Red Hat RH033 Online Practice Questions and Exam Preparation

Red Hat RH033 Online Questions & Answers

• Question 81:

  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 look for files whose last modified timestamp is exactly five days ago. Which of the following commands should you use to accomplish this task?

  A. find / -mtime 5
  B. find / -mtime +5
  C. find -mtime -5
  D. find / -mtime -5
  A. find / -mtime 5

  ---

  Explanation/Reference:

  This command looks for files on the system whose data has been changed exactly five days ago.

• Question 82:

  Which of the following is a multi-platform instant messaging client, based on a library named libpurple?

  A. Evolution
  B. mutt
  C. Pidgin
  D. Thunderbird
  C. Pidgin

  ---

  Explanation/Reference:

  Pidgin (formerly named Gaim) is a multi-platform instant messaging client, based on a library named

  libpurple. Libpurple has support for many commonly used instant messaging protocols, allowing a user to log into various different services from one application.

  What is Pidgin?

  Pidgin is a multi-protocol Instant Messaging client that allows a user to use all of his IM accounts at once. It is a free software that can work with AIM ,Gadu-Gadu, Jabber, ICQ ,IRC, MSN, SILC, XMPP, Yahoo!, and Zephyr Network. Anyone is

  free to use it and modify it, but if a user distributes his modifications, he must distribute the modified source code as well.

  The license of this communication software is Freeware, i.e. anyone can freely download and use this communication software.

  Answer options A and D are incorrect. Evolution and Thunderbird are Graphical mail clients in Linux.

  It is not an Instant Messenger.

  What is Evolution?

  Evolution is a full-featured personal and workgroup information management tool for Linux systems, and is the default email client for Red Hat Enterprise Linux. It provides all of the standard email client features, including powerful mailbox

  management, user-defined filters, and quick searches. Its additional feature is a flexible calendar/scheduler, which allows users to create and confirm group meetings and special events online.

  What is Thunderbird?

  Mozilla Thunderbird is a free, open source, cross-platform e-mail and news client developed by the

  Mozilla Foundation.

  Thunderbird can manage multiple e-mail, newsgroup and RSS accounts and supports multiple identities within accounts.

  Thunderbird incorporates a Bayesian spam filter, a white list based on the included address book, and can also understand classifications by server-based filters such as SpamAssassin. Thunderbird provides enterprise and government-grade

  security features such as SSL/TLS connections to IMAP and SMTP servers. It also offers native support for S/MIME secure email (digital signing and message encryption using certificates).

  Answer option B is incorrect. mutt is an email client that manages emails within a text-only environment. It is not an Instant Messenger.

  What is mutt? mutt is a powerful tool for managing email within a text-only environment. This tool is very important to access email even when a graphical interface is not available. Some of its strengths are handling of message threads and

  flexibility. When mutt sees a series of related messages, it displays each reply under the parent. mutt supports sending of attachments through a mail. The following example describes how a file can be attached to a mail: echo "Sending an

  attachment." | mutt -a backup.zip -s "attachment" [email protected]

  This command will send a mail to [email protected] with the subject (-s) "attachment", the body text "Sending an

  attachment.", containing the attachment (-a) backup.zip.

• Question 83:

  Fill in the blank with appropriate word. The------------ command copies files between hosts on a network. It uses ssh for data transfer, and uses the same authentication and provides the same security as ssh. It will ask for passwords or passphrases if they are needed for authentication.

  SCP

  Explanation/Reference:

  The scp command copies files between hosts on a network. It uses ssh for data transfer, and uses the same authentication and provides the same security as ssh. Unlike rcp, scp will ask for passwords or passphrases if they are needed for

  authentication. Any file name may contain a host and user specification to indicate that the file is to be copied to/from that host.

  Copies between two remote hosts are permitted.

• Question 84:

  You work as a Network Administrator for Perfect Solutions Inc. The company has a Linux- based network. You want to view the status of the current processes running on a Linux computer. You also want to append this information into the StatPro.txt file without deleting its content. Which of the following commands will you use to accomplish the task?

  A. ps StatPro.txt
  B. ps >> StatPro.txt
  C. ps | more StatPro.txt
  D. ps > StatPro.txt
  B. ps >> StatPro.txt

  ---

  Explanation/Reference:

  The ps command reports the status of processes that are currently running on a Linux computer.

  What is >> command?

  The >> command is used for storing the output generated by different commands. It creates a file specified to store the output. If the specified file already exists, it appends that file.

• Question 85:

  Which of the following commands is used to access Windows resources from Linux workstation?

  A. rsync
  B. mutt
  C. scp
  D. smbclient
  D. smbclient

  ---

  Explanation/Reference:

  smbclient is a command-line tool that provides access to SMB/CIFS shares.

