Focus Questions Exercise Chapter 2 Name:

Date: Class:

Cisco Exercises - Semester 1 - Networking Fundamentals

Chapter 2 The OSI Model

1. Briefly describe six reasons why a layered network model is used in Internetworking?

2. From memory, list the seven layers of the OSI model.

• Layer 7

• Layer 6

• Layer 5

• Layer 4

• Layer 3

• Layer 2

• Layer 1

3. What is meant by the term "Peer-to-Peer Communication"?

4. Briefly describe the process of data encapsulation using the following terms: data, segment, packet, frame, bits.

5. Describe the information that is added at the data as it is encapsulated in the transport, network, and data link layers.

6. What is the OSI reference model?

7. Will networks built following the OSI model be identical?

8. What process does the OSI model describe?

9. Define medium.

10. What is the importance of the TCP/IP model?

11. How does the OSI model compare with the TCP/IP model?

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