103 Flashcards
(97 cards)
1
Q
Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?
A. /etc/keys B. /proc/keys C. /etc/inittab D. /proc/inittab E. /etc/reboot
A
C. /etc/inittab
2
Q
During a system boot cycle, what program is executed after the BIOS completes its taks?
A. The bootloader
B. The inetd program
C. The init program
D. The Kernel
A
A. The bootloader
3
Q
Which run levels should never be declared as the default run level when using SysV init? (Choose TWO correct answers)
A
0 & 6
4
Q
Which of the following statements is correct when talking about /proc?
A. All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot.
B. All files within /proc/ are read-only and their contents cannot be changed.
C. All changes to files in /proc/ are immediately recognized by the kernel.
D. All files within /proc/ are only readable by the root user.
A
C. All changes to files in /proc/ are immediately recognized by the kernel.
5
Q
Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers).
A. shutdown -r now B. shutdown -r "Rebooting" C. telinit 6 D. telinit 0 E. shutdown - k now "rebooting"
A
A. shutdown - r now
B. telinit 6
6
Q
Which of the following are init systems used within Linux systems? (Select three)
A- startd B- systemd C- upstart D- SysInit E- SysV init
A
B- systemd
C- Upstart
E- SysV init
7
Q
What information can the lspci command display about the system hardware? (Select THREE)
A - Device IRQ settings B - PCI bus speed C - System battery type D - Device vendor identification E - Ethernet MAC address
A
A - Device IRQ settings
B - PCI bus speed
D - Device vendor identification
8
Q
Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Select TWO)
A - shutdown -R 1 now B - shutdown -single now C - init 1 D - telinit 1 E - runlevel 1
A
C - init 1
D - telinit 1
9
Q
What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?
A - /lib/init.so B - /sbin/init C - /etc/rc.d/rcinit D - /proc/sys/kernel/init E - /boot/init
A
B - /sbin/init
10
Q
Which of the following commands will write a message to the terminals of all logged in users?
A - bcast B - mesg C - print D - wall E - yell
A
D - wall
11
Q
Which of the following kernel parameters instructs the kernel to suppress most boot messages?
A - silent
B - verbose=o
C - nomesg
D - quiet
A
D - quiet
12
Q
Which of the following options for the kernel’s command line changes the systemd boot target to rescue.target?
A - systemd.tartget=rescue.target B - systemd.runlevel=rescue.target C - systemd.service=rescue.target D - systemd.default=rescue.target E - systemd.unit=rescue.target
A
E - systemd.unit=rescue.target
13
Q
After modifying GNU GRUB’s configuration file, which command must be run for the changes to take effect?
A - kill -HUP $(pidof grub)
B - grub-install
C - grub
D - no action is required
A
D - no action is required
14
Q
Which of the following commands is used to update the list of available packages when using dpkg based package management?
A - apt-get update B - apt-get upgrade C - apt-cache update D - apt-get refresh E - apt-cache upgrade
A
A - apt-get update
15
Q
Which of the following commands lists the dependencies of a given dpkg package?
A - apt-cache depends-on package
B - apt-cache dependencies package
C - apt-cache depends package
D - apt-cache requires package
A
C - apt-cache depends package
16
Q
Which of the following options is used in a GRUB Legacy configuration file to define the amount of time that the GRUB menu will be shown to the user?
A - hidemenu
B - splash
C - timeout
D - showmenu
A
C - timeout
17
Q
What can the Logical Volume Manager (LVM) be used for? (Select three)
A - create RAID 9 arrays
B - dynamically change the size of logical volumes
C - encrypt logical volumes
D - create snapshots
E - dynamically create or delete logical volumes
A
B - dynamically change the size of logical volumes
D - create snapshots
E - dynamically create or delete logical volumes
18
Q
Which of the following commands updates the linker cache of shared libraries?
A - mkcache B - soconfig C - mkldconfig D - lddconfig E - ldconfig
A
E - ldconfig
19
Q
Which of the following commands lists all currently installed packages when using RPM package management?
A - yum –query –all
B - yum –list –installed
C - rpm –query –all
D - rpm –list installed
A
C - rpm –query –all
20
Q
Which of the following commands can be used to download the RPM package kernel without installing it?
A - yum download –no-install kernel
B - yumdownloader kernel
C - rpm –download –package kernel
D - rpmdownload kernel
A
B - yumdownloader kernel
21
Q
When using rpm –verify to check files created during the installation of RPM packages, which of the following information is taken into consideration? (Select three)
A - timestamps B - MD5 checksums C - Inodes D - File sizes E - GnuPG signatures
A
A - timestamps
B - MD5 checksums
D - File sizes
22
Q
Which of the following is correct when talking about mount points?
