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CCNA Security Exam Cram (Exam IINS 640-553) by Eric L. Stewart

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Exploring Network Security Basics and the Need for Network Security

In this section, we examine some of the key principles involved in creating a secure network. We establish building blocks that will be used in formulating an effective security policy. The principles are as follows:

Image    Open networks and knowledgeable attackers with sophisticated attack methods create the requirement for flexible, dynamic network security policies.

Image    Examine the CIA triad: confidentiality, integrity, and availability.

    Define data classification categories ...

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