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CYB 205 Infrastructure Administration
Q: Sally's organization needs to be able to prove that certain staff members sent emails, and she wants to adopt a technology that will provide that capability without changing their existing email system. What is the technical term for the capability Sally needs to implement as the owner of the email system, and what tool could she use to do it?
A: Nonrepudiation; digital signatures
Explanation: Sally needs to provide nonrepudiation, the ability to provably associate a given email with a sender. Digital signatures can provide nonrepudiation and are her best option.Answer B is incorrect. IMAP (Internet Message Access Protocol) is a mail protocol. Integrity means that something is whole and complete and that its parts are smoothly joined together.Answer C is incorrect. Repudiation means denial of the truth or validity of something and encryption is used for providing confidentiality.Answer A is incorrect. Authentication is the act of examining or testing the identity credentials provided by a subject that is requesting access. DKIM (DomainKeys Identified Mail) is a tool for identifying domains that send an email.
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