Chapter One. Domain 1.0: Network Security
The easiest way to keep a computer safe is by physically isolating it from outside contact. With the way organizations do business today, this is virtually impossible. We have a global economy and our networks are becoming increasingly more complex. Domain 1 of the Security+ exam requires that you are familiar with securing the devices on the network. To secure devices, you must also understand the basic security concepts of network design. Be sure to give yourself plenty of time to review all these concepts. The following list identifies the key areas from Domain 1.0 (which counts as 21% of the exam) that you need to master:
• Explain the security function and purpose of network devices and technologies ...
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