LANGKAH-LANGKAH MEMBUAT VIRTUAL PC

                                                         MICROSOFT VIRTUAL PC

Microsoft Virtual PC umumnya adalah berasal dari keluarga Microsoft sendiri seperti Windows 98, XP, Vista. Untuk linux kurang didukung dengan baik, jadi lebih baik memakai Software virtualization yang lain seperti VMWare tetapi tidak geratis.

            Guest adalah operating sistem pada virtual PC sedangkah Host adalah operating sistem asli/utama kalian.

Berikut ini adalah langkah-langkah virtualisasi :

v  Download Microsoft Virtual PC 2007 SP1 dari http://www.microsoft.com/windows/downloads/virtualpc/default.mspx

Note: Installer Microsoft Virtual PC juga memerlukan software pendukung seperti windows intaller 4.5 keatas dan MSXML 6.0 keatas. Pastikan kita telah memilikinya atau instalasi tidak dapat berjalan.

v  Setelah selesai mendownload, segera install. Langkah-langkah instalasi umumnya mudah di ingat(tinggal klik tombol Next).

v  Jalankan Microsoft Virtual PC dari Start –> Program –> Microsoft Virtual PC

v  Bila belum memiliki setting satu pun Virtual PC kita pasti akan mendapatkan Wizard seperti dibawah ini (Klik next).

v  Pilihlah create virtual machine

v  Pilihlah nama untuk guest OS.Penggunaan nama bebas,tetapi Saya menuliskan “WinXP Test Platform”.

v  Ketika windows akan di instal, saya memilih windows XP dari drop down list.

v  Adjust RAM menjadi 512 MB. Defaut RAM yang hanya 128 MB sangat kurang. Note: hati-hati dalam adjust RAM ini karena sejumlah inilah RAM dari host akan tersita oleh Guest. Karena alasan ini saya memutuskan memory host OS minimal 1 giga.

v  Kemudian kita membuat sebuah Harddisk untuk Guest OS. Bentuk fisik dari HDD ini sebenarnya hanyalah sebuah file. Ukuran file yang digunakan  besar sekali kira-kira mencapai lebih dari 2 giga,apa bila sudah diinstall. Pilihlah “new virtual disk”, default setting yang memberi ukuran hdd virtual sebesar 60 giga byte telah sangat memadai.

v  Apa bila An existing virtual hard disk sudah tertandai kalian bias memindahkan ke Anew virtual hard disk.Lalu klik Next.

v  Setelah Wizard selesai, klik finish. Setelah itu barulah masukan Windows XP CD kedalam CD Rom drive dan start virtual machine.

v  Pastikan CD windows XP berada pada cdrom drive, dan start virtual machine. Ada 2 cara melakukan virtual machine. Pertama dengan

1.     Dengan mengklik virtual machine file (*.vmc) atau klik setart pada virtual PC Console.

2.     Note: beberapa setting pada virtual machine masih grayed out karena Guest OS belum terinstall dan belum memiliki software “Virtual Machine addition”.

v  Lakukan instalasi seperti biasa (bagaimana cara menginstalasi windows XP diluar dari tutorial ini). Coba lakukan googling bila ingin mendapatkan tutorialnya.

v  Apabila layarnya sudah menjadi biru seperti yang di atas,tekan enter.

v  Tunggu sampai menjadi 100%.

v  Setelah OS terinstall dan kalian dapat boot kedalam, waktunya menambahkan sebuah Virtual Machine Additions. Klik pada menu Action dan pilih “Install or Update Virtual Machine Additions”. Kalian akan mendapatkan warning, klik saja continue dan lakukan install. Setelah install selesai, restart system.

v  Klik kanan di action lalu klik reset.

v  Selamat kalian sudah membuat sebuah Virtual PC " src="http://s2.wp.com/wp-includes/images/smilies/icon_smile.gif?m=1221156833g" /> . Berikutnya adalah dasar-dasar manipulasi file

v  Untuk mengcopy sebuah file dari host ke guest, klik dan drag sebuah file dari desktop/folder ke dalam virtual pc seperti pada gambar dibawah ini. Hal yang sama juga berlaku bila kalian ingin mengcopy dari guest ke host.

v  Kelemahan dari cara diatas adalah bila kalian ingin mengupdate file pada guest kemudian perubahan ini ingin juga diimplementasikan pada host maka kalian akan sering click and drag. Cara lain yang lebih baik adalah membuat sebuah shared folder. Langkahnya adalah sebagai berikut:

1.     Klik edit -> setting

2.     Ke pilihan shared folder dan buat sebuah share folder

3.     Kemudian untuk mengakses shared folder, gunakan windows explorer pada guest operating system dan browse ke dari Y (atau drive letter lainnya bergantung dari mapping).

v  Menu setting juga dapat digunakan untuk mengedit nilai-nilai lain seperti besar memory etc.

