A patch is a piece of code issued by a vendor to correct a specific flaw-such as a software bug or security vulnerability-in an existing application or operating system. Its goal is to remediate the identified problem and reduce the attack surface. By contrast, a major version upgrade adds new functionality, a backup image is used for recovery rather than remediation, and a configuration baseline defines standard settings but does not directly fix code-level defects.
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ISC2 Certified in Cybersecurity (CC)
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