A - Every existing directory can be used as a mount point.
B - Only empty directories can be used as a mount point.
C - Directories need to have the SetUID flag set to be used as a mount point
D - Files within a directory are deleted when the directory is used as a mount point
A
A - Every existing directory can be used as a mount point
23
Q
Which function key is used to start Safe Mode in Windows NT?
A - F10
B - F8
C - F6
D - Windows NT does not support Safe Mode
A
D - Windows NT does not support Safe Mode
24
Q
Which of the following environment variables overrides or extends the list of directories holding shared libraries?
A - LD_LOAD_PATH B - LD_LIB_PATH C - LD_LIBRARY_PATH D - LD_SHARE_PATH E - LD_RUN_PATH
A
C - LD_SHARE_PATH
25
Which RPM command will output the name of the package which supplied the file /etc/exports?
```
A - rpm -F /etc/exports
B - rpm -qf /etc/exports
C - rpm -Kl /etc/exports
D - rpm -qp /etc/exports
E - rpm -pq /etc/exports
```
B - rpm -qf /etc/exports
26
When removing a package, which of the following dpkg options will completely remove the files including configuration files?
A) --clean
B) --delete
C) --purge
D) remove
C) --purge
27
Which file should be edited to select the network locations from which Debian installation package files are loaded?
```
A) /etc/dpkg/dpkg.cfg
B) /etc/apt/apt.cfg
C) /etc/apt/apt.conf.d
D) /etc/apt/sources.list
E) /etc/dpkg/dselect.cfg
```
D) /etc/apt/sources.list
28
Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?
A) dd if=/dev/zero of-/dev/sda bs=512
B) dd if=/dev/zero of=/dev/sda bs=512
C) dd if=/dev/zero of=/dev/sda bs=440
D) dd if=/dev/zero of=/dev/sda bs=440
C) dd if=/dev/zero of=/dev/sda bs=512
29
Which of the following commands can be used to create a USB storage media from a disk image?
```
A) gdisk
B) dd
C) cc
D) fdisk
E) mount
```
B) dd
30
In Bash, inserting 1>&2 after a command redirects:
```
A) standard user to standard input
B) standard input to standard error
C) standard output to standard error
D) standard error to standard output
E) standard output to standard input
```
C) standard output to standard error
31
What command will generate a list of user names from /etc/passwd along with their login shell?
A) column -s : 1,7 /etc/passwd
B) chop -c 1,7 /etc/passwd
C) colrm 1,7 /etc/passwd
D) cut -d: -f1,7 /etc/passwd
D) cut -d: -f1,7 /etc/passwd
32
In a nested directory structure, which find command line option would be used to restrict the command to searching down a particular number of subdirectories?
```
A) -dirmax
B) -maxdepth
C) -maxlevels
D) -n
E) -s
```
B) -maxdepth
33
In a nested directory structure, which find command line option would be used to restrict the command to searching down a particular number of subdirectories?
```
A) -dirmax
B) -maxdepth
C) -maxlevels
D) -n
E) -s
```
B) -maxdepth
34
Which of the following statements is correct regarding the command foo >1 bar?
A) The stdout from the command foo is appended to the file bar.
B) The stdout from the command foo overwrites the file bar.
C) The command foo receives its stdin from the file bar.
D) The command foo receives it stdin from the stdout of the command bar.
E) The stderr from the command foo is saved to the file bar.
B) The stdout from the command foo overwrites the file bar.
35
Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?
A) kill -PIPE 123
B) kill -KILL 123
C) kill -STOP 123
D) kill -TERM 123
D) kill -TERM 123
36
What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process?
A) 9
B) 19
C) 49
D) 99
B) 19
37
Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which single character command will insert the deleted content below the current line?
A) i
B) P
C) p
D) U
C) p
38
A user accidentally created the subdirectory /dir in his home directory. Which of the following commands will remove that directory?
```
A) rmdir '~/\dir'
B) rmdir "~/\dir"
C) rmdir ~/'dir'
D) rmdir ~/\dir
E) rmdir ~/\\dir
```
E) rmdir ~/\\dir
39
In compliance with the FHS, in which of the directories are man pages found?
```
A) /usr/share/man
B) /opt/man
C) /usr/doc
D) /var/pkg/man
E) /var/man
```
A) /usr/share/man
40
Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?
