What are the three elements of a network protocol?

1, semantics. Semantic interpretation of the meaning of each part of control information. It specifies what control information needs to be sent, as well as what actions to complete and what kind of response to make.

2. grammar. Grammar is the structure and format of user data and control information, and the order in which data appear.

3. Time sequence. Time series is a detailed description of the sequence of events. (also known as "synchronization").

People vividly describe these three elements as: what does semantics do, how does grammar do, and time sequence is the order of doing.

Extended data:

Advantages of network seven-layer protocol:

1, which is convenient for people to discuss and understand many details of the protocol.

2. Standardize the interfaces between layers, allowing different products to provide only a part of the functions of each layer (such as routers on the first to third layers) or only a part of the protocol functions. (such as Microsoft TCP/IP in Win95)

3. Create a better integrated environment.

4. Reduce complexity and allow easier programming changes or quick evaluation.

5. Make mistakes with the opening and closing of each layer.

6. The lower layer provides services for the higher layer.

7. Divide the complex network into more manageable layers.

Baidu Encyclopedia-Network Seven-Layer Protocol

Baidu Encyclopedia-Network Protocol