Red Hat RH033 Online Practice Questions and Exam Preparation

Red Hat RH033 Online Questions & Answers

• Question 41:

  You work as a Network Administrator for company.com Inc. The company has a Linux- based network. A job in the print queue is no longer in use. You want to remove this job from the print queue. Which of the following commands will you use to accomplish the task?

  A. lprm
  B. lpc
  C. lpq
  D. lpr
  A. lprm

  ---

  Explanation/Reference:

  The lprm command is used to remove a job from the print queue. Answer option C is incorrect. The lpq command is used to view the content of the print queue.

  Answer option D is incorrect. The lpr command sends a job to the print queue. Answer option B is incorrect. The lpc command is used to control the operation of a line printer system.

• Question 42:

  Which of the following commands does not save changes before exiting from the VI editor?

  A. :q!
  B. :q
  C. zz
  D. :w
  A. :q!

  ---

  Explanation/Reference:

  The :q! command is used to quit from the VI editor without saving.

  What is VI?

  The VI is a visual interactive text editor that allows a user to create, modify, and store files on a Linux computer. It works in the following modes:

  Command: This is the default mode of the command. Various commands can be used in this mode to manipulate the opened text.

  Input: In this mode, a user can insert text directly in the text screen area. Answer option D is incorrect. The :w command is used to write the file. Answer option C is incorrect. The zz command is used to save the file and quit. This is the

  easiest way to leave the editor, with only two keystrokes. Answer option B is incorrect. The :q command is used to quit after saving the file.

• Question 43:

  You work as the Network Administrator for McNeil Inc. The company has a Linux-based network.

  You are a root user on the Red Hat operating system. You want to see first five lines of the file /etc/passwd.

  Which of the following commands should you use to accomplish the task?

  A. head /etc/passwd
  B. head -n 5 /etc/passwd
  C. tail -n 5 /etc/passwd
  D. head 5 -n /etc/passwd
  B. head -n 5 /etc/passwd

  ---

  Explanation/Reference:

  The head -n 5 /etc/passwd command will show the first 5 lines of the file /etc/passwd.

• Question 44:

  You want to repeat the last command you entered in the bash shell. Which of the following commands will you use?

  A. history !#
  B. history !!
  C. history ##
  D. history !1
  A. history !#
  B. history !!

  ---

  

  Answer option A is incorrect. The history !# command shows the entire command line typed.

  Answer option D is incorrect. The history !n command shows the nth command typed. Since n is equal to 1 in this command, the first command will be shown. Answer option C is incorrect. It is not a valid command.

• Question 45:

  Which of the following commands is used to view failed login attempts on a user account?

  A. lastw
  B. lastb
  C. lastlog
  D. lastf
  B. lastb

  ---

  Explanation/Reference:

  The lastb command is used to view failed login attempts on a user account.

  What is the lastb command?

  The lastb command is used to view bad login attempts. The command searches in reverse order through the database file named /var/adm/btmp in order to display the required information.

  Answer option C is incorrect. The lastlog command reports the most recent logins of all users or of a given user.

  Answer options A and D are incorrect. There are no such commands as lastw and lastf in Linux.

• Question 46:

  John works as a Network Administrator for Perfect Solutions Inc. The company has a Linux-based network. John is working as the root user on the Linux operating system. He wants to delete all files whose names end with a number. Which of the following commands will John use to accomplish the task?

  A. rm *[0-9]
  B. rm [^0-9]
  C. rm ^[0-9]
  D. rm [0-9]*
  A. rm *[0-9]
  B. rm [^0-9]

  ---

  Answer option C is incorrect. The rm ^[0-9] command deletes all files whose names begin with a number.

  Answer option D is incorrect. The rm [0-9]* command also deletes all files whose names begin with a number.

• Question 47:

  Which of the following key-combinations is used to redo a change undone by a u command in vim?

  A. Ctrl-w, Arrow
  B. Ctrl-w, s
  C. Ctrl-r
  D. Ctrl-w, v
  C. Ctrl-r

  ---

  Explanation/Reference:

  The Ctrl-r key-combination is used to redo a change undone by a u command in vim. You can go back in time with the undo command. You can then go forward again with the redo command. If you make a new change after the undo

  command, the redo will not be possible anymore.

  Answer options B and D are incorrect. The Ctrl-w, s and Ctrl-w, v key-combinations are used to view a file in two windows in a single vim screen. Ctrl-w, s splits the screen horizontally and Ctrl-w, v splits the screen vertically. Answer option A

  is incorrect. The Ctrl-w key-combination with an arrow key is used to jump from one window to another. This will move you to the next window in whichever direction the arrow would normally move your cursor.

• Question 48:

  Which of the following commands are used to remove a package from a Linux system?

  Each correct answer represents a complete solution. Choose two.

  A. yum -rm packagename
  B. yum remove packagename
  C. yum -r packagename
  D. yum erase packagename
  C. yum -r packagename
  D. yum erase packagename

  ---

  Explanation/Reference:

  The yum remove packagename and yum erase packagename commands are used to remove a specified package from a Linux system. If any packages depend on this package, yum will prompt about this and give the option to remove those packages too. Answer options A and C are incorrect. These commands are incorrect. The -r and -rm options are not used with the yum command to remove a package from a Linux system.

• Question 49:

  Which of the following commands will you execute to fix other writable files in your home directory?

  A. find -perm -002 -exec chmod o-w {} \;
  B. find /home -type d -ls
  C. find ~ -perm -002 -exec chmod o-w {} \;
  D. find ~ -perm -002 -exec chmod -w {} \;
  C. find ~ -perm -002 -exec chmod o-w {} \;

  ---

  Explanation/Reference:

  You will use find ~ -perm -002 -exec chmod o-w {} \; command to fix other writable files in your home directory.

  Answer option B is incorrect. The find /home -type d -ls command is used to do an ls -l style listing of all directories in /home/.

  Answer options A and D are incorrect. There are no such commands in Linux.

• Question 50:

  You work as a Network Administrator for McNeil Inc. The company has a Linux-based network. A printer is configured on the network. You want to remove a file from a print queue. Which of the following commands will you use to accomplish this?

  A. LPR
  B. LPQDEL
  C. LPRM
  D. LPQ
  C. LPRM

  ---

  Explanation/Reference:

  The LPRM command is used to remove a file from a print queue. Answer option D is incorrect. The LPQ command reports the status of a print queue. Answer option A is incorrect. The LPR command is used to submit a file for printing. Answer option B is incorrect. There is no command such as LPQDEL in Linux.