Red Hat RH033 Online Practice Questions and Exam Preparation

Red Hat RH033 Online Questions & Answers

• Question 91:

  Mark works as a Network Administrator for company.com Inc. The company has a Linux- based network. A printer is configured on the network. Mark wants to see the content of a print queue. Which of the following commands will he use to accomplish the task?

  A. lprm
  B. lpstat -a
  C. lpq
  D. lpr
  C. lpq

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  Explanation/Reference:

  The lpq command views the content of a print queue. Answer option D is incorrect. The lpr command sends a job to the queue to be printed. Answer option A is incorrect. The lprm command removes a job from the queue. Answer option B is incorrect. The lpstat -a command lists the configured printers.

• Question 92:

  Which of the following commands is used to count the number of bytes in a file?

  A. wc -l filename
  B. wc -c filename
  C. wc -m filename
  D. wc -w filename
  B. wc -c filename

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  Explanation/Reference:

  The -c option with the wc command is used to count the number of bytes in a file. It shows only the number of bytes used by a file.

  Answer option A is incorrect. The -l option with the wc command is used to count the number of lines in a file. It shows only the number of lines in a file. Answer option D is incorrect. The -w option with the wc command is used to count the

  number of words in a file. It shows only the number of words in a file. Answer option C is incorrect. The -m option with the wc command is used to count the number of characters in a file.

• Question 93:

  You work as the Network Administrator for Perfect solutions Inc. The company has a Linux- based Network. You are working as a root user. You want to know what the day will be on 20 July 2010.

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

  A. cal
  B. cal 20 July
  C. cal 7 2010
  D. date
  C. cal 7 2010

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  Explanation/Reference:

  The cal 7 2010 command will display the calendar of July 2010.

  What is the cal command?

  The cal command prints an ASCII calendar of the current month.

  Syntax: cal [month] [year]

  Given a month and year as arguments, cal displays the calendar for that particular month of the given year.

  When a single numeric argument (such as 2005) is given, cal will display a calendar for the given year. Always use a fourdigit year. For example, the command cal 05 will display the calendar for the year 05, not the year

  2005.

  Answer option B is incorrect. The cal 20 July command will display only the month and year, and not the date.

  Answer option A is incorrect. The cal command will display the calendar of the current month.

  Answer option D is incorrect. The date command will display the current date and time of the system.

• Question 94:

  Which of the following commands is used to view the PDF files in Linux?

  A. ps2pdf
  B. a2ps
  C. pdf2ps
  D. evince
  D. evince

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  Explanation/Reference:

  The evince utility is used to view the PDF files in Linux. Answer option A is incorrect. The ps2pdf utility creates the PDF files. Answer option C is incorrect. The pdf2ps utility converts the PDF files to PostScript. Answer option B is incorrect. The a2ps utility converts text to PostScript and sends it to the print queue or file.

• Question 95:

  Which of the following is NOT the feature of SELinux in the Red Hat enterprise Linux?

  A. SELinux applies to all users, including root.
  B. All process and files have a context.
  C. SELinux implements Mandatory Access Control (MAC) security in Red Hat Enterprise Linux.
  D. SELinux does not provide Kernel-level security.
  D. SELinux does not provide Kernel-level security.

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  Explanation/Reference:

  SELinux is an operating system based on Linux which includes Mandatory Access Control.

  The SELinux provides Kernel-level security for Red Hat Enterprise Linux. Answer options C, B, and A are incorrect. These are the features of SELinux.

  What are the features of SELinux?

  The features of SELinux are as follows:

  SELinux provides Kernal-level security.

  SELinux implements Mandatory access control (MAC) security in Red Hat Enterprise Linux.

  SELinux assigns every file and process on the system a context, identifying its type and purpose.

  SELinux enforces a policy that dictates which actions a given type of process may take on a given type of file

  SELinux applies to all users, including root.

• Question 96:

  Which of the following commands will you run to do case-sensitive search for files named foobar.png?

  A. locate -name foobar.png
  B. find -iname foobar.png
  C. grep-name foobar.png
  D. find -name foobar.png
  D. find -name foobar.png

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  Explanation/Reference:

  You will use find -name foobar.png command to do case-senstive search for files named foobar.png.

  What is the find command?

  The find command can perform a search based on a variety of search limitations. It searches through one or more directory tree(s) of a filesystem, locating files based on some user-specified criteria. By default, find returns all files in the

  current working directory. Further, find allows a user to specify an action to be taken on each matched file. Thus, it is an extremely powerful command for applying actions to many files. The find command can be used with a wild card (*), but it

  works best when we know the name of the file or directory we are looking for.

