4.2 Packet Switching Technology

In the picture computer a wants to send a message to computer b while computer c wants to send a message to computer d.This is how computers use Packet Switching Technology. Concurrent data transmission is used to send information through a server. As this information is sent over the server a client can access the information by requesting the information that they need. These computers are connected through a router which gives them an IP address. This is possible because a data packet has been conformed to IP specification. TCP/IP is the protocol used to help all this become possible. The TCP or Transmission Control Protocol breaks down the information into packets and transfers the data from computer to computer. TCP also helps to identify if there is any information that has been sent more than once or missing. If any information is missing the TCP will send to receive it. IP or Internet Protocol defines the data and tells the router which IP address to send the information to.