Chapter Summary

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If you found the information in this chapter a bit overwhelming, you are not alone. This is considered the second most difficult chapter in this book. If you found the information in the chapter fundamental, you should consider broadening your knowledge of the topics discussed with such tools as the Internet and reputable security books that specialize on the individual items discussed in this chapter.

At this point, you should know the following at the very least:

• Understand the seven layers of the OSI reference model and what actually takes place at each level.

• Be able to identify and describe various network topologies and the cabling used for each.

• Be able to define security-related protocols and have a basic understanding of the required and unnecessary services.

• Understand the most popular network countermeasures that can be implemented to protect a network from possible intrusion and attacks.

• Have a basic understanding of network devices such as repeaters, hubs, routers, and bridges.

• Understand media security procedures and security baselines.

If you want to pass this newly developed exam and acquire this important certification that is considered in high demand, the time to focus is now! Please use the knowledge you have gained from this chapter to best answer the review questions that follow.

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