Topic: Computer Networks
Which of the following protocols/applications does not facilitate data encryption when data is sent over computer network using that protocol/application
- A. HTTPS
- B. SNMPv3 (Version 3)
- C. DNS using DNSSEC
- D. SFTP
Answer: C. DNS using DNSSEC
Explanation: DNSSEC (Domain Name System Security Extensions) provides data integrity and origin authentication to DNS by digitally signing records. However, it does not provide confidentiality; the DNS requests and responses remain in plaintext (unencrypted). HTTPS, SNMPv3, and SFTP all support data encryption.