37054907
Description
Quiz by Carlos Alberto Jara Alva, updated more than 1 year ago
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Created by Carlos Alberto Jara Alva
over 2 years ago
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Question 1
Question
What kind of hardware is represented by the device name /dev/hda?
Answer
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IDE Hard Drive
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SCSI Hard Drive
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SATA Hard Drive
-
Sound Card
Question 2
Question
What file should you query to determine whether there is an IRQ conflict on your system?
Answer
-
/proc/interrupts
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/proc/cpuinfo
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/proc/meminfo
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/proc/irqstatus
Question 3
Question
Which of the following are arguments you can pass to the kernel at boot time
to tell it to start in runlevel 1 (single-user mode)? (Select two)
Answer
-
1
-
single
-
user
-
one
Question 4
Question
Which process is referred to as the “mother of all processes” and always has PID 1?
Answer
-
init
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mother
-
admin
-
administrator
Question 5
Question
Which logfile should you examine for information about the hardware that the kernel initialized at boot time?
Answer
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/var/log/messages
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/var/log/lastlog
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/var/log/wtmp
-
/var/log/cron
Question 6
Question
If you want to change your system’s default boot device from the hard drive to the CD-ROM drive, where would you make that configuration change?
Answer
-
The BIOS
-
The file /boot/grub/grub.conf
-
The file /etc/inittab
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The file /etcgrub/grub.conf
Question 7
Question
What command line would reboot a running Linux system immediately, forcing an fsck of every drive on reboot?
Answer
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/sbin/shutdown –r –F now
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/sbin/shutdown –h –F now
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/sbin/shutdown
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/sbin/shutdown –r –f now
Question 8
Question
Which of the following are valid ways to interactively switch a running system to runlevel 3? (Select two)
Answer
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init 3
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telinit 3
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runlevel 3
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init -3
Question 9
Question
If you have created your own script that you wish to run every time your system boots, but it must run after all other processes have completed, where is the best place to reference it?
Answer
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/etc/inittab
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/etc/rc.d/rc.sysinit
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A symlink beginning with S in /etc/rc.d/rc5.d/
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/etc/rc.d/rc.local
Question 10
Question
Which command is used to display the current mounted partitions, their mount points, and the available free space on each?
Answer
-
df
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fdisk
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fsck
-
mount
Question 11
Question
Which partition is designed to hold data that changes often and is writable by all users?
Answer
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/tmp
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/opt
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/sys
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/var
Question 12
Question
What does MBR stand for?
Answer
-
Master Boot Record
-
Main Booting Runlevel
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Main Block Record
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Master Boot Resource
Question 13
Question
Which of the following lines in /boot/grub/grub.conf would tell GRUB to use the first partition of the first hard drive as the root partition?
Answer
-
root (hd0,0)
-
boot (hd0,0)
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root (hd1,1)
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boot (hd1,1)
Question 14
Question
What file contains a list of directories that are searched to find shared libraries when a binary program is executed?
Answer
-
/etc/ld.so.conf
-
/etc/loader.conf
-
/etc/library/conf
-
/etc/ld.so.cache
Question 15
Question
For distributions that use the Debian package management system, what command will download and update all installed packages to the latest available version?
Answer
-
apt-get update
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apt-get install
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apt-cache update
-
dpkg –i
Question 16
Question
If I download a .deb package (package.deb) and wish to install it, what’s the best command to use?
Answer
-
dpkg –i package.deb
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apt-get install package.deb
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apt install package.deb
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dpkg package.deb
Question 17
Question
For distributions that use the Red Hat package management system, what command will list all packages currently installed?
Answer
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rpm –qa
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rpm –i
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rpm –Uvh
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rpm –list
Question 18
Question
For distributions that use the Red Hat package management system, what command will download and update all installed packages to the latest available version?
Answer
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yum update
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yum install
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yum config
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yum list available
Question 19
Question
What option(s) to rpm will instruct rpm to run a verification check on all packages installed on the system? (Select two)
Answer
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rpm –verify –all
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rpm –Va
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rpm –qa
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rpm –check
Question 20
Question
What command is used to display a list of directories the shell will search in to find a command that has been entered?
