CompTIA Network+ Review Guide, 5th Edition

AppendixAnswers to Review Questions

Chapter 1: Domain 1.0: Networking Fundamentals

1. B.  The Presentation layer is responsible for encryption and decryption services. The Presentation layer is also responsible for compression and decompression and translation services. The Application layer is where APIs exist, and it also serves as the layer that communicates with the user. The Session layer provides dialogue control for applications. The Transport layer is where TCP and UDP protocols segment data for transmission.

2. D.  The Data Link layer provides the framing of data for transmission on the physical media. The Application layer is where APIs exist, and it also serves as the layer that communicates with the user. The Physical layer is where ...