Linux Essentials Final Exam

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  • 1/72 Questions

    Which of the following are valid CPU types for intel-based platforms? (choose two)

    • 48 bit
    • 24 bit
    • 64 bit
    • 32 bit
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About This Quiz

The 'Linux Essentials Final Exam' assesses key knowledge areas of the Linux operating system, including kernel functions, Unix and Linux distinctions, programming languages used, and command line utilities. It provides a comprehensive evaluation of a learner's understanding of fundamental Linux concepts.

Linux Essentials Final Exam - Quiz

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  • 2. 

    Select all the applications that provide access to the Command Line Interface (CLI)? (Choose two)  

    • Virtual Terminal

    • Firefox

    • Opera

    • Terminal window

    Correct Answer(s)
    A. Virtual Terminal
    A. Terminal window
    Explanation
    The Virtual Terminal and Terminal window are the correct answers because they both provide access to the Command Line Interface (CLI). The Virtual Terminal is a feature in Linux operating systems that allows users to access the CLI directly. The Terminal window is a similar feature in macOS and Linux that provides a command line interface for executing commands and running scripts. Firefox and Opera are web browsers and do not provide access to the CLI.

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  • 3. 

    One way to install new software on a Linux system is to use a package management system

    • True

    • False

    Correct Answer
    A. True
    Explanation
    On a Linux system, one way to install new software is by using a package management system. This system allows users to easily search for, download, and install software packages from official repositories. It ensures that the software is compatible with the Linux distribution and handles dependencies automatically. This method is convenient and efficient as it simplifies the installation process and helps in managing software updates and removals.

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  • 4. 

    What option for the ls command will display all files, including hidden files?

    • -w

    • -H

    • -L

    • -a

    Correct Answer
    A. -a
    Explanation
    The option "-a" for the ls command is used to display all files, including hidden files. Hidden files in Unix-like operating systems are files that start with a dot (.) and are typically not shown in directory listings. By using the "-a" option, all files, including these hidden files, will be displayed in the output of the ls command.

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  • 5. 

    64 bit platforms can acess more memory than 32 bit platforms

    • True

    • False

    Correct Answer
    A. True
    Explanation
    This statement is true because 64-bit platforms have a larger address space compared to 32-bit platforms. In a 32-bit platform, the memory address is limited to 32 bits, allowing access to a maximum of 4GB of memory. On the other hand, a 64-bit platform has a 64-bit memory address, which allows for a much larger address space, theoretically up to 18.4 million TB of memory. Therefore, 64-bit platforms can indeed access more memory than 32-bit platforms.

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  • 6. 

    A network packet contains... (choose two)

    • The IP address of the destination machine

    • A hard drive partition

    • The name of ther outer

    • The IP address of the source machine

    Correct Answer(s)
    A. The IP address of the destination machine
    A. The IP address of the source machine
    Explanation
    A network packet contains the IP address of the destination machine and the IP address of the source machine. These two pieces of information are crucial for the packet to be properly routed and delivered to the intended recipient. The IP address of the destination machine helps the network infrastructure determine where the packet needs to be sent, while the IP address of the source machine allows the recipient to send a response back to the correct sender.

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  • 7. 

    When you execute the dmesg command, the system displays messages that are generated by the kernel.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that when the dmesg command is executed, it displays messages that are generated by the kernel. This means that the system will show any kernel-related messages or logs when the dmesg command is run. Therefore, the statement "True" is the correct answer as it accurately reflects the functionality of the dmesg command.

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  • 8. 

    Each user belongs to at least one group. True or False?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    This statement is true because it states that each user belongs to at least one group. This means that there are no users who do not belong to any group.

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  • 9. 

    The chown command can be used to change the owner and group of a file. True or False?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The chown command is a command-line utility in Unix-like operating systems that is used to change the owner and group of a file. By using this command, the user can modify the ownership and group of a file or directory to another user or group. Therefore, the given statement is true.

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  • 10. 

    Hidden files are files that begin with what character?

    • A plus (+)

    • A dash (-)

    • A period (.)

