Final answer:
The TCP/IP model is a five-layer network model used in computer networking.
Step-by-step explanation:
The subject of this question is the TCP/IP model, which is a five-layer network model used in computer networking. It is one of the key models for understanding how data is transmitted over the internet. The TCP/IP model consists of five layers: the Application layer, Transport layer, Internet layer, Network Access layer, and Physical layer.
The TCP/IP model is widely used in modern computer networks and is a fundamental concept in networking courses.
Keywords: TCP/IP model, computer networking, data transmission, layers.