SNMPv3 provides enhanced security features over which versions?

SNMPv3 indeed provides enhanced security features specifically over SNMPv1 and SNMPv2. The primary advances in SNMPv3 include authentication, encryption, and access control, which are not present in the earlier versions.

While SNMPv1 included basic functionalities for monitoring network devices, it lacked significant security mechanisms, allowing for data transmission in clear text, making it vulnerable to interception. SNMPv2 introduced some improvements, such as additional protocol operations and bulk data retrieval, but still did not implement strong security measures.

In contrast, SNMPv3 incorporates mechanisms like User-Based Security Model (USM) for authentication and privacy, and View-Based Access Control Model (VACM) to manage access permissions, making network management much more secure. Therefore, the assertion that SNMPv3 offers enhanced security features over SNMPv1 and SNMPv2 is accurate, highlighting its role in facilitating safe and efficient network management.