Tell about the defect life cycle.

1. New: The defect has been discovered and registered.
2. Open: The defect is confirmed and is in progress or awaiting assignment.
3. Assigned: The defect has been assigned to a specific developer for fixing.
4. Resolved/Fixed: The developer believes the defect has been fixed and is ready for testing.
5. Closed: The tester has confirmed the defect has been fixed.
6. Reopened: The tester found that the defect was not fixed or has reappeared.
7. Deferred/Postponed: The defect fix has been postponed until the next or a subsequent release.
8. Rejected/Invalid: A decision has been made not to fix the defect (e.g., it is not reproducible, not a defect, or a duplicate).

The lifecycle may vary slightly depending on the error tracking system used (Jira, Bugzilla, etc.) and the team's processes.