    • An asterisk (*)

    Correct Answer
    A. A period (.)
    Explanation
    Hidden files are files that begin with a period (.) in their file name. This is a common convention in many operating systems, such as Unix and Unix-like systems, to indicate that a file is hidden and should not be displayed in normal file listings. The use of a period as the first character in a file name is a way to hide files from casual users and prevent accidental modification or deletion.

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  • 11. 

    Which are appropriate editors for writing shell script? (choose two)

    • Nano

    • LibrOffice Writer

    • /bin/bash

    • Vi

    • Firefox

    Correct Answer(s)
    A. Nano
    A. Vi
    Explanation
    The appropriate editors for writing shell script are nano and vi. Nano is a simple and user-friendly text editor that is commonly used for editing files in the terminal. Vi, on the other hand, is a powerful and versatile text editor that is widely used by experienced users. Both editors provide the necessary features and functionality for writing and editing shell scripts effectively. LibrOffice Writer, Firefox, and /bin/bash are not appropriate editors for writing shell scripts as they are not specifically designed for this purpose.

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  • 12. 

    Only servers have hostnames.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement "Only servers have hostnames" is incorrect. Hostnames are used to identify any device connected to a network, not just servers. Devices such as computers, laptops, smartphones, printers, and even IoT devices can have hostnames assigned to them. Therefore, the correct answer is False.

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  • 13. 

    The /var directory has files that change over time. True or False?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The /var directory in a computer system typically contains files that are subject to change over time. This directory is often used to store variable data files, such as log files, temporary files, and spool files. These files are constantly being updated or modified, reflecting the dynamic nature of the system's operations. Therefore, it can be concluded that the statement "The /var directory has files that change over time" is true.

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  • 14. 

    Which environment variable contains a list of directories that is searched for commands to execute?

    • PATH

    • EXEC

    • PS1

    • PS2

    Correct Answer
    A. PATH
    Explanation
    The PATH environment variable contains a list of directories that is searched for commands to execute. When a command is entered in the terminal, the system looks for the executable file in the directories listed in the PATH variable. If the command is found in one of the directories, it can be executed directly. This allows users to run commands from anywhere in the system without having to specify the full path to the executable file.

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  • 15. 

    The top-level directory on a Linux system is represented as:

    • /

    • /root

    • /home

    • C:

    Correct Answer
    A. /
    Explanation
    The top-level directory on a Linux system is represented as "/". This is because the forward slash (/) is used as the root directory in Linux. The root directory is the starting point for the file system hierarchy and contains all other directories and files in the system. The other options mentioned (/root, /home, C:) are not the top-level directory, but rather specific directories within the file system.

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  • 16. 

    If you wanted to set up a blog, which software would be most helpful?

    • MySQL

    • Postfix

    • WordPress

    • Dovecot

    • Samba

    Correct Answer
    A. WordPress
    Explanation
    WordPress would be the most helpful software for setting up a blog. WordPress is a popular content management system (CMS) specifically designed for creating and managing blogs. It provides an easy-to-use interface, a wide range of customizable themes and plugins, and extensive documentation and support. With WordPress, users can easily create and publish blog posts, manage media files, customize the appearance of their blog, and interact with readers through comments and social media integration. It is a widely used and trusted platform for bloggers of all levels of experience.

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  • 17. 

    A successful command will print output to STDOUT True or False?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A successful command will print output to STDOUT. This means that when a command is executed successfully, it will display the desired output on the standard output stream. Therefore, the statement "A successful command will print output to STDOUT" is true.

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  • 18. 

    The echo command:

    • Tests a variable for duplication

    • Ducplicates the input stream to the output stream

    • IS used for variable assignment

    • Is used to ouput text to the console

    • Copies variables from one to another

    Correct Answer
    A. Is used to ouput text to the console
    Explanation
    The echo command is used to output text to the console. It allows the user to display messages or variables on the screen during the execution of a script or command. This can be useful for providing feedback or displaying information to the user.

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  • 19. 

    Which of the following would be considered a host?

    • A printer attached to the network via an IP address

    • A CDROM

    • The computer's hard drive

    • A network cable

    Correct Answer
    A. A printer attached to the network via an IP address
    Explanation
    A printer attached to the network via an IP address would be considered a host because it is a device connected to the network that can send and receive data. It has its own unique IP address, allowing it to communicate with other devices on the network.

