quizzes: expand all 35 quizzes to 15 questions each

OPS-1 through OPS-10, OS-2, OS-3 went from 5 → 15.
OS-1, OS-4 through OS-11, SEC-1 through SEC-11, TRB-1 through TRB-4 went from 7 → 15.
Questions cover exam-weight scenarios not duplicated from original content.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

quizzes/OPS-2-quiz.md

@@ -42,6 +42,76 @@ B. Document and review it according to policy
 C. Ignore user impact  
 D. Disable ticketing  
 
+6. Who typically reviews and approves significant changes to production systems?
+
+A. A random end user  
+B. A change advisory board (CAB)  
+C. The printer technician  
+D. The asset tag department  
+
+7. A change causes unexpected failures. What should the team execute immediately?
+
+A. Create a new SLA  
+B. Order new hardware  
+C. Execute the rollback plan  
+D. Disable all accounts  
+
+8. What must be documented BEFORE implementing a change?
+
+A. The post-change menu  
+B. The scope, impact, risk, and rollback steps  
+C. The screen brightness setting  
+D. The toner color  
+
+9. Which type of change bypasses the normal approval process due to urgency?
+
+A. Standard  
+B. Minor  
+C. Emergency  
+D. Scheduled  
+
+10. A technician applies a patch without getting approval. What type of issue is this?
+
+A. Authorized standard change  
+B. Scheduled maintenance  
+C. Unauthorized change  
+D. SLA renewal  
+
+11. Why is a maintenance window important for change management?
+
+A. It eliminates the need for documentation  
+B. It minimizes impact by scheduling changes during low-usage periods  
+C. It bypasses CAB review  
+D. It removes rollback requirements  
+
+12. A change was completed successfully. What should happen next?
+
+A. Mark it as pending and leave it  
+B. Document the outcome and close the change request  
+C. Skip documentation  
+D. Delete all backup records  
+
+13. What is the purpose of a change request form?
+
+A. To track personal leave  
+B. To document and justify the proposed change before implementation  
+C. To store printer settings  
+D. To replace the SLA  
+
+14. A server update will require a restart. Who should be notified in advance?
+
+A. No one  
+B. Affected users and stakeholders  
+C. Only the senior manager  
+D. Asset inventory vendors only  
+
+15. Which risk does poor change management most commonly introduce?
+
+A. Reduced ticket counts  
+B. Faster user response times  
+C. Unplanned outages and configuration drift  
+D. Lower licensing costs  
+
 ## Answer Key For Instructor
 
 1. B
@@ -49,3 +119,13 @@ D. Disable ticketing
 3. A
 4. D
 5. B
+6. B
+7. C
+8. B
+9. C
+10. C
+11. B
+12. B
+13. B
+14. B
+15. C