17 October 2014

Skema Jaringan dan Protokol

Langsung saja kita akan membahas Layer OSI dan Layer TCP/IP :
osisosi
Layer OSI
ž  Pengertian Layer OSI
Masalah utama dalam komunikasi antar komputer dari vendor yang berbeda adalah karena mereka mengunakan protocol dan format data yang berbeda-beda. Untuk mengatasi ini, International Organization for Standardization (ISO) membuat suatu arsitektur komunikasi yang dikenal sebagai Open System Interconnection (OSI) model yang mendefinisikan standar untuk menghubungkan komputer-komputer dari vendor-vendor yang berbeda.
Layer OSI ada 7 buah, berikut adalah nama – nama layer tersebut :
7th. Application
Fungsi Layer Application :
Berfungsi sebagai interface aplikasi dengan fungsionalitas jaringan, mengatur bagaimana aplikasi dapat mengakses jaringan, dan kemudian membuat pesan-pesan kesalahan. Pada layer inilah sesungguhnya user “berinteraksi dengan jaringan”
Contoh : FTP, SMTP, HTTP, POP3, NFS, telnet
6th. Presentation
Fungsi Layer Presentation :
Berfungsi untuk mentranslasikan data yang hendak ditransmisikan oleh aplikasi ke dalam format yang dapat ditransmisikan melalui jaringan.
Protocol pada layer ini adalah sejenis redirector software, seperti network shell (semacam virtual network computing (VNC) atau remote desktop protocol (RDP))
5th. Session
Fungsi Layer Session :
Berfungsi untuk mendefinisikan bagaimana koneksi dimulai, dipelihara, dan diakhiri. Selain itu, di layer ini juga dilakukan resolusi nama.
Protocol pada layer ini :

  1. Net BIOS
  2. Net BEUI (Net BIOS Extended User Interface)
  3. ASDP (Apple Talk Data Stream Protocol)
  4. PAP (Printer Access Protocol)
4th. Transport
Fungsi Layer Transport :
Berfungsi untuk memecah data menjadi paket-paket data serta memberikan nomor urut setiap paket sehingga dapat disusun kembali setelah diterima.
layer ini juga bertanggung jawab membagi data menjadi segmen, menjaga koneksi logika “end-to-end” antar terminal dan menyediakan penganan error
3rd. Network
Fungsi Layer Network :
Berfungsi untuk mendefinisikan alamat-alamat IP, membuat header untuk paket-paket, dan melakukan routing melalui internetworking dengan menggunakan router dan switch layer-3
2nd. Data-link
Fungsi Layer Data-link :
Berfungsi untuk menentukan bagaimana bit-bit data dikelompokkan menjadi format yang disebut frame yang berhubungan dengan hardware kemudian diangkut melalui media
Layer ini juga mengatur komunikasi layer physical antara sistem koneksi dan penanganan error
1st. Physical
Fungsi Layer Physical :
Berfungsi untuk mendefinisikan media dan menjaga transmisi jaringan, metode pensinyalan, sinkronisasi bit, arsitektur jaringan, topologi jaringan, dan pengkabelan.

Layer TCP/IP
Arsitektur TCP/IP tidaklah berbasis model referensi tujuh lapis OSI, tetapi menggunakan model referensi DARPA. Seperti diperlihatkan dalam diagram di atas, TCP/IP mengimplemenasikan arsitektur berlapis yang terdiri atas empat lapis.
Empat lapis ini, dapat dipetakan (meski tidak secara langsung) terhadap model referensi OSI. Empat lapis ini, kadang-kadang disebut sebagai DARPA Model, Internet Model, atau DoD Model, mengingat TCP/IP merupakan protokol yang awalnya dikembangkan dari proyek ARPANET yang dimulai oleh Departemen Pertahanan Amerika Serikat.
Berikut adalah macam – macam Layer TCP/IP , yaitu :
4th. Application

