Pass the RedHat RHCT RH033 Questions and answers with ExamsMirror

The following directories cannot be separated from the root filesystem:

/lib

/dev

/etc

/sbin

/bin

Answer option D is incorrect. /var can be separated from the root filesystem. Such filesystems are known as optional filesystems. Some of the optional filesystems are as follows:

/var

/usr

/opt

/home

When a user account is removed from a Linux system with the userdel command, the user account would get removed but some files and directories of that user may still remain on the system. To remove all items, the -r option is used with the userdel command.

The -f option forcibly removes the user account even if the user is still logged in. It also forces userdel to remove the user's home directory or his mail spool even if another user uses the same home directory or if the mail spool is not owned by the specified user.

Answer option C is incorrect. The -h option with the userdel command displays help messages and then exits.

Answer option D is incorrect. This command is incorrect. The -c option is not used with the userdel command.

The mv command is used to move a file from one location to another.

The jobs command lists the jobs that are running in the background and in the foreground. If the prompt is returned with no information, no jobs are present.

Syntax:

jobs [-p | -l] [-n] [-p] [-x] [job id]

Some important options used with jobs command are as follows:

Answer option A is incorrect. The top command is used to produce a frequently-updated list of processes. By default, the processes are ordered by percentage of CPU usage, with only the "top" CPU consumers shown. This command shows how much processing power and memory are being used, as well as other information about the running processes. The following figure demonstrates the output of the top command:

Answer option B is incorrect. The bg command can be used to resume in the background when a process is suspended.

Answer option C is incorrect. There is no such command as job.

The second column in the listing shows the number of hard links created for the file.

The Ctrl+Alt+Backspace key combination is used to terminate the X session.

Answer option A is incorrect. The Ctrl+Alt+F7 key combination is used to switch from a virtual console back to the X terminal.

Answer option C is incorrect. The Ctrl+Alt+Fn key combination is used to switch from graphical mode to the nth (n varies from 1-6) virtual console running in text mode.

Answer option D is incorrect. Ctrl+Alt+A is not a valid key combination to terminate the X session.

The /etc/X11/xdm/xdm-config file is the default configuration file of XDM. The X Window Display

Manager (XDM) is the default display manager for the X Window System. XDM is distributed as part of XFree86 and is configured by a series of files located in /etc/X11/XDM. Some of the important files of XDM are given below in the list:

Xaccess: It is used to control inbound requests from remote hosts.

Xresources: This file holds configuration information for XDM resources and the graphical login screen. It can be edited to modify the appearance of the XDM login screen. Xservers: This file is used to associate the X display names with either the local X server software or a foreign display such as an X terminal.

Xsession: This file contains the script XDM launches after a successful login.

Xsetup_0: This file defines how XDM will open. It is a script started before the graphical login screen.

It often includes commands to set colors, display graphics, or run other programs. This script is executed as root.

XDM-config: This file is used to configure XDM configuration resources.

Answer option B is incorrect. $HOME/.Xauthority is the user authorization file where XDM stores keys for clients to read.

Answer option D is incorrect. The /usr/bin/xterm file is the default session program of XDM.

Answer option C is incorrect. It is not a valid XDM configuration file.

The $! environmental variable represents the PID value of the last child process.

Answer option D is incorrect. The $$ environmental variable represents the PID of the running shell.

Answer option A is incorrect. The $? environmental variable results in the value zero if the last command was executed successfully, otherwise it displays the value one.

Answer option C is incorrect. It is an invalid Linux standard environmental variable.

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.

According to the scenario, John will use the chgrp bar foo command to accomplish the task. The chgrp (from change group) command is used by unprivileged users to change the group associated with a file. Unlike the chown command, chgrp allows regular users to change groups, but only to one of which they are a member. The general syntax of the chgrp command is as follows:

chgrp group target1 [target2 ..]

The group parameter indicates the new group with which the targets should be associated.

The target1 parameter indicates the files or directories for which the change should be made.

The target2 parameter indicates the optional additional files or directories for which the change should be made.

For example:

The above command changes the group associated with ttt to 'system', provided the executing user is a member of that group.

Answer option A is incorrect. In the chgrp command, first we write the group name and after that, we write the file name. But here just the opposite is written, so this command will not give the desired result.

Answer options D and B are incorrect. There is no such command as chgroup in Linux.