Exam SY0-701 Topic 2 Question 156 Discussion

Actual exam question for CompTIA's SY0-701 exam
Question #: 156
Topic #: 2
Which of the following should a technician perform to verify the integrity of a file transferred from one device to another?

Suggested Answer: C Vote an answer

Comprehensive and Detailed Explanation From Exact Extract:
Hashing is the process used to verify file integrity. When transferring a file between devices, a hash value (such as SHA-256) is generated before the transfer and then recomputed afterward. If the two hash values match, the file has not been altered, corrupted, or tampered with during transmission.
Authentication (A) verifies identity, not file integrity. Obfuscation (B) hides meaning but does not detect modification. Encryption (D) protects confidentiality but does not guarantee integrity unless combined with hashing or digital signatures.
CompTIA Security+ SY0-701 covers hashing under cryptographic functions used for integrity verification.
Hash algorithms ensure that even a single byte change results in a completely different hash value (the avalanche effect). This makes hashing the standard method for verifying the integrity of transferred files, software downloads, backups, and system images.

by Mabel at Oct 06, 2026, 06:41 PM

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