Free CompTIA Network+ N10-008 Practice Question

The Presentation layer of the OSI model is responsible for data formatting and conversion operations. This includes translation of data formats (such as ASCII to EBCDIC), data encryption and decryption, as well as data compression and decompression. It ensures that the data presented to the Application layer is in a usable and understandable format. This layer serves as a translator between the data format used by the network and the format that the application understands. The incorrect options—Application layer and Session layer—are involved in different aspects of communication: the Application layer serves as the window for users and application processes to access network services, and the Session layer manages sessions between applications. The Data Link layer is incorrect because it is responsible for node-to-node transfer of data and deals with error checking and frame synchronization, not data presentation.