Which upgrade option involves erasing the existing MST and creating a new copy from TST or PRD?

• A. Upgrade
• B. Rebuild
• C. Refresh
• D. Migrate

Answer: (C)

Refreshing is the operation that resets the current MST by wiping it clean and provisioning a fresh copy from a trusted baseline, such as a template from Test (TST) or Production (PRD). This matches the idea of erasing the existing MST and creating a new copy derived from a known-good source, ensuring the environment aligns with the latest validated state in TST or PRD.

This approach is used when you want to remove drift, corruption, or unwanted changes and start over from a clean, verified baseline. In contrast, upgrading updates software without wiping the existing setup; rebuilding typically starts from a base image rather than a specific TST/PRD baseline; and migrating moves data and configuration to a different environment rather than re-provisioning the current instance from a template.