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.
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.
tcp/ip
Both TCP and IP are subprotocols in the OSI model. IP is used for routing purposes, whereas TCP is used for transport control. If you are asking primarily about internetworking then it would be the IP protocol.
TCP/IP is the standard default.
The currently used TCP/IP is based on IP version 4. IP version 6 already exists, but its adoption is fairly slow for now.The currently used TCP/IP is based on IP version 4. IP version 6 already exists, but its adoption is fairly slow for now.The currently used TCP/IP is based on IP version 4. IP version 6 already exists, but its adoption is fairly slow for now.The currently used TCP/IP is based on IP version 4. IP version 6 already exists, but its adoption is fairly slow for now.
tcp/ip
TCP (also sometimes called TCP/IP)
TCP/IP first
tcp/ip
TCP/IP
Tcp/ip
You wouldn't use TCP/IP in a network that doesn't support it for other devices, such as a mixed legacy mainframe environment with PC systems. In today's world, there is rarely a situation where TCP/IP should not be used because it is such a common protocol across the world.