Category Archives: AIX Interview Questions

Describe the difference between a PTF, and APAR, and a maintenance level. | AIX Questions

An APAR is a specific patch that may update one or more filesets. A PTF is an IBM term for a collection of APARs commonly shipped together as a common fileset update. A maintenance level is a collection of APARs … Continue reading

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What are the AIX Maintenance Levels and how do they differ from normal fixes? | AIX Questions

AIX Maintenance Levels are similar to an NT service pack. They are generally considered safe to install “all at once”. Normal AIX fix collections may or may not contain fixes that could interfere with each other; however, maintenance levels are … Continue reading

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Discuss your strategy for applying and committing maintenance | AIX Questions

A prudent administrator will generally apply fixes first if those fixes have never been used before in the environment. After an evaluation period, the fixes can be committed. Subsequent installations of those fixes on other machines can then be committed. … Continue reading

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You’ve installed a new fileset. How do you tell which files are provided?

Run “lslpp -f ” to see what files are installed by that fileset.

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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? | AIX Questions

Run “lslpp -w ” to see what fileset provides that command.

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What considerations do you need to make when cloning system X to system Y? | AIX Questions

Make sure that all the drivers needed for system Y and its associated hardware are included in the image for system X.

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Define under what circumstances two different versions of a product can coexist on the same machine in AIX. | AIX Questions

1. The names of the filesets for that product are different when stored in the ODM. 2. The product does not store names in the ODM.

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You need to update an AIX 4.3.2 machine to AIX 4.3.3. How do you do this? | AIX Questions

Take the AIX 4.3.3 CDs and perform an “update_all”.

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What is the difference between a migration install, a preservation install, or an overwrite install? | AIX Questions

A overwrite install recreates rootvg and the file systems and installs everything from scratch. Other non-OS file systems are deleted. A preservation install preserves rootvg. It only overwrites the base OS (to the base level from the installation image) and … Continue reading

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You have a 32-way Regatta. Why is vmstat not an accurate tool to measure CPU utilization for each processor? | AIX Questions

vmstat takes a system average. The sar command can show the CPU utilization for a particular processor. 41. If you have Workload Manager policies defined for several classes of processes, and the machine is under little load, what happens? Nothing. … Continue reading

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