Oracle Installation Interview Questions and Answers - 1
Question: 1
What is System Activity Reporter (SAR)?
SAR is a utility to display resource usage on the UNIX system, such as CPU activity, disk and memory usuage.
There are a number of switches or options that can be used with SAR.
Question: 2
Which UNIX command will control the default file permissions when files are created?
The umask command controls the default file permissions when files are created.
Question: 3
What is the difference between a soft link and a hard link?
In the UNIX operating system, a filename can point either to the data of the file or another file.
A soft link or symbolic link refers to a filename which points to another file while hard link refers to a filename that point to a file, which actually contains data.
Question: 4
Can you change the priority of a process in UNIX?
You can use the renice command to change the priority of a UNIX process with the following restrictions.
A user can only change the nice value of processes, which they own.
A user cannot start processes with nice value less than 20
A user cannot lower the nice values of their processes after they have raised them
Root has full access to the renice command.
Question: 5
What is the cut command in UNIX?
The cut command in used to extract sections from each line of input.
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