  What is the smbclient command?

  smbclient is a command-line tool that provides access to SMB/CIFS shares. smbclient is a samba client with an "ftp like" interface. It is a useful tool to test connectivity to a Windows share. It can be used to transfer files, or to look at share

  names. In addition, it has the ability to backup and restore files from a server to a client and visa versa.

  Example:

  #smbclient -L server1

  The above command will list all shares on server1.

  Some useful options are as follows:

  

  Answer option C is incorrect. scp copies files between hosts on the Linux network. Answer option A is incorrect. rsync is a fast and extraordinarily versatile file copying tool. It can copy locally, to/from another host over any remote shell or to/

  from a remote rsync daemon.

  What is rsync?

  In computing, rsync is a software application for Unix systems. It synchronizes files and directories from one location to another while minimizing data transfer using delta encoding. It can copy or display directory contents and copy files,

  optionally using compression and recursion.

  In daemon mode, rsync listens to the default TCP port of 873, serving files in the native rsync protocol or via a remote shell such as RSH or SSH. In the latter case, the rsync client executable must be installed on both the local and remote

  hosts. Answer option B is incorrect. mutt is a small but very powerful text based program for reading electronic mail under Linux operating systems.

• Question 86:

  Fill in the blank with the correct answer to complete the statement below.

  The_________ permission is the minimum required permission that is necessary for a user to enter a directory and list its contents.

  Read

  Explanation/Reference:

  In Linux, the directories are simply special files that have an inode and a data section.

  The contents of the data section are a list of the directory's contents. In order to enter a directory or list its contents, a user must have the Read permission on the directory. The Write permission is required to modify that list.

• Question 87:

  John is a newly appointed Network technician at McNeil Inc. The company has a Linux- based

  Network. John is currently working on the /tmp directory. The /tmp directory has a file named file3.txt. John wants to copy this file in a subdirectory named backup of his home directory /home/John. Which of the following commands should John use to accomplish his task?

  Each correct answer represents a complete solution. Choose three.

  A. cp file3.txt /home/John/backup
  B. cp file3.txt /home/John/backup/
  C. cp file3.txt backup
  D. cp file3.txt ~/backup
  A. cp file3.txt /home/John/backup
  B. cp file3.txt /home/John/backup/
  D. cp file3.txt ~/backup

  ---

  Explanation/Reference:

  The cp command in option A will copy file3.txt to the destination /home/john/backup. The source and destination paths have been used correctly. In option D ~ refers to home directory so it is also the correct destination path. In option B appending / to the destination just tells the cp command explicitly that you are referring to a directory, not a file.

• Question 88:

  Which of the following commands is used to set down the interface and flush all its addresses?

  A. ifup
  B. ifdown
  C. ifconfig
  D. down
  B. ifdown

  ---

  Explanation/Reference:

  The ifdown command is used to set down the interface and flush all its addresses. It is possible to let ifdown check the interface if the interface is still used before setting it down. If the interface is used it may then discard the using processes or refuse setting it down. To enable this feature, check /etc/sysconfig/network/config file. Answer option A is incorrect. The ifup command is used to bring up a preconfigured interface for networking. It is usually invoked by the network script at boot time or by the PCMCIA/hotplug system. It can also be used to start interfaces manually on the command line. It activates the link, adds addresses and other parameters and sets up the routes for an interface.

  Answer option C is incorrect. The ifconfig commands displays the basic settings of a network device. Answer option D is incorrect. There is no such command as down.

• Question 89:

  Which of the following commands displays the inode number of a file in the Linux operating system?

  A. cat
  B. ls -i
  C. ls -l
  D. ls
  B. ls -i

  ---

  Explanation/Reference:

  A file's inode number can easily be found by using the ls command with the -i option. What is an inode? An inode is a data structure in Unix file systems, which holds key information about a file. A file is uniquely identified by its inode number. An inode contains the following information about a file: Owner's user identification number Owner's group identification number Device on which the inode resides Locking information of the file Mode and type of file Number of links to the file Size of the file Access and modification time of the file Modification time of the inode Addresses of the blocks of the file on the disk Answer option D is incorrect. ls without arguments lists the names of files and directories in the current directory. Answer option A is incorrect. The cat command only displays the contents of a file, not the file's inode number. Answer option C is incorrect. This command displays the long listing of files and directories. It will not display the inode number of a file.

• Question 90:

  Which ftp client command allows you to upload multiple files simultaneously using the "*" wildcard?

  A. mput
  B. mget
  C. put
  D. get
  A. mput

  ---

  Explanation/Reference:

  The mput command is used to upload multiple files simultaneously. Answer option C is incorrect. The put command uploads one file each time you use the command. It is not used to upload multiple files at a time. Answer option D is incorrect. The get command is used to download one file at a time. Answer option B is incorrect. The mget command is used to download multiple files at a time. It is not used to upload multiple files.