Certified Healthcare Technology Specialist (CHTS) Process Workflow & Information Management Redesign Practice Exam

What is the correct order of the OSI model layers from top to bottom?

1. Application, Presentation, Session, Transport, Network, Data Link, Physical

2. Physical, Data Link, Network, Transport, Session, Presentation, Application

3. Application, Session, Presentation, Transport, Data Link, Physical, Network

4. Network, Transport, Presentation, Application, Data Link, Physical, Session

The correct answer is: Application, Presentation, Session, Transport, Network, Data Link, Physical

The OSI model consists of seven layers, each representing a different aspect of network communication. The correct order from the top layer, which is closest to the end-user, to the bottom layer, which is closest to the physical transmission of data, is: Application, Presentation, Session, Transport, Network, Data Link, and Physical. Starting with the Application layer, this is where end-user software operates and interacts with the network, providing services such as email or file transfer. The Presentation layer follows, which is responsible for translating data formats, ensuring that data is presented in a readable form. The Session layer enables sessions between applications, controlling the dialogues (connections) between computers. Continuing downwards, the Transport layer ensures that data is delivered accurately and in sequence from sender to receiver. The Network layer takes care of routing data across the network and handling addressing. The Data Link layer deals with node-to-node data transfer and error correction, and finally, the Physical layer represents the tangible hardware, managing the signal transmission over the physical medium. The other options present incorrect configurations of these layers, either misplacing certain layers or completely reversing their order, which leads to confusion and misrepresentation of how the model operates in real-world networking protocols. Understanding the OSI