Operating Systems Interview Questions
Questions Answers Views Company eMail

My solaris system has 16GB RAM and swap. /tmp is associated to swap. We use vmstat command to get used system memory. We observe that once we fill up /tmp, it reflects in vmstat command. My intention is only to get overall used memory in RAM. 1. Can you let me know the if there is a solaris command to just get used memory in RAM? 2. How is /tmp filling up associated to "free memory" in vmstat command?

2 3943

different between UDP and TCP

Oracle,

2 4199

1. How do you replace a failed boot disk under meta in solaris? Step by step explanation? 2. How do you remove meta only for the root slice? remaining slices should run under meta? 3. what you would do if you want to replace a slice using metareplace option? 4. what is the significance of 51% state database replicas in SVM? 5. what are the common errors you find in Solaris Volume manager? 6. You have a boot disk under svm, the machine fails to boot and remains in ok prompt? what could be the possible reason? 7. metastat -p shows a metavolume needs replacement. Metavolume is a single way mirror only. Actually you find disk and metavolumes are ok and I/O is happening to the filesystems… how will you remove the metareplace message that comes out of metastat. 8. How to create a shared disk group in VxVM? 9. What is the difference between private and public regions in Veritas Volume manager? 10. what would you do if the private region of a particular disk group is full? What are the design considerations for the size of private region in Vxvm disk group? 11. How to replace a corrupt private region? in vxvm 3.5 and greater versions… 12. How would you convert a volume from gen to fsgen? why should you do that? 13. How can you unencapsulate a boot disk in VxVM? 14. How to identify multiple paths for a disk. 15. What is the difference between Vxdmp and EMC powerpath? 16. vxdisk -o alldgs list o/p shows some disk groups in braces… What does that signify? 17. what are the various layouts that are available in VxVM? 18.What is a layered volume? how to create it using vxmake? 19.How to quickly mirror a volume, if the volume is empty? 20. How to grow a volume? 21. What is the difference between failing and failed disks? 22. How to replace a failed disk in Veritas? 23. Plex is in a disabled state. How will you recover? what are the steps to follow? 24.what is the difference between detached and disassociate state of plexes? 25. Whats the boot process of VxVM? 26. Whats the difference between SVM and VxVM? What would you recommend to your clients? why? 27.What are the various clusters you have worked on? 28. Which cluster is better VCS or Sun cluster? 29. Compare and contrast VCS and Sun Cluster. 30.how will you start VCS service? What are the configuration files in VCS? 31. How would switch a service group? 32. How would you freeze a service group? 33. What is a Split brain scenario ?

2 10867

How to use disk quotas in solaris (command mode) ? what is the procedure for how to allocate particular space to particular user

HP,

2 5887

Am using Mac OS 10.4.11 on an Imac (PPC) Internal hard disk got named disk0s3 and will not mount. What commands can be used in TERMINAL to rename the internal hard disk to C96?

2097

How to know what are the packages required for any service? Example: How to know what are the package required for send mail services. using any command it is passable are not?

OnMobile,

2 6163

User unable to login in server then how can u troubleshooting it? Example: server at Bangalore. in that server two users try to login in server. 1st user able to login. but second user unable to login so how can troubleshoot it ?

Oracle,

5 8615

User unable to login in server then how can u troubleshooting it? Example: server at Bangalore. in that server two users try to login in server from other place. 1st user able to login. but second user unable to login so how can troubleshoot it ?

Oracle,

1 5711

I have nortan antivirus but some of the virus it can't delete. how will i remove that virus without formating the system ?please help .

HCL,

3 4125

What is the difference between installation and configuration ?

2 38451

how will we take back up all computer in domain in single shot?

Airtel,

2 6603

their is a file1,file2 and i want to append file1 data to file2?

IBM,

9 12089

what are the alarms in solaris?

2683

what is the diff between ufslog and vxfslog?

1 4662

why we make plex offline online in vxvm?

2444


Un-Answered Questions { Operating Systems }

What is the main advantage of a linked list?

489


Differentiate linear from non linear data structure?

531


How long can you use windows 10 without activation?

454


How do I view a .dmp file?

496


What does awk stand for?

601






How do I restore windows 7 without a disk?

433


Is mac a linux or darwin?

450


What happens if you delete the system 32 folder?

470


What is entryset method in map?

466


What is difference between deadlock and starvation?

533


What is ulimit command?

600


How do you check if a port is listening in windows?

419


What does indexing do in windows?

487


Why arraylist is not efficient for manipulation?

443


Do you know what is linear search?

505