Examen 101 - LPI Chapter 4,5: Managing Files (31 de 50)

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Carlos Alberto Jara Alva
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Carlos Alberto Jara Alva
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Zusammenfassung der Ressource

Frage 1

Frage
You type mkdir one/two/three and receive an error message that reads, in part, No such file or directory. What can you do to overcome this problem? (Select two.)
Antworten
  • Add the --parents parameter to the mkdir command.
  • Issue three separate mkdir commands: mkdir one, then mkdir one/two, and then mkdir one/two/three.
  • Type touch /bin/mkdir to be sure the mkdir program file exists.
  • Type rmdir one to clear away the interfering base of the desired new directory tree.
  • Type mktree one/two/three instead of mkdir one/two/three.

Frage 2

Frage
Typing ls -ld wonderjaye reveals a symbolic file mode of drwxr-xr-x. Which of the following are true? (Select two.)
Antworten
  • wonderjaye is a symbolic link.
  • wonderjaye is an executable program.
  • wonderjaye is a directory.
  • wonderjaye has its SUID bit set.
  • wonderjaye may be read by all users of the system.

Frage 3

Frage
When should programs be configured SUID root?
Antworten
  • At all times. This permission is required for executable programs.
  • Whenever a program should be able to access a device file.
  • Only when they require root privileges to do their job.
  • Never. This permission is a severe security risk
  • Whenever the program file is owned by the root user.

Frage 4

Frage
You see the usrquota and grpquota options in the /etc/fstab entry for a filesystem. What is the consequence of these entries?
Antworten
  • Quota support will be available if it’s compiled into the kernel; it will be automatically activated when you mount the filesystem.
  • User quotas will be available, but the grpquota option is invalid and will be ignored.
  • Quota support will be disabled on the filesystem in question.
  • Nothing. These options are malformed and so will have no effect
  • Quota support will be available if it’s compiled into your kernel, but you must activate it with the quotaon command.

Frage 5

Frage
Which of the following commands can be used to summarize the quota information about all filesystems?
Antworten
  • repquota
  • repquota -a
  • quotacheck
  • quotacheck –a
  • edquota -a

Frage 6

Frage
Which of the following file-location commands is likely to take the most time to find a file that may be located anywhere on the computer (assuming the operation succeeds)?
Antworten
  • The find command.
  • The locate command.
  • The whereis command.
  • The type command.
  • They’re all equal in speed.

Frage 7

Frage
What can the type command do that whereis can’t?
Antworten
  • Identify the command as being for x86 or x86-64 CPUs
  • Locate commands based on their intended purpose, not just by name
  • Identify a command as an alias, internal command, or external command
  • Assist in typing a command by finishing typing it for you
  • Identify a command as being a binary or a script

Frage 8

Frage
What can you conclude from the following interaction? $ which man /usr/bin/man
Antworten
  • The only file called man on the computer is in /usr/bin.
  • The /usr/bin/man program was installed by system package tools.
  • The /usr/bin/man program will be run by any user who types man.
  • The first instance of the man program, in path search order, is in /usr/bin.
  • The user man owns the /usr/bin/man program file.

Frage 9

Frage
Which one of the following commands copies files with the .txt extension from /dir into /dir2, while preserving file attributes such as dates?
Antworten
  • mv --copy /dir1/*.txt /dir2
  • mv /dir1/*.txt /dir2
  • cp -k /dir1/*.txt /dir2
  • cp -p /dir1/*.txt /dir2
  • cp -p /dir2 < /dir/*.txt

Frage 10

Frage
Which one of the following file globs matches "Linux" and "linux", but not "linux.com" and not "TurboLinux"?
Antworten
  • [L/linux]
  • ?inux
  • \L\linux
  • [Ll]inux
  • [Ll]inux?

Frage 11

Frage
Which one of the following outcomes results from the following command? #chmod g+s /home/software
Antworten
  • The SUID bit will be set for /home/software
  • The SGID bit will be set for /home/software, preventing access by those not a member of the software group.
  • The SGID bit will be set for /home/software, in order to keep group membership of the directory consistent for all files created.
  • The sticky bit will be set for /home/software
  • The sticky bit will be applied to all files in /home/software.

Frage 12

Frage
Which one of the following commands versosely extracts files from a tar archive on a magnetic tape device?
Antworten
  • tar cvf /dev/st0
  • tar cvf /dev/ttyS0
  • tar xvf /dev/st0
  • tar xvf /dev/ttyS0
  • tar rvf /dev/st0

Frage 13

Frage
Which command can be used to quickly tell you if an executable command is in any directory defined in your $PATH environment variable?
Antworten
  • find
  • locate
  • which
  • who
  • what

Frage 14

Frage
Which directory, according to he Filesystem Hierarchy Standard, is designed to hold essential system binaries?
Antworten
  • /sbin
  • /bin
  • /usr/bin
  • /opt/bin
  • /usr/local/bin

Frage 15

Frage
According to the Filesystem Hierarchy Standard, what directory (or directories) must hold the system kernel? (Select two)
Antworten
  • /boot
  • /
  • /opt
  • /sbin
  • /kernel

Frage 16

Frage
What command(s) can be used to copy data to and from raw devices, bypassing the filesystem? (Select two)
Antworten
  • cp
  • tar
  • dd
  • mv
  • sed