Fungsi Layer Apllication :
Berfungsi menyediakan servis-servis terhadap software-software yang berjalan pada komputer. Protokol-protokol yang beroperasi pada Application Layer: HTTP, FTP, POP3, SMTP, dll.
3rd. Transport
Fungsi Layer Transport :
Transport Layer berfungsi menyediakan servis yang akan digunakan oleh Application Layer. Mempunyai 2 protokol utama yaitu TCP dan UDP.
2nd. Internet
Fungsi Layer Internet :
Internet Layer memiliki fungsi sebagai penyedia fungsi IP Addressing, routing, dan menentukan path terbaik. Internet Layer memiliki 1 protokol yaitu TCP/IP.
1st. Network Access
Fungsi Layer Network Access :
Berfungsi mendefinisikan protokol-protokol dan hardware-hardware yang digunakan dalam pengiriman data. Pada layer ini terdapat protokol-protok seperti ethernet pada LAN, PPP pada WAN, dan juga Frame Relay.

15 October 2014

12 Best Bootable USB Creation Tools / Software

1. Rufus
If you don't want to hunt for separate tool for every operating system to test and it claims to be a fastest tool available on the internet. Rufus is a simple, straight forward and simple to use tool. It is as simple as a USB format tool finds in every Windows operating system.



  • You just run the Rufus and it will automatically scan your available USB ports for connecting media and show the detected USB drive names.
  • Select the appropriate USB drive, select file system to use on a flash drive, give appropriate name and show the path to ‘bootable’ .ISO image of your targeted operating system.
  • The .ISO image on your hard disk must be a valid bootable image because Rufus scan the image before you load it. If you get any error, just uncheck ‘Create bootable disk’ option.
  • Rufus can be used to create bootable USB drive for All Windows versions and all Linux distros.

+ Fast, easy, run without installation.
- Nothing
Download Rufus

http://rufus.akeo.ie/

Quote:2. WinToBootic
Again a basic tool with minimum option. Just drag and drop your .ISO image or click on ‘drop ISO here’ icon.

It will auto detect your USB media, you just have to hit the ‘Do It’ button, WinToBootic will do the everything rest.
+ minimal interface, run without installation.
- Does not support Linux
Download WinToBootic
Code:
http://www.wintobootic.com/

Quote:3. RMPrepUSB
It's all in one tool but too much difficult with a clutter of options and settings. If you don't know what are you doing, don't use it. This is for advanced user and I personally do not recommend it if you just want to write a bootable USB disk and test a new operating system. But if you want tweak the boot loader, change filesystem then RMPrepUSB is for you.


  • The special feature of RMPrepUSB is you can create a partition in USB drive just like you do on your hard disk making it more useful for saving files plus using the same drive as a separate folder for storing files.
  • This keeps your files separate from the operating system files.
Support all OS.
+ For advanced users.
- Difficult to use
Download RMPrepUSB
Code:
http://www.rmprepusb.com/documents/rmprepusb-beta-versions/Install_RMPrepUSB_Full_V2.1.659.zip?attredirects=0&d=1

Quote:4. Universal USB Installer
Though the name is Universal, this is a specialized tool for Linux and have a predefined list of most of the Linux distributions available. When you select the Linux distribution from the drop down menu, it provides a link for homepage of that distribution from where you can directly download the Linux distribution. If you already have on local disk, just browse to the ISO disk and select the appropriate USB flash drive to make it bootable for your favorite Linux distribution.


The extra feature of Universal USB Installer is that you can prepare a Live antivirus rescue disk using it. A special option for this is also given for reuse CD.
+ Specialized menu for Linux, also support Window 7
Download Universal USB Installer
http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/

Quote:5. YUMI


Yumi (Your Univarsal Multiboot Installer) is a special tool from the developer of Universal USB Installer except it has a special feature of installing more than one operating system in one USB drive without formatting it.
Untuk Yumi ini bisa 3 lebih os yang dimasukin
Download YUMI
http://www.pendrivelinux.com/yumi-multiboot-usb-creator/

Quote:6. UNetbootin

  • This tool is an exact clone of Universal USB installer or you can also say Universal USB installer is a clone of UNetbootin.
  • No any difference is found in this software and this is also specialized to create a bootable USB for any Linux distribution.
  • If you are not using Windows as your host operating system, then UNetbootin is an option to go for. UNetbootin is available for Linux, iOS and Windows.
  • So if you are using Linux, most of the software's listed here will not run where UNetbootin will come to help.

