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In this section we are going to cover some security concepts that you should be familiar with for the

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CCN a cyber ops exam defense in depth is the concept of having multiple layers of security protection.

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For example if your network firewall is mis configured or fails then and points local firewall could

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be used as a backup defense method.

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To identify how and where to implement the strategy.

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You can use what's called an onion diagram an onion diagram helps to organize the different layers of

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a network identify risks and decide where to implement security policies.