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Which of the following security mechanisms is MOST effective in protecting classified data that have been encr

Which of the following security mechanisms is MOST effective in protecting classified data that
have been encrypted to prevent disclosure and transmission outside the organization’s network?

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A.
Configuration of firewalls

B.
Strength of encryption algorithms

C.
Authentication within application

D.
Safeguards over keys

Explanation:

If keys are in the wrong hands, documents will be able to be read regardless of where they are on
the network. Choice A is incorrect because firewalls can be perfectly configured, but if the keys
make it to the other side, they will not prevent the document from being decrypted. Choice B is
incorrect because even easy encryption algorithms require adequate resources to break, whereas
encryption keys can be easily used. Choice C is incorrect because the application “front door”
controls may be bypassed by accessing data directly.


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