```
A) cat file1.log
B) myapp o>&1 | cat > file1.log
C) myapp | cat > file1.log
D) myapp | tee file1.log
E) tee myapp file1.log
```
D) myapp | tee file1.log
41
What is the purpose of the Bash built-in export command?
A) it allows disks to be mounted remotely
B) it runs a command as a process in a subshell
C) it makes the command history available to subshells
D) it sets up environment variables for applications
E) it shares NFS partitions for use by other systems on the network
D) it sets up environment variables for applications
42
What is the output of the following command?
Echo "Hello World" | tr -d aieou
A) Hello World
B) eoo
C) Hll Wrld
D) eoo Hll Wrld
C) Hll Wrld
43
Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?
A)
A)
44
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
```
A) file /tmp/myfile.txt
B) echo "Hello" >/tmp/myfile.txt
C) sed -ie "s/1/2/" /tmp/myfile.txt
D) echo -n "Hello" >>/tmp/myfile.txt
E) touch /tmp/myfile.txt
```
A) file /tmp/myfile.txt
45
What is the default nice level when a process is started using the nice command?
A) -10
B) 10
C) 20
D) 0
B) 10
46
What is the default action of the split command on an input file?
A) It will break the file into new files of 1,024 byte pieces each
B) It will break the file into new files of 1,000 line pieces each
C) It will break the file into new files of 1,024 kilobyte pieces each
D) It will break the file into new files that are no more than 5% of the size of the original file
B) It will break the file into new files of 1,000 line pieces each
47
What is the difference between the i and a commands of the vi editor?
A) i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically
B) i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.
C) i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the indentation of the previous line
D) i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates editing
B) i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.
48
Which of the following commands moves and resumes in the background the last stopped shell job?
A) run
B) bg
C) fg
D) back
B) bg
49
What is the effect of the egrep command when the -v option is used?
A) it enables color to highlight matching parts
B) it only outputs non-matching lines
C) it shows the command's version information
D) it changes the output order showing the last matching line first
B) it only outputs non-matching lines
50
What does the ? symbol within regular expressions represent?
A) match the preceding qualifier one or more times
B) match the preceding qualifier zero or more times
C) match the preceding qualifier zero or one times
D) match a literal ? character
C) match the preceding qualifier zero or one times
51
In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple times or applied to multiple rows?
A) by using the command :repeat followed by the number and command
B) by specifying the number right in front of a command such as 4l or 2yj
C) by selecting all affected lines using the shift and cursor keys before applying the command
D) by issuing a command such as :set repetition=4 which repeats every subsequent command 4 times.
B) by specifying the number right in front of a command such as 4l or 2yj.
52
Which of the following files, located in the user home directory, is used to store the Bash history?
```
A) .bash_history
B) .bash_histfile
C) .history
D) .bashre_history
E) .history_bash
```
A) .bash_history
53
Which of the following commands displays the contents of a gzip compressed tar archive?
A) gzip archive.tgz | tar xvf -
B) tar ztf archive.tgz
C) gzip -d archive.tgz | tar tvf -
B) tar ztf archive.tgz
54
Which grep command will print only the lines that do not end with a / in the file foo?
A) grep '/$' foo
B) grep '/#' foo
C) grep -v '/$' foo
D) grep -v '/#' foo
C) grep -v '/$' foo
55
Which of the following commands is used to change options and positional parameters for a running Bash?
```
A) history
B) set
C) bashconf
D) setsh
E) envsetup
```
B) set
56
Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?
A) sed '/bob/Bob' letter > newletter
B) sed s/bob/Bob/ letter newletter
D) sed 's/bob/Bob/g' letter > newletter
E) sed 's/bob, Bob/' letter > newletter
D) sed 's/bob/Bob/g' letter > newletter
57
From a Bash shell, which of the following commands directly executes the instruction from file /usr/local/bin/runme.sh without starting a subshell? (Select 2)
```
A) source /usr/local/bin/runme.sh
B) . /usr/local/bin/runme.sh
C) /bin/bash /usr/local/bin/runme.sh
D) /usr/local/bin/runme.sh
E) run /usr/local/bin/runme.sh
```
A) source /usr/local/bin/runme.sh
| B) . /usr/local/bin/runme.sh
58
Regarding the command: nice -5 /usr/bin/prog which of the following statements is correct?
