201-450 Sample Questions Answers

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

Under which of the following circumstances would the command ping output the string (DUP!)?

What should be done after updating the configuration file for syslogd in order to make the changes become effective? (Choose TWO correct answers.)

Which commands are used to load modules into the Linux kernel? (Choose TWO correct answers.)

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

What is the main template file used by autofs?

Please enter the complete path to the main SysV init process configuration file.

Which command is used to install a new LILO boot loader?

Which option to the update-rc.d command will cause the removal of all symlinks to /etc/rcX.d/*test2 even when the script /etc/init.d/test2 still exists?

The main configuration file for autofs has this entry:

/home /etc/auto.home

What is the meaning of the /etc/auto.home file?

Due to extreme system use, a Linux system requires some additional swap space. To initialize 5GB of additional swap space, which combination of commands should be used?

Which directory in /dev/disk/ can be used to determine the UUID of a connected hard disk?

Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path.)

Which of the following commands restores only those files containing lpi in their name from the archive lpifiles.tar.gz?

Which archive format is used to create an initramfs image?

What component of a system does smartd monitor?

Due to extreme system use, a Linux system requires some additional swap space. To initialize 5GB of additional swap space, which combination of commands should be used?

In the following output from top, which processes contribute to the percentage of time that the CPU spends in the state of wa?

Tasks: 193 total, 1 running, 190 sleeping, 2 stopped, 0 zombie

Cpu(s): 0.5%us, 0.3%sy, 0.0%ni, 98.2%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st

A regular user, joe, has just run:

./configure && make && make install

to build and install a program. However, the installation fails. What could be done to install the program? (Choose TWO correct answers.)

What is the device name for the first SCSI tape drive on a system when used without automatic rewinding after each write operation? (Please specify the full path to the device.)

Which of the following commands lists IPv4 addresses and MAC addresses of network nodes that the local system has seen on its directly connected IP networks?