Which of the following protocols/applications does not facilitate data…

The correct answer is Option C (DNS using DNSSEC). The question asks which protocol does not facilitate data encryption during transmission. HTTPS uses TLS/SSL to encrypt web traffic, ensuring confidentiality between the client and server. SFTP (Secure File Transfer Protocol) operates over SSH, which provides a secure channel with built-in encryption for file transfers. SNMPv3 also includes security features that support data privacy through encryption algorithms, unlike its predecessors.\nHowever, DNSSEC (Domain Name System Security Extensions) is designed specifically to provide authentication and data integrity for DNS records. It uses digital signatures to verify that the response comes from an authoritative source and has not been tampered with. Crucially, DNSSEC does not encrypt the actual data payload being transmitted; it only ensures that the data is authentic. Therefore, unlike HTTPS, SFTP, and SNMPv3, DNSSEC does not facilitate data encryption during transmission over the network.