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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 byte and each packet contains a header of 3 byte, then the optimum packet size is
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- 4
- 6
- 7
- 9
- 4
Correct Option: D
Packet switched network message = 24 byte
Header size = 3
Case 1: If packet size = 4
Then data = 4 – 3 = 1 byte only
So require 24 packets
Case 2: Packet size 6
Data = 6 – 3 = 3
Require 8 pakets.
Case 3:
Packet size = 7
Data = 7 – 3 = 4
Require 4
24 = 4 packets.
Case 4: Packet size = 9
Data = 9 – 3 = 6
Require 6 = 24 = 4 packets.
So min requirement is in case 4.
