Encrypt Backup Files: Ensure that backup files are encrypted to protect sensitive?

Short answer: data. Use tools like gpg, or built-in encryption features (e.g., SQL Server Backup Encryption, PostgreSQL using pg_dump with -Fc and encrypting the output file).

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.