Frage 17

Frage
A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?
Antworten
  • rmdir '~/\dir'
  • rmdir "~/\dir"
  • rmdir ~/'dir'
  • rmdir ~/\dir
  • rmdir ~/\\dir

Frage 18

Frage
Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?
Antworten
  • dirname
  • which
  • basename
  • query
  • whereis

Frage 19

Frage
In compliance with the FHS, in which of the directories are man pages found?
Antworten
  • /usr/share/man
  • /opt/man
  • /usr/doc/
  • /var/pkg/man
  • /var/man

Frage 20

Frage
Which of the following commands displays the contents of a gzip compressed tar archive?
Antworten
  • gzip archive.tgz | tar xvf -
  • tar ztf archive.tgz
  • gzip -d archive.tgz | tar tvf -
  • tar cf archive.tgz

Frage 21

Frage
Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?
Antworten
  • cat < myapp | cat > file1.log
  • myapp 0>&1 | cat > file1.log
  • myapp | cat > file1.log
  • myapp | tee file1.log
  • tee myapp file1.log

Frage 22

Frage
Which of the following commands will change the quota for a specific user?
Antworten
  • edquota
  • repquota
  • quota -e
  • quota

Frage 23

Frage
Which of the following file permissions belong to a symbolic link?
Antworten
  • -rwxrwxrwx
  • +rwxrwxrwx
  • lrwxrwxrwx
  • srwxrwxrwx

Frage 24

Frage
What is the output of the following command? #echo "Hello World" | tr -d aieou
Antworten
  • Hello World
  • eoo
  • Hll Wrld
  • eoo Hll Wrld

Frage 25

Frage
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?
Antworten
  • -dirmax
  • -maxdepth
  • -maxlevels
  • -n
  • -s

Frage 26

Frage
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
Antworten
  • file /tmp/myfile.txt
  • echo "Hello" >/tmp/myfile.txt
  • sed -ie "s/1/2/" /tmp/myfile.txt
  • echo -n "Hello" >>/tmp/myfile.txt
  • touch /tmp/myfile.txt

Frage 27

Frage
What does the ? symbol within regular expressions represent?
Antworten
  • Match the preceding qualifier one or more times
  • Match the preceding qualifier zero or more times.
  • Match the preceding qualifier zero or one times.
  • Match a literal ? character.

Frage 28

Frage
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? (Choose TWO correct answers.)
Antworten
  • find /tmp -uid root -print
  • find -path /tmp -uid root
  • find /tmp -user root -print
  • find /tmp -user root
  • find -path /tmp -user root print

Frage 29

Frage
Which of the following commands changes the ownership of file.txt to the user dan and the group staff?
Antworten
  • chown dan/staff file.txt
  • chown dan:staff file.txt
  • chown -u dan -g staff file.txt
  • chown dan -g staff file.txt

Frage 30

Frage
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?
Antworten
  • chmod u=rwx,go=rx /bin/foo
  • chmod o+rwx,a+rx /bin/foo
  • chmod 577 /bin/foo
  • chmod 775 /bin/foo

Frage 31

Frage
Which of the following commands can be used to display the inode number of a given file?
Antworten
  • inode
  • ls
  • ln
  • cp

Frage 32

Frage
Which of the following commands are common Linux commands for file management? (Choose three correct answers.)
Antworten
  • copy
  • mv
  • move
  • cp
  • mkdir

Frage 33

Frage
Which of the following commands can be used to create a new file that is 100kB in size?
Antworten
  • dd
  • file
  • mkfile
  • touch

Frage 34

Frage
In compliance with the FHS, in which of the following directories are documentation files found?
Antworten
  • /usr/share/documentation
  • /usr/local/share/documentation
  • /var/share/doc
  • /usr/share/doc
  • /etc/share/doc

Frage 35

Frage
Which chown command will change the ownership to dave and the group to staff on a file named data.txt?
Antworten
  • chown dave/staff data.txt
  • chown –u dave –g staff data.txt
  • chown --user dave --group staff data.txt
  • chown dave:staff data.txt

Frage 36

Frage
Which of the following is the GRUB 2 boot loader configuration file?
Antworten
  • /dev/grub
  • The MBR
  • /boot/grub/grub.conf
  • /boot/grub/grub.cfg
  • /boot/grub/menu.lst

Frage 37

Frage
What program do you use to start or stop services when using the systemd initialization process?
Antworten
  • journalctl
  • systemctl
  • init
  • service
  • systemd

Frage 38

Frage
What is an advantage of vi over graphical text editors?
Antworten
  • vi is X based, so it is easier to use than other graphical text editors.
  • vi encodes text in EBCDIC, which is more flexible than Emacs’s ASCII.
  • vi’s mode-based operations permit it to handle non-English languages.
  • vi includes a built-in web browser and email client; Emacs doesn’t.
  • vi is smaller, so it can fit on compact emergency USB flash drive systems and embedded devices.

Frage 39

Frage
How do you exit vi’s insert mode to type command-mode commands?
Antworten
  • Press the ~ key.
  • Press the Esc key.
  • Press Ctrl+X followed by Ctrl+C.
  • Press the F10 key.
  • Press the Shift+Insert key combination.

Frage 40

Frage
What line in /etc/inittab would indicate that your default runlevel is 5?
Antworten
  • ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
  • id:5:initdefault:
  • si:5:sysinit:/etc/init.d/rcS
  • l5:5:wait:/etc/init.d/rc 5
  • 1:2345:respawn:/sbin/getty 38400 tty1
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