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/OS-1-quiz.md

@@ -56,6 +56,62 @@ B. Services
 C. System Information  
 D. Resource Monitor  
 
+8. Which Windows edition includes Hyper-V for running virtual machines?
+
+A. Windows Home  
+B. Windows SE  
+C. Windows IoT  
+D. Windows Pro  
+
+9. Which command shows the current computer name?
+
+A. `whoami`  
+B. `hostname`  
+C. `winver`  
+D. `msinfo32`  
+
+10. What is the minimum RAM for a 64-bit Windows 11 installation?
+
+A. 256 MB  
+B. 512 MB  
+C. 4 GB  
+D. 16 GB  
+
+11. Which command lists all running processes with their process IDs?
+
+A. `netstat`  
+B. `tasklist`  
+C. `gpupdate`  
+D. `diskpart`  
+
+12. A technician needs to verify if a PC is 32-bit or 64-bit before installing software. Which tool provides this?
+
+A. Disk Cleanup  
+B. File Explorer Options  
+C. System Information or Settings > System > About  
+D. Windows Update only  
+
+13. Which command shows detailed Group Policy results and user/computer settings?
+
+A. `hostname`  
+B. `winver`  
+C. `gpresult /r`  
+D. `chkdsk`  
+
+14. Which Windows edition is sold only through OEM channels and is tied to the hardware it ships on?
+
+A. Enterprise  
+B. Pro  
+C. Home (OEM)  
+D. Education  
+
+15. Which command shows current IP configuration including IPv4 address and subnet mask?
+
+A. `ping 127.0.0.1`  
+B. `ipconfig`  
+C. `hostname`  
+D. `tracert`  
+
 ## Answer Key For Instructor
 
 1. B
@@ -65,3 +121,11 @@ D. Resource Monitor
 5. B
 6. D
 7. C
+8. D
+9. B
+10. C
+11. B
+12. C
+13. C
+14. C
+15. B