220-1102 Question #77: Real Exam Question with Answer & Explanation

Question

Upon downloading a new ISO, an administrator is presented with the following string: 59d15a16ce90cBcc97fa7c211b767aB Which of the following BEST describes the purpose of this string?

Options

• AXSS verification
• BAES-256 verification
• CHash verification
• DDigital signature verification

Explanation

The provided alphanumeric string is a hash, used to verify the integrity of the downloaded ISO file by ensuring it hasn't been tampered with during transit or corrupted.

Common mistakes.

• A. XSS (Cross-Site Scripting) verification relates to web application security and preventing script injection, not file integrity.
• B. AES-256 is an encryption algorithm, not a verification method represented by a public string for file integrity.
• D. Digital signature verification uses cryptographic keys to verify the sender's identity and file integrity, but the string itself is a hash, which is part of a digital signature process, not the signature itself, and hash verification is a more direct description of its standalone purpose.

Concept tested. File integrity verification (Hashing)

Reference. https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/get-filehash?view=powershell-7.4

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