Answer
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echo $PATH
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echo $MYPATH
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setenv
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set $PATH
Question 21
Question
Which file(s) does the bash shell read at login to set environment variables?
Answer
-
All of the above
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/etc/bashrc
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~/.bashrc
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None of the above
Question 22
Question
What commands can be used to view a list of the last commands typed into the shell?
Answer
-
All of the above
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history
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<Ctrl-R>
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<up arrow>
Question 23
Question
If my current directory is /opt and I wish to run the command /opt/runme, what
command(s) could I type (assuming /opt is not in your $PATH)? (select two)
Answer
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/opt/runme
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/runme
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opt/runme
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~/runme
Question 24
Question
Which of the following commands will redirect the standard output of /bin/ls to /dev/null, while allowing standard error to display on the screen?
Answer
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/bin/ls 1> /dev/null
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/bin/ls > /dev/null
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/bin/ls > /dev/null 2>&1
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/bin/ls 2> /dev/null 1>&2
Question 25
Question
Which of the following command(s) will display the first 5 lines of the file /etc/passwd? (Select two)
Answer
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head -5 /etc/passwd
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cat /etc/passwd | head -5
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cat -5 /etc/passwd
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cat /etc/passwd | more -5
Question 26
Question
Which commands can be used to perform a search and replace on a file or a text stream? (Select two)
Answer
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sed
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tr
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dd
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mv
Question 27
Question
What command(s) can be used to copy data to and from raw devices, bypassing the filesystem? (Select two)
Answer
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tar
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dd
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mv
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sed
Question 28
Question
What option can be passed to /bin/ls to display every file in a directory that ends in .txt?
Answer
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ls * txt
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ls *txt*
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ls [txt]
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ls +.txt
Question 29
Question
What option can be passed to /bin/ls to display every file that starts with the letters a, b, or c?
Answer
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ls [abc]*
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ls abc*
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ls a*b*c*
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ls ^abc
Question 30
Question
Which file extensions are common for files or directories that have been concatenated with tar and then compressed with bzip2?
Answer
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All of the above
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.tar.bz2
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.tbz2
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.tbz
Question 31
Question
What device should you redirect output to if you do not want to see it or save it?
Answer
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/dev/null
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/dev/nothing
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/dev/empty
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/dev/zero
Question 32
Question
Which of the following commands would list the contents of the directory /tmp, store that list in the file /root/tmp.txt, and display the list a screen at a time?
Answer
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ls –l /tmp | tee /root/tmp.txt | more
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ls –l /tmp | xargs /root/tmp.txt | more
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ls –l /tmp | more | tee /root/tmp.txt
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tee /root/tmp.txt | ls –l /tmp | more
Question 33
Question
What character is used after a command line to indicate that the command should run in the background and return shell control to the user?
Answer
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&
-
*
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+
-
-
Question 34
Question
What command is used at the beginning of a command line to detach the process from a terminal, allowing it to continue running after the user has logged out?
Answer
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nohup
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hangup
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detach
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background
Question 35
Question
What command will display a full-screen, updated list of all running processes?
Answer
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top
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kill
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ps
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free
Question 36
Question
If a running process is not responding to a standard terminate signal from the /bin/kill command, what option can you pass to force the process to terminate immediately?
Answer
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kill -9
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kill -1
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kill --HUP
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kill --stop
Question 37
Question
What command can be used to kill processes by name, rather than process ID?
Answer
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killall
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killproc
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killname
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kill –name
Question 38
Question
Which command line would start the program /usr/bin/top with the highest priority possible?
Answer
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nice --20 /usr/bin/top
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nice 20 /usr/bin/top
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nice 19 /usr/bin/top
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nice -20 /usr/bin/top
Question 39
Question
Which command is used to modify the priority of a process already running?
Answer
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renice
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priority
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chage
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ps
Question 40
Question
Which command(s) would display every line in /tmp/file.txt that begins with the letter h and ends with the letter t?
