Nt1310 Unit 3 Assignment 1 Error Analysis

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Assignment 2 QUESTION1 a) TCP data is 3200 TCP header is 160 bits IP header is 160 The maximum packet of size : 800 bits The maximum data size transmitted per packet is counted by : 2 x 160=320 800 – 320 = 480 Number of packet transmitted is 3200/480 = 7 packet transmitted. Bits received at network layer of destination network: 160+160=320 =3200+(320x7) =3740 bits received at network layer. b) There are a lot of error when information are stored and transmitted in OSI model. To detect error, the techniques of using error detection is adding extra bits to data to determine when error occurred. The most common of error detection is CRC (Cyclic redundancy checks) and checksum. In layer 2 and layer 4,error detection can occur at both data link and transport layer of the OSI reference model. All the seven layer of OSI model is operate separately.…show more content…
In TCP/IP reference model, it corresponds a part of link layer. The local delivery of frames is concerned with data link layer between devices on the same local area network. Data link also have two sub-layer which been describe IEEE – 802 LAN standards. LLC which also call as Logical Link Control and another one is MAC, also known as media access control. Data link layer is unaware that the transport layer exists. It will doing its own error check.The data have to under the packaging all the time and the protocols at the layer is responsible on it. Then, it sent out to other host of data link layer. When it gets there, it will verify as accurate. The various headers and the data trailer are stripped off one by one when the frame ascend the layer and reach the receiving process when it is on the receiving computer. Each layer is program if the transmission is horizontal although the actual data transmission is

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