Answer Posted / sathyender
TCP is a connection-oriented protocol and it requires data
to be consistent at the destination and UDP is
connection-less protocol and doesn't require data to be
consistent or don't need a connection to be established with
host for consistency of data.
UDP packets are smaller in size. Can't be greater then 512
bytes. So any application needs data to be transffered
greter than 512 bytes uses TCP
We often discuss why services use both the protocols i.e.
TCP and UDP. These services can also realy on TCP instead of
UDP because TCP is a connection-oriented protocol whereas
UDP is connection-less! then why use UDP?
For example, DNS uses both TCP and UDP for valid reasons
described below. Note that UDP messages are not larger than
512 Bytes and are trucncted when greater than this size. So
DNS uses TCP for Zone transfer and UDP for name queries
either regular (primary) or reverse. UDP can be used to
exchange small information whereas TCP must be used to
exchange information larger than 512 bytes. If a client
doesn't get response from DNS it must retransmit the data
using TCP after 3-5 seconds of interval.
Is This Answer Correct ? | 95 Yes | 9 No |
Post New Answer View All Answers
Explain what is subneting?
What is public ip?
How do you ipconfig all?
Explain how is data send by ip layer?
What is semaphore os?
What are the 4 types of laws?
How do I check if a port is open?
Is there any training institute for network protocol testing / communication protocol testing / data-com protocol testing?
What is netsh interface?
What happens when multiple applications open multiple tcp connections?
How a process can be terminated?
What is the difference between name based and ip based virtual hosting?
What port is 23?
Why shared memory is faster than message queue?
Tell me what is the difference between public and private ip?