Answer
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grep –E "^h.*t$" /tmp/file.txt
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grep "^h.+t$" /tmp/file.txt
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grep –E "^h.+t$" /tmp/file.txt
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grep –E "$h.+t^" /tmp/file.txt
Question 41
Question
Which command(s) would display every line in /tmp/file.txt that contains at least one letter of the alphabet? (Select Two)
Answer
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grep " [a-zA-Z] " /tmp/file.txt
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grep " [:alpha:] " /tmp/file.txt
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grep " [:letters:] " /tmp/file.txt
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grep " (a-zA-Z) " /tmp/file.txt
Question 42
Question
In the vi editor, what command sequence given in command mode will save the current file and quit the editor?
Answer
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:wq
-
:WQ
-
:pq
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None of the above
Question 43
Question
In the vi editor, what command sequence given in command mode will make a copy of the current line?
Answer
-
yyp
-
cp
-
yp
-
ccp
Question 44
Question
In the vi editor, what command sequence given in command mode will quit a file without saving, even if changes have been made?
Answer
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:q!
-
:q
-
:q1
-
:w!
Question 45
Question
Which of the following are examples of journaling filesystems? (Select two)
Answer
-
ext3
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reiserfs
-
xfs
-
ext2
Question 46
Question
What command will create an ext3 partition on the first partition of the first SCSI hard drive?
Answer
-
mkfs –t ext3 /dev/sda1
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fdisk –t ext3 /dev/sda1
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fsck –t ext3 /dev/sda1
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mkfs –s ext3 /dev/hda1
Question 47
Question
What command is used to convert an existing ext2 partition (/dev/sda1) to an ext3 (journaled) partition?
Answer
-
tune2fs –j /dev/sda1
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dumpe2fs –j /dev/sda1
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fsck –j /dev/sda1
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mkfs.ext2 –j /dev/sda1
Question 48
Question
What command is used to display the number of free inodes on an ext2 or ext3 partition?
Answer
-
dumpe2fs
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showe2fs
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fsck
-
fdisk
Question 49
Question
Which file defines what partitions are mounted at boot time?
Answer
-
/etc/fstab
-
/etc/partitions
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/etc/mount
-
/etc/mtab
Question 50
Question
Which command will mount all partitions of type nfs defined in /etc/fstab?
Answer
-
mount –a –t nfs
-
mount –a nfs –t
-
mount –nfs
-
mountall –nfs
Question 51
Question
If you would like to give a normal (nonroot) user the ability to mount a device, what option should you define for that device in /etc/fstab?
Answer
-
user
-
mountable
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noroot
-
ok
Question 52
Question
Which option to chmod would assign read/write permission to the file owner, read-only permission to the group owner, and read-only permission to everyone else?
Answer
-
chmod 644 file.txt
-
chmod 755 file.txt
-
chmod 466 file.txt
-
chmod 777 file.txt
Question 53
Question
Which option to umask would set my default file permissions such that files are created with these permissions: user has read/write, group has read/write, and everyone else has read only?
Answer
-
umask 022
-
umask 200
-
umask 220
-
umask 775
Question 54
Question
Which command can be used to quickly tell you if an executable command is in any directory defined in your $PATH environment variable?
Answer
-
which
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find
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locate
-
who
Question 55
Question
Which directory, according to the Filesystem Hierarchy Standard, is designed to hold essential system binaries?
Answer
-
/sbin
-
/bin
-
/usr/bin
-
/opt/bin
Question 56
Question
According to the Filesystem Hierarchy Standard, what directory (or directories) must hold the system kernel? (Select Two)
Answer
-
/boot
-
/
-
/opt
-
/sbin
Question 57
Question
What command is used to maintain the filesystem index that the command /usr/bin/locate searches?
Answer
-
updatedb
-
update
-
updatelocate
-
locate –update
Question 58
Question
Use find to search for bash:
Answer
-
$ find / -name bash
-
$ find / -linux bash
-
$ find / -time bash
-
$ find / -chown bash
Question 59
Question
If you created a new partition in the previous exercises, check it with fsck and observe the output:
Answer
-
$ fsck -f /dev/partition
-
$ fsck -f /bin/partition
-
$ fsck -f /sbin/partition
-
$ fsck -f /dev/null
Question 60
Question
Check on the status of filesystems using df:
Answer
-
$ df -h
-
$ df -w
-
$ df -z
-
$ df -gg
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