Comprehensive and Detailed Step-by-Step Explanation:
SFTP (Secure File Transfer Protocol)is the most secure option for transferring data over the internet, as it encrypts both commands and data, ensuring confidentiality and integrity.
* SFTP (Correct Answer - C)
* Uses SSH (Secure Shell) for encryption.
* Provides authentication and encryption for secure data transfers.
* Example:A company uses SFTP to securely transmit payroll files to a third-party processor.
* UDP (Incorrect - A)
* Faster but lacks encryption and data integrity checks.
* HTTP (Incorrect - B)
* Transfers data in plaintext and is vulnerable to interception.
* RDP (Incorrect - D)
* Used for remote desktop access, not secure file transfers.
References:
* ISACA CISA Review Manual
* NIST 800-52 (Guidelines for Transport Layer Security)