensi ini 2.4 GHz (misal: cordless phone, microwave oven, dll.). Jadi, sangat mungkin terjadi Interferensi yang akan menggangu performa WLAN tipe ini. Perubahan dan spesifikasi baru yang lebih mumpuni pun bermunculan. Misalnya, tak lama setelah tipe 802.11b, IEEE membuat spek baru 802.11a yang menggunakan frekuensi 5 GHz dan data rate mencapai 54 Mbps. Kemudian pada tahun 2002, muncul 802.11g yang menggabungkan kelebihan pada 802.11b dan 802.11a.
Tipe ini bekerja pada frekuensi 2,4Ghz dengan kecepatan transfer data teoritis maksimal 54Mbps. Peralatan 802.11g kompatibel dengan 802.11b, artinya pemakaiannya dapat saling dipertukarkan. Misalkan saja sebuah komputer yang menggunakan LAN card 802.11g dapat memanfaatkan access point 802.11b, dansebaliknya.Pada tahun 2006, 802.11n dikembangkan dengan menggabungkan teknologi 802.11b dan 802.11g. Teknologi ini dikenal dengan istilah MIMO (Multiple Input Multiple Output) merupakan teknologi Wi-Fi terbaru. MIMO dibuat berdasarkan spesifikasi Pre-802.11n. Kata ”Pre-” menyatakan “Prestandard versions of 802.11n”. Lebar frekuensi tipe 802.11n ini 2.4 GHz dengan data rate mencapai 100Mbps. Daya tembus MIMO terhadap penghalang lebih baik, selain itu jangkauannya lebih luas sehingga Anda dapat menempatkan laptop atau klien Wi-Fi sesuka hati.


Perbandingan Perkembangan Teknologi Wireless
WiFi 802.11g
WiMAX 802.16-2004*
WiMAX 802.16e
CDMA2000 1x EV-DO
WCDMA/ UMTS
Approximate max reach (dependent on many factors)
100 Meters
8 Km
5 Km
*
*
Maximum throughput
54 Mbps
75 Mbps (20 MHz band)
30 Mbps (10 MHz band)
3.1 Mbps (EVDO Rev. A)
2 Mbps (10+ Mbps fpr HSDPA)
Typical Frequency bands
2.4 GHz
2-11 GHz
2-6 GHz
1900 MHz
1800,1900,2100 MHz
Application
Wireless LAN
Fixed Wireless Broadband (eg-DSL alternative)
Portable Wireless Broadband
Mobile Wireless Broadband
Mobile Wireless Broadband


Hardware yang digunakan pada wireless
a. Hardware Access Point + plus = Perangkat standard yang digunakan untuk access point. Access Point dapat berupa perangkat access point saja atau dengan dual fungsi sebagai internal router.
b. PCMCIA Adapter = Alat ini dapat ditambahkan pada notebook dengan pada PCMCIA slot. Model PCMCIA juga tersedia dengan tipe G atau double transmit.
c. USB Wireless Adaptor = Alat ini mengambil power 5V dari USB port. Untuk kemudahan USB WIFI adapter dengan fleksibel ditempatkan bagi notebook dan PC.
d. USB Add-on PCI slot = Perangkat ini umumnya diberikan bersama paket mainboard untuk melengkapi perangkat WIFI pada sebuah computer. Sama kemampuannya dengan PCI card wireless network tetapi mengunakan jack USB internal pada mainboard termasuk pemakaian power diambil dari cable tersebut.
e. Mini PCI bus adapter = PCImini bus adalah slot PCI yang disediakan pada notebook dan pemakai dapat menambahkan perangkat seperti WIFI adaptor didalam sebuah notebook.
f. PCI card wireless network = PCIcard Wireless network dapat juga berupa sebuah card WIFI yang ditancapkan pada slot computer atau dengan mengambil power dari USB tetapi dipasangkan pada PCI slot. Perangkat Wireless network dapat juga diaktifkan menjadi Access point. Perangkat jenis PCI card dipasangkan permanen pada sebuah desktop PC.

Software yang digunakan pada wireless
  • Wireless Wizard = Meningkatkan keandalan dan penggunaan dari setiap WiFi, WiMAX, LTE, 3G atau jaringan data nirkabel.
  • Easy wifi radar = untuk menemukan dan terhubung untuk membuka jalur akses nirkabel dengan mouseclick tunggal. Terhubung ke hotspot gratis tanpa kerumitan.
  • Advanced port scanner = dapat memindai port sangat cepat, berisi deskripsi untuk port umum, dan dapat melakukan scan pada rentang port yang telah ditentukan.


Sistem Operasi yang digunakan pada wireless

Sistem Operasi yang digunakan hendaknya disesuaikan dengan perangkat keras yang digunakan, perhatikan minimum hardware. Komputer dengan perangkat keras terbaru biasanya telah mampu menjalankan system operasi Windows XP atau Windows Vista. Selain menggunakan Windows XP atau Vista, anda juga bias menggunakan system operasi gratis seperti, Ubuntu, Open SusE dan mandriva. Untuk penggunaan macintosh biasanya telah terinstal system operasi Mac OS.

Sumber:
  • http://cardcaptor-dyah39.blogspot.com/2012/11/tugas-2-pengantar-telematika.html
  • http://afdhalnur.blogspot.com/2010/11/hardware-dan-software-yang-digunakan.html
  • http://rizma.blogstudent.mb.ipb.ac.id/2010/06/16/3/#
  • http://singgihwalkers.wordpress.com/2012/11/04/pengantar-telematika/
  • http://dedesetiawan18.blogspot.com/p/blog-page_3.html





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