Functions of OSI and TCP/IP Layers Q.36

0. In a packet switching network, packets are routed from source to destination along a single path having two intermediate nodes. If the message size is 24 bytes and each packet contains a header of 3 bytes, then the optimum packet size is

Answer
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Option : D
Explanation : Consider optimum packet size which required minimum number of packet and does not waste any space.
Here consider each packet header because they are all work on packet switching network. 3 bytes is header size;
9 – 3 = 6 is data size
24/6 = 4 are the required packet
For case 1 : 24 packets are required
For case 2 : 8 packets are required
For case 3 : 6 packets are required

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