Because of the overhead, TCP should not be used as a transport mechanism if the user or endpoints do not require reliable delivery, but are more interested in speed than quality.
TCP
It does. see the tcp video tutorials
HTTP works over a TCP connection.HTTP works over a TCP connection.HTTP works over a TCP connection.HTTP works over a TCP connection.
You should use "netstat":netstat -p TCP
Aknowlagement
Yes, it does.
No, TCP/IP is the not the only protocol used in the world, but it is certainly one of the most popular. Older networks may still use IPX/SPX (Novell) which is a competitor to TCP/IP. Mainframes use SNA or LU6.2 protocols which are very different from TCP/IP. Appletalk is also a competitor to TCP/IP.
Server Message Block (SMB)( Explanation ) When NetBIOS is disabled, SMB runs over TCP/445. Kerberos runs on TCP/User Datagram Protocol (UDP)/88. RPC runs on TCP/135. HTTPS runs on TCP/443.
No it uses UDP packets.
UDP does not require as much resources as TCP but in the same time, it does not insure delivery of packets.
Telnet use port number 23,and connected to TCP
a tcp header contains the information of the source and destination networks and well as what port to access with out it the packet would not know where to go