1. What does a NOS do? What are the major software parts of a NOS? What is the most important characteristic of a NOS? What are two NOS product names?

1. What does a NOS do? What are the major software parts of a NOS? What is the most important characteristic of a NOS? What are two NOS product names?

2. Describe CSMA, CD and CA. How does this work, in essence? Compare this to wireless LANS? How are they similar, and how are they different in terms of MAC?

3. Identify and describe the components of a data center.

4. What are two other names for NIC cards?

5. Describe in detail the difference between a hub and a switch in a LAN. Draw a diagram of each, and then mark it to show some of the points that you have made in your discussion of the differences. Discuss the difference between shared Ethernet and switched Ethernet in light of your answer.

6. Given a specific description of an Ethernet type, be prepared to answer questions regarding its speed, type of transmission and physical structure, e.g., 100BaseT, etc.

7. Define the three modes of switch operations.

8. What is the best practice Ethernet at the present time? Describe, and explain why this is best practice. What is the best practice wireless at the present time? Describe and explain why this is best practice. Would you install a wired or wireless Ethernet right now? Describe, if you were a manager, what your network of choice would be and why.

9. Discuss in detail how you would improve a LAN network’s performance, and what you would look for.

10. What is the difference in a logical and physical topology?

11. What are three reasons why Wi Fi has grown in popularity?

12. What is the “hidden node” problem, and what do you need to do about it in the best LAN design for wireless?

13. How might you as a network manager improve WLAN performance?

14. What devices are needed to build a wireless network?

15. Describe war-chalking, war-driving, and war-walking.

16. Compare a switched Ethernet to a wireless Ethernet. What are four essential differences between these two approaches to building a LAN? Give three reasons why a switched Ethernet is preferable to wireless. Three reasons why wireless might be preferred to switched?

17. Select three different types of IEEE 802.11 and describe when it might be best to use each one.

18. Discuss wireless network security. What are some of the critical problems, what are some of the defenses against these problems? List five potential weaknesses in security and five potential solutions to these perceived weaknesses.

19. Describe how you might secure your home wireless network.

20. What is the purpose of the e-commerce edge?