Which of the following should a technician perform to verify the integrity of a file transferred from one device to another?

Rationale

Hashing should be performed to verify the integrity of a file transferred from one device to another.

Hashing creates a unique digital fingerprint of the file, which can then be compared before and after the transfer to ensure that the file has not been altered or corrupted during the process.

A (Authentication) YOUR ANSWER

Authentication verifies the identity of a user or device, ensuring that only authorized entities can access certain resources. While important for security, authentication does not ensure the integrity of the file itself; it simply confirms who is accessing it.

B (Obfuscation) YOUR ANSWER

Obfuscation refers to the practice of making something unclear or difficult to understand, often used in programming to protect code from being easily read. This technique does not verify file integrity; rather, it aims to hide the file's contents, which is not relevant when checking for corruption or alteration.

C (Hashing) CORRECT

Hashing generates a fixed-size string of characters (the hash) based on the file's content. If the file remains unchanged, the hash will be the same before and after transfer. This makes hashing an effective method for verifying that the file's integrity has been maintained throughout the transfer process.

D (Encryption) YOUR ANSWER

Encryption transforms data into a secure format that can only be read by someone with the appropriate decryption key. While it protects the file's contents from unauthorized access, it does not serve as a means to verify if the file has been altered during transfer.

Conclusion

Verifying the integrity of a file during transfer is best accomplished through hashing, which allows for direct comparison of the file's digital fingerprint. While other options such as authentication, obfuscation, and encryption play important roles in security, they do not specifically address the need to confirm that a file remains unchanged during its transfer. Hashing stands out as the most effective method for ensuring data integrity.

Which of the following should a technician perform to verify the integrity of a file transferred from one device to another?

Hashing should be performed to verify the integrity of a file transferred from one device to another.

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