Session Layer
These are called protocols - a standard set of rules for common communications across networks.
Communication protocols are the rules than govern use of different types of media.
The Simple Mail Transfer Protocol is used to coordinate the storage and transfer of email between users on a network. Other internet protocols include HTTP and FTP.
Network protocols provide mechanisms that enables communications between sysytems, clients, servers, websites etc. without protocola systems would not be able to communicate, share data etc.
Protocols in data communications serve as rules that govern how data is transmitted and received between devices. They facilitate the exchange of information by ensuring that devices can understand and interpret the data being sent, establish connections, and manage the flow of data. In essence, protocols enable devices to communicate effectively and reliably with each other in a standardized manner.
TCP and IP are examples of protocols - a common set of agreed upon rules for communications between networks and devices.
communications services. The oldest and still the most frequently used network communications services are mail services, which coordinate the storage and transfer e-mail between users on a network.
Hyper Text Transfer Protocol Secure [HTTPS]
Routing protocols are used by routers (RIP, EIGRP, OSPF) Routed protocols are the actual protocols on the wire (TCP/IP)
What is the difference between external and internal communications
A router that supports two or more communications protocols, such as IP and IPX. It is used to switch network traffic between different LANs located throughout the enterprise as well as to switch LAN traffic to WANs.
There are two types of Protocols according to mechanism:Routable & Non RoutableNon Routable protocols work on Broadcast & doesn't maintain tables whereas Routable (Routed) protocols are designed to work in larger networks & tables are maintained dynamically on Network devices.Internet is vast & constitutes multiple Networks. Routable Protocols route information across Internet devices between Source to Destination Network.