Each packet carries the address of the intended recipient. Each computer has a unique address. It works rather like the postal system.
UDP is a Transport layer protocol or fourth layer protocol. UDP is a connection less protocol used in transport layer. UDP header have four fields in total .
In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.
8 bytes
both tcp and udp
Did you try Wireshark?
A UDPheader contains four 16-bit fields. They are the source port, destination port, length, and checksum -- in that order.
The sequence number, acknowledge number, and Window fields.
UDP,Frame,IP
in tcp header (32 bits) we have a field that is called options and padding that has variable in length and the header length shows the actual header size i.e size of 20 octets+size of options and padding field and in UDP we dont have any field like that and its header is fixed of 8 OCTETS (32 bits header size) refrence: WIRELESS COMMUNICATIONS AND NETWORKS by William Stallings Second Edition pg 91(see fig)
anonymous systems
souce and destination ports