Answer to Question #302911 in Computer Networks for Tege

Question

7. a) compare the TCP header and the UDP header. List the fields India the TCP header that are not present in UDP header. Give the reason for their absence.

Answer 1

The fields that are absent in the UDP but present in TCP are the acknowledge, sequence and Windows fields. The reason why the fields are absent in UDP is because TCP uses acknowledge flags to make an established reliable connection between a client and server. Since there's no sequencing of data transmitted in UDP it will have a fixed header filed of 8bytes while TCP will have a variable header length of 20 bytes as it relies on sequence number to keep track of every packets received so as to provide reliability in transport which in UDP is not necessary.