AIX : few aix tech questions.

Here is the last week’s AIX Exam questions/answers from my memory.

1. What is the location of crontab files?

-        /var/spool/cron/crontabs

2. Crontab entry should be.

            date command 1>/tmp/standard.out 2>/error.out

3. The default memory dump device location is?

            /var/adm/ras/

4 . How to find out the Ethernet primary connection status?

            entstat –d entX

6. How to change error report log size?

            /usr/lib/errdemon -s 41943040    

7. What is the size of 2,000,000 in ulimit fsize?

            2GB

8. How to add hdisk1 to boolist.

            bootlist –m normal hdisk0 hdisk1

9. How to setup boot list of normal bootup.

            bootlist –m normal hdisk0 hdisk1

10. How to share CPU in dynamic LPAR?

            Change CPU share in HMC Profile of the LPARS.

12. CIO options.

            In Oracle 10g/11g, CIO both are options – not true, 11g does not have the option.

13. How to find out the output result of the script?

            $?

14. In NIM environment, what is the minimum requirement for bootup of client?

            SPOT and LPP Source

15. What is required for network boot in NIM?

            SPOT.

16. How to check disk heart beat in receiving side.

            Sending : dhb_read –p hdisk10 –r

            Receiving : dhb_read hdisk10 –t

17. In PowerHA, what to do after the importvg?

            varyonvg

18. When there’re two interfaces, svc ip and backup ip, how to distinguish the path.

            static route.

19. Which of following doesn’t require in GPFS.

            The name resolution is not required in GPFS.

20. How to monitor the memory usage and file cashing info in memory.

            svmon

22. what is the right value for AIX6.1

            max_perm(90), min_perm(3), max_client(90), file_repage(0), string_maxperm(0), strict_maxclient(1)

23. Which incident HA can’t recover from.

            Network error.

            PowerHA could recover from network card error, node failure, disk error.

24. How to check HA status?

            lssrc –ls clstrmgrES

25. Which parameter should be set to release disk to take over in PowerHA?

            The “reserver_lock” parameter should set to “no”.

26. What happens if there’s same lv name when import a volume group?

            There will be an error and error the command out.

27. What to do if the disk does not have any pvid ?

            chdev –l hdiskX –a pv=yes

28. What is the command to defragment file system in AIX?

            defragfs