Task 5; The transport layer. A way the transport team uses to find out if a rece

Question

Task 5; The transport layer.

A way the transport team uses to find out if a received package is a duplicate or is not using sequence numbers. This opportunity is important for providing reliable transmission.
a) If different connections are not clearly separated, and the initial sequence number is selected based on time, which problems can occur and how?
b) How does the TCP reduce the problem? How can the problem occur despite it?
c) Propose a protocol extension that will significantly reduce the problem.

c) Propose a protocol extension that will significantly reduce the problem.

Explanation / Answer

Answer Transport Layer is very important layer which plays a vital role in data transfer . If we talk about it's basic functions then it accept the data and split the data in tiny units and later on it transfer these units to the Network layer after ensuring that all units reached on the other end perfectly .

While the data units reassembling happens by the help of sequence numbers.

a) if such scenario occures then multiple packets comes with same squence number and it become difficult to distinguish between two packets of data and information is not send reliabaly. it become defficult to find out lost data packets, so ultimatly information loss is their.

b)TCP protocol introduced for reducing this time sequencing problem. TCP protocol first set up the connection with server and receiver. it split chunk of data into and assign sequence no based on checkSum and other factor, so that no two diffrent packets have identical sequence no, after transmission of data through secure layer tcp reassembled the packets and send acknowledgement to sender.

if acknowledge is not recieved then data will be re transmitted.

TCP is highly reliable protocol but it require slightly more time than other protocol to make and check connection.

all the feature of tcp are not needed every time.

c) BIC TCP,CUBIC TCP,P-TCP,S-TCP,Fast TCP,HS-TCP these are some other protocols which are simply improvment in tcp. that solved time , complexity problems for tcp

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