  The find command can search your system for files that comply with certain numeric criteria, such as the size of the file (-size), the number of links to the file (-links), the date of the last change to the files data (-mtime), or the date of the last

  time the file was read (- atime). All these criteria accept a numeric value. When a numeric value is provided to find, it looks for an exact match, more than the number, or less than the number. Answer option B is incorrect. The find -iname

  foobar.png command will do case-insensitive search for files named foobar.png.

  Answer option C is incorrect. The grep-name foobar.png is an invalid command.

  What is the grep command?

  The grep command is used to search for a specific pattern of text in a file. It helps administrators in searching large amounts of text for a certain error message or name. Answer option A is incorrect. The locate -name foobar.png is an invalid

  command.

  What is the locate command?

  The locate command is used to search for matching files in a database that is usually updated daily by a cron job. On the forthcoming Linux operating systems, this command is usually replaced by the slocate command, which stores

  permissions as well as paths and thus prevents users from prying into directories. One more advantage of the locate command is that it matches against any part of a pathname, not just the file itself.

• Question 97:

  You are a newly appointed Red Hat Technician for company Inc. The company has a Linux-based network. You want to install a package named httpd on your Linux system. Before installing the package, you want to get the list of those packages that httpd depends on. Which of the following commands will you use to accomplish the task?

  A. rpm deplist httpd
  B. yum deplist httpd
  C. yum list httpd
  D. rpm -qR httpd
  B. yum deplist httpd

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  Explanation/Reference:

  If the package is not yet installed, the yum deplist httpd command is used to get the list of packages that httpd depends on.Answer option C is incorrect. The yum list httpd command can be used to list various information about available

  packages. For example, it lists all available and installed packages and all packages with updates available in the yum repositories.

  Answer option D is incorrect. If the package is already installed, the rpm -qR httpd command is used to get the list of packages that this package depends on. Answer option A is incorrect. This command is incorrect. The deplist option is not

  used with the rpm command.

• Question 98:

  You work as a Network Administrator for Perfect Solutions Inc. The company has a Linux- based network. You are a root user on the Red Hat operating system. You want to know which directory you are currently working on. Which of the following tools would you use to accomplish the task?

  A. ls
  B. pwd
  C. mv
  D. cd
  B. pwd

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  Explanation/Reference:

  The pwd command-line utility is used to display the current working directory.

  What is the pwd command?

  The pwd command prints the complete pathname of the current working directory to the standard output.

  pwd [ -L | -P]

  The options are described as follows:

  OptionDescription

  -LDisplays the logical current working directory.

  -PDisplays the physical current working directory.

  If no options are specified, the -L option is assumed. Answer option A is incorrect. The ls command lists the contents of the current directory or the specified directory.

  Answer option D is incorrect. The cd command with no argument is used to move to your home directory.

  Answer option C is incorrect. The mv command is used to move and/or rename files and directories.

• Question 99:

  Which of the following commands can be used to convert all lowercase letters of a text file to uppercase?

  A. tac
  B. cat
  C. tr
  D. less
  C. tr

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  Explanation/Reference:

  You can use the tr command to convert all lowercase letters of a text file to uppercase. The tr

  command is used to translate, squeeze, and/or delete characters from standard input, writing to standard output. If you want to change all lowercase letters to uppercase, you will use the tr [a-z] [A-Z] command.

  Answer options B, A, and D are incorrect. The cat, tac, and less commands are used to display the output of the text file on the screen. These commands cannot translate the text from one form to another.

• Question 100:

  You work as a network administrator for company Inc. The company has a Linux-based network. You want to create a file named foobar.zip and put it into a directory named filesdir. Which of the following commands will you use to accomplish the task?

  A. unzip foobar.zip filesdir
  B. zip -r foobar.zip filesdir
  C. tar -tvf foobar.tar
  D. gunzip foobar.zip
  B. zip -r foobar.zip filesdir

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  Explanation/Reference:

  The zip -r foobar.zip filesdir command is used to create a file named foobar.zip and put it into the directory named filesdir. foobar.zip represents the file you are creating and filesdir represents the directory you want to put in the new zip file.

  The -r option specifies that you want to include all files contained in the filesdir directory recursively. Answer option A is incorrect. The unzip foobar.zip command is used to extract the contents of a zip file to the filesdir directory.

  Answer option D is incorrect. The gunzip foobar.zip command is used to expand the compressed file.

  Answer option C is incorrect. The tar -tvf foobar.tar command is used to list the contents of a tar file.