50 TOP AIX Interview Questions and Answers

List of top 50 most frequently asked aix interview questions and answers pdf download free

AIX Interview Questions and Answers List

  1. What levels of AIX have you worked with?
  2. What types of machines have you worked with?
  3. What applications have you used with AIX?
  4. Suppose that there are some users that need to run certain commands normally only accessible by root. How would you grant them access?
  5. The system is performing very slowly; you have discovered that this is due to an increasing number of defunct processes are being created. How can you determine the cause?
  6. You get a message that the system can’t fork any additional processes? What do suspect to be the problem?
  7. You’re running some commands and getting an error that says “srcmstr daemon is not running”. Obviously, it is, because the machine appears to be functional. What is the likely cause?
  8. How do you run 64-bit applications on AIX 4.3.3? On AIX 5.1? What else might you have to consider on an AIX 5 machine?
  9. Describe one situation where it might be appropriate to edit the ODM.
  10. Describe how to manually edit the ODM. What commands should be used?
  11. When might the savebase command be used?
  12. What key would you use at boot time to signal the machine to boot into service mode?
  13. What is the effect of setting the normal mode bootlist to cd0 first and hdisk0 second?
  14. A machine hangs at boot because the network is inaccessible or an NIS server is accessible. How can you recover?
  15. You are adding a number of new internal SCSI disks to a pSeries 680 and a new drawer of SSA drives. How does cfgmgr operate different when configuring each?
  16. After a reboot or after running cfgmgr, a particular disk is listed twice. Give some possible reasons why and how you might narrow them down.
  17. What considerations must you give when creating RAID-0 or RAID-1 disks in an SSA array?
  18. What’s the difference between RAID-0 and RAID-1?
  19. When using an SSA array, what are the tradeoffs to consider between using a large RAID-5 array and using LVM mirroring?
  20. How do you properly mirror rootvg to protect the OS from crashing should a disk fail?
  21. Why is it important to mirror non-rootvg paging spaces, and what might be the effect if this is not done?
  22. What kind of considerations can be made with regard to mirroring rootvg in a non-mission critical environment where maximizing disk space is important?
  23. Provide the steps to move a file system from one volume group to another WITHOUT recreating and restoring it.
  24. Why is directly editing /etc/filesystems, to change information for a file system, a bad idea?
  25. You can’t unmount a file system (AIX says it’s in use). How do you determine what process is keeping it open?
  26. The “df” command shows that the file system is 100% full, but “du” shows no files in the file system. Why, and how do you debug this?
  27. The “df” and “du” commands indicate that the file system is 50% full, but you notice that the total size of all files, as given by “ls” is greater than the size of the file system. How is this possible?
  28. What steps should you follow to replace a failed hdisk?
  29. Basic network configuration
  30. What file is used to tell AIX to use local /etc/hosts entries instead of DNS?
  31. There is a conflict between a machine’s IP address and the DNS entry. Unfortunately, the DNS server is a Win2K server managed by a little old lady who works once a week. How do you get around this?
  32. You’ve properly exported a file system on a server. You’ve properly set up the NFS file system definition on the client, and the proper daemons are running.
  33. What two options do you have to resolve this?
  34. What is resolv.conf used for?
  35. Your machines are in the xyz.com domain. You want to be able to look up hosts in the abc.com domain. What should you do so that the ping command will find a route to those hosts?
  36. Where is the default gateway stored in AIX? Where are other routes stored?
  37. How would you use SMIT to create scripts for future use?
  38. You’re using SMIT and are getting a strange error during its execution. How do you debug what SMIT is doing?
  39. A project manager claims that a system is CPU-bound. What commands do you run to verify this, and what sort of output are you looking for?
  40. You have a 32-way Regatta. Why is vmstat not an accurate tool to measure CPU utilization for each processor?
  41. If you have Workload Manager policies defined for several classes of processes, and the machine is under little load, what happens?
  42. What is the difference between a migration install, a preservation install, or an overwrite install?
  43. You need to update an AIX 4.3.2 machine to AIX 4.3.3. How do you do this?
  44. Define under what circumstances two different versions of a product can coexist on the same machine in AIX.
  45. What considerations do you need to make when cloning system X to system Y?
  46. A user wants you to install some set of commands on system X; these commands already exist on system Y. How would you tell which filesets to install?
  47. You’ve installed a new fileset. How do you tell which files are provided?
  48. Discuss your strategy for applying and committing maintenance
  49. What are the AIX Maintenance Levels and how do they differ from normal fixes?
  50. Describe the difference between a PTF, and APAR, and a maintenance level.
This entry was posted in Interview Questions. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *