Certified Information Systems Security Professional (CISSP) Practice Exam 2025 – All-in-One Guide to Mastering Your Certification!

The Transport Layer is a crucial component of the OSI model, serving as the facilitator of data transfer between devices across a network. It is responsible for providing reliable data transfer services to the upper layers, ensuring that data is transmitted accurately and in the correct sequence. The Transport Layer connects the Application Layer above it and the Network Layer below it.

In this context, the Application Layer interacts with end-user applications and relies on the Transport Layer to manage the delivery of data. The Transport Layer, in turn, depends on the Network Layer to handle the routing of packets and the establishment of connections across the network infrastructure. This layered approach allows for modular design and easier troubleshooting since each layer can focus on its specific role in the data communication process.

Other choices reflect incorrect associations of layers within the OSI model, missing the critical relationship of how the Transport Layer serves as a bridge between the Application Layer and the Network Layer. Understanding these connections is vital for students preparing for the CISSP exam, as it reinforces knowledge of how data is managed and transmitted in networking contexts.