LPI 201-450 practice test

In this example output, which descriptions match the purpose of the free, buff and cache columns?
(Choose THREE correct answers.)
# vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0

• A. Used swap space
• B. RAM available for filesystem buffers
• C. Available free RAM
• D. RAM used for buffers
• E. RAM used for filesystem cache

In the following output, what is the 5 minute load average for the system?
# uptime
12:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31

• A. 0.47
• B. 24.71
• C. 35.31
• D. There is no 5 minute interval. It is some value between 0.47 and 24.71.
• E. There is no 5 minute interval. It is some value between 24.71 and 35.31.

Which of the following commands will provide the PIDs of the processes sorted by which are using
the most CPU cycles on the Linux system?

• A. top
• B. uptime
• C. ps aux
• D. vmstat
• E. freemem

Which command will report information on memory usage, paging and block input/output?

• A. free
• B. memshow
• C. ps
• D. top
• E. vmstat

When is historical data of resource usage important? (Select THREE correct answers.)

• A. Predicting when resources will need to be increased.
• B. Selecting a computer vendor.
• C. Identifying processes killed during out of memory occurrences.
• D. Diagnosing capacity problems.
• E. Troubleshooting a software problem.

What option in the collectd configuration file is required in order to define what to start monitoring?

• A. LoadModule
• B. Module
• C. Plugin
• D. LoadPlugin

Which of the following terms are used to describe 3.x kernel releases? (Choose TWO correct
answers.)

• A. beta
• B. final
• C. longterm
• D. prerelease
• E. stable

According to the Filesystem Hierarchy Standard (FHS), what is the path to the Linux kernel source and
may be a symbolic link to the real Linux source code? (Please specify the full path with no version
information.)

After installing a compiled kernel, it can not find any modules that are needed to be loaded. What
make target was likely missed while installing the kernel?

A new kernel version needs to be compiled to use a new feature. If the old kernel configuration file
is available, which make target creates a configuration file for the new kernel based on the
configuration of the old kernel?