Chapter 12. Practice Exam

1: Which of the following best describes the OSI reference model? Choose all that apply.
  1. The OSI model is just a reference model and is not actually a protocol itself.

  2. The OSI model is made up of five layers.

  3. The abbreviation OSI stands for Open Systems Interface.

  4. The OSI model is made up of seven layers.

A1: A, C, D. The OSI model is only a reference model for protocol developers, it is not a protocol itself. The abbreviation OSI stands for Open Systems Interface, and the OSI model is made up of seven layers (Application, Presentation, Session, Transport, Network, Data Link, and Physical).
2: Which of the following layers ...

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