________are rules that exist at several levels in a telecommunication connection.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Protocol
- Protocols are rules that exist at several levels in a telecommunication connection. Protocols define the format, timing, sequencing, and error control of data transmission between devices or systems in a network.
- They ensure that data is transmitted and received accurately and consistently, enabling communication between different devices and platforms.
- Protocols can operate at various layers of the OSI (Open Systems Interconnection) model, which is a conceptual framework that standardizes the functions of a telecommunications or networking system into seven distinct layers.
- Each layer may have its own set of protocols to manage specific aspects of communication.