A) /usr/bin/prog is executed with a nice level of -5
B) /usr/bin/prog is executed with a nice level of 5
C) /usr/bin/prog is executed with a priority of -5
D) /usr/bin/prog is executed with a priority of 5
B) /usr/bin/prog is executed with a nice level of 5
59
Which shell command is used to continue background execution of a suspended command?
```
A) &
B) bg
C) cont
D) exec
E) :&
```
B) bg
60
Which of the following she redirections will write standard output and standard error output to a file named filename?
```
A) 2>&1 >filename
B) >filename 2>&1
C) 1>&2>filename
D) >>filename
E) 1&2>filename
```
B)>filename 2>&1
61
In the vi editor, which of the following commands will copy the current line into the vi buffer?
```
A) c
B) cc
C) 1c
D) yy
E) 1y!
```
D) yy
62
Which of the following sequences in the vi editor saves the opened document and exits the editor? (Select 2)
```
A) esc ZZ
B) ctrl :w!
C) esc zz
D) esc :wq!
E) ctrl XX
```
A) esc ZZ
| D) esc :wq!
63
When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process?
A) -10
B) 0
C) 10
D) 20
C) 10
64
Which of the folloing commands will reduce all consecutive spaces down to a single space?
```
A) tr '\s' ' ' b.txt
B) tr -c ' ' b.txt
C) tr -d ' ' b.txt
D) tr -r ' ' '\n' b.txt
E) tr-s ' ' b.txt
```
E) tr -s ' ' b.txt
65
Which character, added to the end of a command, runs that command in the background as a child process of the current shell?
```
A) !
B) +
C) &
D) %
E) #
```
C) &
66
Which of the following commands will print the last 10 lines of a text file to the standard output?
A) cat -n 10 filename
B) dump -n 10 filename
C) head -n 10 filename
D) tail -n 10 filename
D) tail -n 10 filename
67
Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?
A) fmt -f 1,4 /etc/passwd
B) slpit -c 1,4 /etc/passwd
C) cut -d : -f 1,4 /etc/passwd
D) paste -f 1,4 /etc/passwd
C) cut -d : -f 1,4 /etc/passwd
68
Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard?
A) SIGTERM
B) SIGINT
C) SIGSTOP
D) SIGKILL
B) SIGINT
69
What happens after issuing the command vi without any additional parameters?
A) vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited.
B) vi starts and requires the user to explicitly either create a new or load an existing file.
C) vi exits with an error message as it cannot be invoked without a file name to operate on.
D) vi starts in command mode and opens a new empty file.
E) vi starts and opens a new file which is filled the content of the vi buffer if the buffer contains text
D) vi starts in command mode and opens a new empty file
70
Which of the following command sets the Bash variable named TEST with the content FOO?
```
A) set TEST="FOO"
B) TEST = "FOO"
C) var TEST="FOO"
D) TEST="FOO"
```
D) TEST="FOO"
71
Which variable defines the directories in a Bash shell searches for executable commands?
```
A) BASHEXEC
B) BASHRC
C) PATH
D) EXECPATH
E) PATHRC
```
C) PATH
72
Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?
```
A) magic
B) type
C) file
D) pmagic
E) hash
```
C) file
73
Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Select 2)
```
A) find /tmp -uid root -print
B) find -path /tmp -uid root
C) find /tmp -user root -print
D) find /tmp -user root
E) find -path /tmp -user root print
```
C) find /tmp -user root -print
| D) find /tmp -user root
74
When running the command sed -e"s/a/b/" /tmp/file>/tmp/file While /tmp/file contains data, why is /tmp/file empty afterwards?
A) The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.
B) The command sed did not match anything in that file therefore the output is empty.
C) When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading
D) Redirection for shell commands do not work using the > character. It only works using the | character instead.
C) When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading.
75
When given the following command line .echo "foo bar" | tee bar | cat Which of the following output is created?
```
A) cat
B) foo bar
C) tee bar
D) bar
E) foo
```
B) foo bar
76
Which of the following commands can be used to determine how long the system has been running? (Select 2)
```
A) uptime
B) up
C) top
D) uname -u
E) time up
```
A) update
| C) top
77
Which of the following are valid stream redirection operators within Bash? (Select 3)
A)
D) >>>
E) &>
A)
78
After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?
A) foo and bar would be removed.