Note:

1.     USB Drive tidak didukung oleh virtual PC!

2.     Ukuran file virtual PC cukup besar, bahkan sudah mencapai 1,4 gb padahal baru windows yang diinstall

ETHERNET

Xerox Ethernet An earlier version was issued in 1975 and designed to connect 100 computers at a speed of 2.94 megabits per second over one kilometer long cable.
Design has become such a success in that period so that Xerox, Intel and Digital Equipment Corporation (DEC) issued a 10Mbps Ethernet standard that is widely used in current computer networks. In addition, terdepat speed 100Mbps Ethernet standard, known as Fast Ethernet.
Origin Ethernet WAN stems from a development at the University of Hawaii at the end of 1960 plants known as "ALOHA". The university has a campus wide geographical area and willing to connect computers that are spread across the campus into a campus computer network.
Ethernet technology standardization process finally approved in 1985 by the Institute of Electrical and Electronics Engineers (IEEE), with a standard known as Project 802. The next IEEE standards adopted by the International Organization for Standardization (ISO), making it an international standard and are intended to form a global computer network. Due to its simplicity and reliability, Ethernet can survive until today, and even into the network architecture of the most widely used.
Ethernet Types
If seen from the speed, Ethernet is divided into four types, namely as follows:

    * 10 Mbit / sec, which is often referred to as Ethernet only (standard used: 10Base2, 10BASE5, 10BaseT, 10Base-F)

    * 100 Mbit / sec, which is often referred to as Fast Ethernet (standard used: 100BaseFX, 100BaseT, 100BaseT4, 100BaseTX)

    * 1000 Mbit / sec or 1 Gbit / sec, which is often referred to as Gigabit Ethernet (standard used: 1000BaseCX, 1000BaseLX, 1000BaseSX, 1000BaseT).

    * 10 000 Mbit / sec or 10 Gbit / second. This standard has not been widely implemented.
How it works
Ethernet specifications define the functions that occur at the physical layer and data link layer in the network reference model of seven layers of OSI, and how making the data packet into the frame before transmission over the cable.
Ethernet is a networking technology that uses Baseband transmission method that sends the signal serially one bit at a time. Ethernet operates in half-duplex mode, which means that every station can receive or send data but can not do both things. Fast Ethernet and Gigabit Ethernet can work in full-duplex mode or half duplex.
Ethernet media access control using Carrier Sense Multiple Access with Collision Detection to determine which station can transmit data at a specific time through the media used. In a network using Ethernet technology, every computer will "hear" first before "speaking", meaning they will see whether the network conditions are not there other computers that are transmitting data. If there is no computer that is transmitting data, each computer that will transmit data to try to take over the network to transmit the signal. Thus, it can be said that the network is using Ethernet technology is the basis of the network is based on those First-Come, First-Served, rather than delegate the control signal to the Master Station as in other network technologies.
If two stations to try to transmit data at the same time, then possibility of collision (collision / crash), which will result in these two stations to stop transmitting data, before finally trying to send it again at random intervals (as measured by units milliseconds). More and more stations in an Ethernet network, which will result in the number of collision and the greater the network performance will become worse. Ethernet performance is supposed to be 10 Mbit / sec, if the attached network node 100, generally only yield performance ranging from 40% to 55% of the expected bandwidth (10 Mbit / sec.) One way to tackle this is to use Ethernet switches to segment on an Ethernet network into multiple collision domain.
Ethernet Frame
Ethernet transmits data via the network cable in the form of packets of data called the Ethernet Frame. An Ethernet frame has a minimum size of 64 bytes, and a maximum of 1518 bytes with 18 bytes of which are used as information about the source address, destination address, network protocol used, and some other information stored in the header and trailer (footer). In other words, the maximum amount of data that can be transmitted (payload) in a single frame is 1500 bytes.
Ethernet uses several methods to perform encapsulation of data packets into Ethernet frames, ie, as follows: Ethernet II (used for TCP / IP) Ethernet 802.3 (otherwise known as Raw 802.3 in a Novell network system, and is used to communicate with Novell NetWare 3:11 or previous versions) Ethernet 802.2 (also known as Ethernet 802.3/802.2 without subnetwork Access Protocol, and is used for connectivity with Novell NetWare 3.12 and later) SNAP Ethernet (also known as Ethernet 802.3/802.2 with SNAP, and made as compatibility with Macintosh systems running TCP / IP)
Unfortunately, each Ethernet frame format of the above are not mutually suitable / compatible with one another, making it difficult for network installation is heterogeneous. To fix this, do the configuration of a protocol via the operating system.
Topology
Ethernet can use any physical network topology (topology could be bus, ring topology, star topology or a mesh topology) and the type of cable used (can be a coaxial cable (can be Thicknet or thinnet), copper cable (UTP or STP cable) , or fiber optic cable). However, star topology is preferred. Logically, all Ethernet network using bus topology, so that one node will set a signal on the bus and the signal will flow to all other nodes connected to the bus.