Transmission Control
Protocol (TCP) Internet Protocol (IP) – What is It? Why Does it Matter?
Transmission Control Protocol definition: forms the connections among sender and receiver web computers to ensure the packets sent by one computer are received in the same sequence by the other, without any missing packets.
Basically it is produces the guidebook(TCP) to direct tourists(Packets of information) around the city in the most efficient manner.
Internet Protocol definition: Is the internet’s addressing formula that is responsible for the delivery of the packets.
TCP and IP work as one
mechanism
Before Transmission Control Protocol existed there was no universal method for breaking up the messages and sending them to the correct location. Picture packet switching (breaking up messages into small packets – making them easier to send) as a stamp; you can have a bunch of stamps to send out messages but if you don’t have a post office or set system to deliver those stamped messages, you are missing an important part of the messaging equation. TCP is the post office to packet switching. When packet switching was invented there was no universal post office to direct those packet switches to their final, final destination.
One can divide TCP/IP into four separate parts
1. Network Interface Layer: This layer puts the packets of information on networks and sends them from the networks. The network could be a LAN (Ethernet) or any other network technology.
2. Internet Layer: addresses, packages, and routes the messages on the INTERNET
3. Transport Layer: provides communication with applications, sequencing the packets to and from the applications
4. Application Layer: a bunch of applications that are given the ability to access the lower applications.
photo courtesy of : http://www.maran.com
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