Download UNetbootin

http://unetbootin.sourceforge.net/

7. Linux Live USB Creator (LiLi)

  • This is really a great eye candy plus an excellent user interface. Apple style website with everything at right place and well categorized. The software is also excellent.
  • The special feature called built-in Virtualization allow users to run the installed Linux operating system without restarting the Windows which are an exclusive feature of LiLi.
If you are concerned only about Linux you must go for this.
Download LiLi Creator
http://www.linuxliveusb.com/en/download

Quote:8. Koala


The koala is also a tool that will help you to boot new operating system from USB stick. This is not a tool that will allow you to browse an ISO file stored on your hard disk and write it to the USB drive. Koala only scans CD / DVD drive to find .ISO images of Linux OS. Not recommended.
Download Koala
Code:
http://www.softpedia.com/dyn-postdownload.php?p=151443&t=4&i=1

Quote:9. WinSetUp From USB

This is also a tool for those who want to install multiple operating system on one USB device.
WinSetup From USB let you install Windows 7, Windows vista, any Linux distribution using Ubuntu variant and any Linux distribution using SysLinux one single USB device.
  • This is an exclusive function of Win Setup From USB and you must download it and give a try. When you prepare the USB drive using ‘WinSetup From USB’ you will be presented with the list of operating systems installed on the thumb drive and select the preferred operating system to boot from.
  • Though the interface is simple, non expert users may find it difficult to use.

Download WinSetUp From USB
http://www.softpedia.com/get/PORTABLE-SOFTWARE/System/System-Enhancements/WinSetupFromUSB.shtml

Quote:10. WinUSB Maker

This is more that just a bootable USB creation tool, though you can use it for that also. This is a special tool that will allow you to clone hard disk partition on your portable memory device like USB thumb drive or portable hard disk.
WinUSB maker copies exact partition of your local hard disk along with the boot files and file structure. You can also restore the saved partition from the USB device to your hard disk making it useful as a backup tool. This is a must have tool for everyone. We have already discussed about this earlier here.
Download WinUSB Maker
http://joshcellsoftwares.com/products/winusbmaker/

Quote:11. XBoot

This is more than just a bootable usb maker. You can create rescue cd or a disk having multiple operating systems or tools like antivirus rescue cd. It combines multiples tools in ISO image making it more useful than just a USB creating tool. XBoot can create ISO image from files and then write these files to USB drive for booting or installation.
Download XBoot here
Code:
https://sites.google.com/site/shamurxboot/download

Quote:12. Windows Bootable Image Creator
This is a straight forward and ultra small tool that accomplish its job as you expect. It has super simple interface and minimum buttons to avoid confusion of new user. This is a tool from AskVG.

There are only basic buttons and only one task to do. Just create a bootable USB drive to install or try new operating systems. I wonder how it is so small and lite. It is just 160KB in size.
Download Windows Bootable Image Creator
http://www.softpedia.com/get/System/Boot-Manager-Disk/Windows-Bootable-Image-Creator.shtml




TAMBAHAN DARI KASKUSER :

  • WinToFlash
  • WinToFlash is likely to make a big difference to the way you work. It will make life a lot easier for you. Quickly and simply install the program you needs and in no time at all you will find yourself writing essays on Windows and using your USB. The WinToFlash makes the job hassle free for you.
    Download WinToFlash
    wintoflash.com/
  • Win 7 USB/DVD Download Tool
  • Windows 8 USB Installer Maker
  • Bootable
  • Flashboot

http://www.kaskus.co.id/thread/518a2cf448ba546903000014/share-12-best-bootable-usb-creation-tools---software/