201-450 Online Practice Questions and Answers

In the following output, what is the 5 minute load average for the system?

12:10:05

up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31

A.

1,5 and 15 minutes

B.

1,15 and 30 minutes

C.

5,20 and 25 seconds

D.

15,30 and 60 minutes

E.

15,45 and 90 seconds

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

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

If all of the following files and/or symlinks exist in a SysV-init runlevel directory, which of the following will be executed first when booting the system directly into the runlevel?

A. S99lpi

B. K99lpi

C. PRE-S99lpi

D. S98lpi

E. S99a-lpi

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

A. lilo

B. lilo-config

C. lilo-install

D. install-lilo

Which of the following best describes the format of the /etc/fstab file?

A. device name; filesystem type; mount point; mount options; dump filesystem; fsck order

B. device name; mount point; filesystem type; mount options; dump filesystem; fsck order

C. device name; mount point; mount options; filesystem type; dump filesystem; fsck order

D. mount point; filesystem type; device name; mount options; dump filesystem; fsck order

E. mount point; device name; filesystem type; mount options; dump filesystem; fsck order

What is the minimum number of disks required in a fully redundant RAID5 array?

A. 1

B. 2

C. 3

D. 4

E. 5

Which of the following is an example path to a Linux software RAID array?

A. /dev/raid0

B. /dev/rd1

C. /dev/pr0

D. /dev/md1

Which of the filter keywords below could be used in the following command:

tcpdump -i eth0 ____________ 203.0.113.8 (Choose three.)

A. host

B. ip

C. src

D. dst

E. ipv6

What command is used to send messages to all users currently logged in? (Specify ONLY the command without any path or parameters.)