TCP/IP Model Transmission control Protocol/Internet Protocol  Developed by DARPA(1970)-Defense Advanced Rese arch Project Agency  Can identify four layers Application 2. Host-to-Hos t (trans port) 3.Internet 4.Network Access  Network Access - Responsible for se nding and receiving packets  Internet - Provide s functions such as packaging, addres s ing, routing  Transport - Transportation and delivery of data packets  Application: Ability to acces s the servic es of the other layers TCP – Transmission Control Protocol Convert the informatio n into seg me nts It provide s se que nc es number for each segment to put se gment back into an order Will wait till the acknowledge me nt from receiving end 3-way hands hake to esta blish connection UDP – User Datagram Protocol Unreliable connection No 3-way hands hake Not respons ible to check the delivery of the packet to the destination No acknowle dge ment ...
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