Networking Self-Teaching Guide: OSI, TCP/IP, LANs, MANs, WANs, Implementation, Management, and Maintenance

Appendix B. Exercise Answers

Chapter 1 Exercises

1. The network used exclusively by the University of Texas is an example of a campus area network (CAN). Note that LAN and MAN are also appropriate responses.

2. What are the names of the layers in the OSI reference model?

   • Layer 7—Application

   • Layer 6—Presentation

   • Layer 5—Session

   • Layer 4—Transport

   • Layer 3—Network

   • Layer 2—Data Link

   • Layer 1—Physical

3. List at least five applications and/or utilities that use TCP/IP.

   • Telnet

   • FTP

   • SMTP

   • POP

   • SNMP

4. What are the two types of network relationships?

   • Connectionless

   • Connection-oriented

5. Explain the difference between a client/server network relationship and a client/server database system.

   In both cases, the server provides the data requested by a client, but in a database system, the client node has to use its own resources to format and view the data retrieved.

6. What is the 1822 protocol?

   Specifies the method to connect a host computer to an ARPANET router.

7. What are the three types of standards? Do a search on the Internet to see if you can find at least one of each standard type.

   • Proprietary

   • Open

   • De facto

8. The 802.11n standard supports an operating frequency of 2.4 GHz and 5 GHz. The maximum data rate for 802.11n is 600 Mbps. 802.11n reaches a maximum indoor range of 70 meters and an outdoor range of 250 meters.

9. True or false: The Application layer of the OSI model concerns itself with the application/user interface on a PC.

   True

10. In this chapter, we listed seven reasons why TCP/IP has grown to be the "method of choice." What are these ...