This document defines TCP, IP, and UDP. TCP provides reliable, ordered transmission of data and is connection-oriented. It is used for applications like web browsing. IP is connectionless and routes packets to the correct destination. UDP sends short, unreliable datagrams and is used for applications like video games that prioritize speed over reliability. The key difference between TCP and UDP is that TCP provides ordered, error-checked delivery while UDP is faster but unreliable.

1. Introduction of
TCP, IP & UDP
Rahul kundu
6th sem, IT

2. content
 Define TCP
 Define IP
 Define UDP
 Difference between TCP & UDP

3. Define TCP
 TCP is one of the core protocols of the
internet protocol suite(IP).
 TCP stands for “transmission control protocol”
 TCP provide reliable, ordered & error-checked
delivery of a stream of octets between
program running on computer connected to a
local area network, intranet or the public
internet.

4. Define TCP cont….
 It is resides at the transport layer.
 Web browsers use TCP when they connect
to servers on the world wide web & it is
used to deliver email & transfer files from
one location to another.
 TCP uses a fixed connection i.e. it is a
connection oriented protocol.

5. Define TCP cont….
 TCP is for communication between
applications.
 If one application wants to communicate
with another via TCP, it sends a
communication request must be sent to
an exact address after a “handshake”
between the two applications, TCP will set
up a “full duplex” communication between
the two applications.

6. Define TCP cont….
 The “full duplex” communication will
occupy the communication line between
the two computer until it is closed by one
of the two application.

7. OSI model and TCP/IP model

8. Define IP
 IP stand for “internet protocol”.
 IP is “connection less” communication
protocol.
 IP is for communication between
computers.

9. Define IP cont….
 IP doesn’t occupy the communication line
between two computers IP reduces the
need for network lines. each line can be
used for communication between many
different computer at same time.
 With IP, message are broken up into small
independent “packets” & sent between
computer via the internet.

10. Define IP cont….
 IP is responsible for “routing” each packet
to the correct destination.

11. Define UDP
 UDP stands for “user datagram packet”.
 UDP is part of the internet protocol suite
used by program running on different
computer on a network.
 UDP is used to send short message called
datagram but overall.

12. Define UDP cont…
 It is an unreliable connection less
protocol.
 UDP is officially defined in RFC 768 & was
formulated by David P. Reed.
 UDP is an open-system inter-
connection(OSI) transport layer protocol
for client-server network application.

13. Define UDP cont…
 It is used for data transferring.
 UDP is a known as a “stateless” protocol
meaning it doesn’t acknowledge that the
packets being sent have been received.
 UDP is widely used in video-conferencing
& real-time computer games.

14. Define UDP cont…
 UDP network traffic is organized in the
form of datagrams, which comprise one
message units. The first 8 bytes of a
datagram contain header information
while the remaining bytes contain
message data.

15. Define UDP cont…
 A UDP datagram
header contains 4
fields of 2 bytes
each:-
 Source port
number
 Destination port
number
 Datagram
size(length)
 Checksum

16. Difference between TCP & UDP
S.N Parameter TCP UDP
1. Acronym for Transmission control
protocol
User datagram
protocol
2. Connection Connection oriented
protocol
Connection less
protocol
3. Usage TCP is suited for
application that
require higher
reliability &
transmission time is
relatively less
critical.
UDP is suitable for
application that
need fast, efficient
transmission, such
as games, UDP
stateless nature is
also useful for
servers that

17. Difference between TCP & UDP
cont..
S.N Parameter TCP UDP
Answer small quires
from huge number
of clients.
4. Ordering of data
packets
TCP rearranges
data packets in the
order specification.
UDP has no inherent
order as all packets
are independent of
each other.
5. Speed of
transfer
Slower speed than
UDP
Faster than TCP (no
error checking)

18. Difference between TCP & UDP
cont..
S.N Parameter TCP UDP
6. Reliability Absolute guarantee
that data
transferred
remains intact &
arrives in the order
in which it was
sent.
There is no
guarantee that the
message or packets
sent would reach at
all.
7. Header size TCP header size is
20 byte
UDP header size is 8
byte

19. Difference between TCP & UDP
cont..
S.N Parameter TCP UDP
8. Stream oriented:-
data transmitted as
a virtual stream of
bytes
Message oriented:-
data transmitted as
individual data
packets called
datagram.
9. Weight Heavy weight Lighter weight
10. Data flow Flow control No flow control

20. Difference between TCP & UDP
cont..
S.N Parameter TCP UDP
11. Error checking Error check No error check
12. Acknowledgement Acknowledgement
Segment
No
acknowledgement
13. example HTTP, HTTPs, FTP,
SMTP, TELNET
DNS, DHCP, TFTP,
SNMP, RIP, VoIP

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