Langkah-langkah menginstall virtual PC

Download microsoft virtual pc 2007 SPI,lalu di install.
Setelah selesai mendownload,lalu menginstall
Setelah selesai di install lalu jalankan microsoft virtual pc
Setelah mendapatkan wizard klik next
Pilih create virtual machine
Lalu pilih sebuah nama pilihan kita
Lalu pilih windows xp dari drop down list
Adjust ram menjadi 512 mb
Setelah wizard elesai,klik saja finish,setelah itu memasukkan windows xp cd kedalam cd room drive dan start virtual machine
Pastikan cd windows xp berada pada cd room drive dan start virtual machine
Setelah os terinstall waktunya menambahkan virtual machine additions klik pada menu actions dan pili install,lalu akan ada pemberitahuan warning klik saja continue dan lakukan install.setelah install selesai lakukan restart system.
sesudah itu kita telah selesai membuat sebuah virtual pc.

TCP/IP

TCP/IP is a two-layer program. The higher layer, Transmission Control Protocol, manages the assembling of a message or file into smaller packets that are transmitted over the Internet and received by a TCP layer that reassembles the packets into the original message. The lower layer, Internet Protocol, handles the address part of each packet so that it gets to the right destination. Each gateway computer on the network checks this address to see where to forward the message. Even though some packets from the same message are routed differently than others, they'll be reassembled at the destination.
TCP/IP uses the client/server model of communication in which a computer user (a client) requests and is provided a service (such as sending a Web page) by another computer (a server) in the network. TCP/IP communication is primarily point-to-point, meaning each communication is from one point (or host computer) in the network to another point or host computer. TCP/IP and the higher-level applications that use it are collectively said to be "stateless" because each client request is considered a new request unrelated to any previous one (unlike ordinary phone conversations that require a dedicated connection for the call duration). Being stateless frees network paths so that everyone can use them continuously. (Note that the TCP layer itself is not stateless as far as any one message is concerned. Its connection remains in place until all packets in a message have been received.)
Many Internet users are familiar with the even higher layer application protocols that use TCP/IP to get to the Internet. These include the World Wide Web's Hypertext Transfer Protocol (HTTP), the File Transfer Protocol (FTP), Telnet (Telnet) which lets you logon to remote computers, and the Simple Mail Transfer Protocol (SMTP). These and other protocols are often packaged together with TCP/IP as a "suite."
Personal computer users with an analog phone modem connection to the Internet usually get to the Internet through the Serial Line Internet Protocol (SLIP) or the Point-to-Point Protocol (PPP). These protocols encapsulate the IP packets so that they can be sent over the dial-up phone connection to an access provider's modem.
Protocols related to TCP/IP include the User Datagram Protocol (UDP), which is used instead of TCP for special purposes. Other protocols are used by network host computers for exchanging router information. These include the Internet Control Message Protocol (ICMP), the Interior Gateway Protocol (IGP), the Exterior Gateway Protocol (EGP), and the Border Gateway Protocol (BGP).