correct answer

LR Layer AT TR Application Layer A layer of the OSI model that provides interfaces that enable applications to request and receive network services. A layer of the OSI model where data can be encrypted and/or compressed to facilitate delivery. Platform-specific application formats are translated into generic data formats for transmission or from generic data formats into platform-specific application formats for delivery to the Application layer. A layer of the OSI model responsible for setting up, maintaining, and ending communication sequences (called sessions) across a network