B) foo would be removed while bar would remain accessible
C) foo would be removed, bar would still exist but would be unusable
D) Both foo and bar would remain accessible
E) The user is prompted whether bar should be removed, too
B) foo would be removed while bar would remain accessible
79
After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of exiting applications? (Select 2)
A) by creating an ACL redirection from the old to the new path of the data
B) by creating a hard link from the old to the new path of the data
C) by creating a symbolic link from the old to the new path of the data
D) by running the command touch on the old path
E) by mounting the new filesystem on the original path of the data
C) by creating a symbolic link from the old to the new path of the data
E) by mounting the new filesystem on the original path of the data
80
Which of the following commands changes the ownership of file.txt to the user dan and the group staff?
A) chown dan/staff file.txt
B) chown dan:staff file.txt
C) chown -u dan -g staff file.txt
D) chown dan -g staff file.txt
B) chown dan:staff file.txt
81
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?
A) chmod u=rwx,go=rx /bin/foo
B) chmod o+rwx,a+rx /bin/foo
C) chmod 577 /bin/foo
D) chmod 775 /bin/foo
A) chmod u=rwx,go=rx /bin/foo
82
Which of the following commands can be used to search for the executable file foo when it has been placed in a directory not included in $PATH?
```
A) apropos
B) which
C) find
D) query
E) whereis
```
C) find
83
What does the command mount -a do?
A) it ensures that all file systems listed with the option noauto in /etc/fstab are mounted
B) it shows all mounted file systems that have been automatically mounted
C) it opens an editor with root privileges and loads /etc/fstab for editing
D) it ensures that all file systems listed with the option auto in /etc/fstab are mounted
E) it ensures that all file systems listed in /etc/fstab are mounted regardless of their options
D) it ensures that all file systems listed with the option auto in /etc/fstab are mounted
84
Which of the follolwing settings for unmask ensures that new files have the default permissions -rw-r----?
A) 0017
B) 0640
C) 0038
D) 0027
D) 0027
85
Which of the following is teh device file name for the second partition on the only SCSI drive?
A) /dev/hda1
B) /dev/sda2
C) /dev/sdoa2
D) /dev/sd1p2
B) /dev/sda2
86
In order to display all currently mounted filesystems, which of the following commands could be used? (Select 2)
```
A) cat /proc/self/mounts
B) free
C) mount
D) lsmounts
E) cat /proc/filesystems
```
A) cat /proc/self/mounts
| C) mount
87
Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?
```
A) dirname
B) which
C) basename
D) query
E) whereis
```
E) whereis
88
Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting?
```
A) tune2fs -d 200 /dev/sda1
B) tune2fs -c 200 /dev/sda1
C) tune2fs -i 200 /dev/sda1
D) tune2fs -n 200 /dev/sda1
E) tune2fs --days 200 /dev/sda1
```
C) tune2fs -i 200 /dev/sda1
89
Which type of filesystem is created by mkfs when it is executed with the block devices name only and without any additional parameters?
```
A) ext2
B) ext3
C) ext4
D) XFS
E) VFAT
```
A) ext32
90
How many fields are in a syntactically correct line of /etc/fstab?
```
A) 3
B) 4
C) 5
D) 6
E) 7
```
D) 6
91
Whoch of the following file permissions belong to a symbolic link?
A) -rwxrwxrwx
B) +rwxrwxrwx
C) lrwxrwxrwx
D) srwxrwxrwx
C) lrwxrwxrwx
92
Creating a hard link to an ordinary file returns an error. What could be the reason for this?
A) the source file is hidden
B) the source file is read-only
C) The source file is a shell script
D) the source file is already a hard link
E) the source and the target are on different file systems
E) the source and the target are on different filesystems
93
Which of the following commands creates an ext3 filesystem on /dev/sdb1? (Select 2)
A) /sbin/mkefs -j /dev/sdb1
B) /sbin/mkfs -t ext3 /dev/sdb1
C) /sbin/mkfs -c ext3 /dev/sdb1
D) /sbin/mke3fs -j /dev/sdb1
A & B
94
Which of the following commands will change the quota for a specific user?
A) edquota
B) repquota
C) quota -e
D) quota
A) edquota
95
Which utility would e used to change how often a filesystem check is performed on an ext2 filesystem without losing any data stored on that filesystem?
```
A) mod2fs
B0 fsck
C) tune2fs
D) mke2fs
E) fixe2fs
```
C) tune2fs
96
Which of the following Linux filesystems preallocates a fixed number fo inodes at the filesystems's make/ creation time and does NOT generate them as needed? (Select 2)
```
A) ext3
B) JFS
C) ext2
D) XFS
E) procfs
```
A) ext3
| C) ext2
97
What is the purpose of the Filesystem Hierarchy Standard?
It is a distribution neutral description of locations of files and directories