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  • 20. 

    Is the following path absolute or relative? Sysadmin/Documents

    • Relative

    • Absolute

    Correct Answer
    A. Relative
    Explanation
    The given path "Sysadmin/Documents" is a relative path. A relative path is a path that is relative to the current working directory or another given starting point. In this case, the path is relative to the current working directory, which means that it specifies the location of the "Documents" folder within the "Sysadmin" directory, relative to the current location of the user or program.

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  • 21. 

    If you wanted to create and print an invoice, which software could you use?

    • GNOME

    • Compiz

    • Firefox

    • LibreOffice

    • Evolution

    Correct Answer
    A. LibreOffice
    Explanation
    LibreOffice is a software suite that includes various applications, such as Writer, Calc, and Impress. It provides a wide range of tools for creating and editing documents, spreadsheets, and presentations. One of the applications within LibreOffice is LibreOffice Writer, which can be used to create and print an invoice. It offers features like templates, formatting options, and the ability to insert tables and images, making it suitable for creating professional-looking invoices. Therefore, LibreOffice is the most appropriate software choice for creating and printing an invoice.

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  • 22. 

    Which of the following are traits of a multiuser operating system? (Choose three)

    • An administrative user gets a dedicated CPU

    • Users can protect their information from other users

    • Resources are shared between users

    • Many users can log in simultaneously with a unique account

    • Each user can only log in once per day.

    Correct Answer(s)
    A. Users can protect their information from other users
    A. Resources are shared between users
    A. Many users can log in simultaneously with a unique account
    Explanation
    A multiuser operating system allows multiple users to access and use the system simultaneously with their unique accounts. This means that many users can log in at the same time, each with their own credentials. In such a system, resources like CPU, memory, and storage are shared between users, allowing them to perform tasks and run applications concurrently. Additionally, a multiuser operating system provides mechanisms for users to protect their information from other users, ensuring privacy and security.

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  • 23. 

    Linux is written in:

    • C

    • NET

    • C++

    • Java

    • Perl

    Correct Answer
    A. C
    Explanation
    Linux is written in C because C is a low-level programming language that provides direct access to memory and hardware, making it suitable for developing an operating system like Linux. C is known for its efficiency, speed, and ability to handle system-level tasks. Additionally, C has a large community and extensive libraries that support Linux development.

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  • 24. 

    Is the following path absolute or relative? /etc/ppp

    • Relative

    • Absolute

    Correct Answer
    A. Absolute
    Explanation
    The given path "/etc/ppp" is an absolute path because it starts with a forward slash ("/") which indicates the root directory. Absolute paths provide the complete and exact location of a file or directory in the file system, regardless of the current working directory.

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  • 25. 

    A service is...

    • A file that contains configuration information

    • Another name for a computer's hostname

    • A feature provided by one computer to another

    • Like an IP address

    Correct Answer
    A. A feature provided by one computer to another
    Explanation
    A service is a feature provided by one computer to another. This means that one computer offers a specific functionality or capability that can be accessed and utilized by another computer. It is not a file containing configuration information, another name for a computer's hostname, or like an IP address.

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  • 26. 

    Which user can view the /etc/shadow file?

    • The root user

    • No users

    • Any member of the password group

    • All users

    Correct Answer
    A. The root user
    Explanation
    The root user is the correct answer because the /etc/shadow file is a sensitive file that contains encrypted password hashes for user accounts. Only the root user, who has administrative privileges, can access and view this file. Other users, including members of the password group, do not have the necessary permissions to view the /etc/shadow file.

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  • 27. 

    A server is likely to be running a graphical mode. True or False?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    A server is typically designed to operate in a headless mode, without a graphical user interface (GUI). This is because servers are usually managed remotely and do not require a GUI for their primary functions. Instead, servers are often operated through command-line interfaces or accessed through remote management tools. Therefore, it is unlikely for a server to be running in a graphical mode.

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  • 28. 

    UIDs 1-500 are usually reserved for what kind of users?

    • Are not used for user accounts, but for group accounts

    • System accounts, such as server processes

    • Remote log-in accounts

    • Log-in (human) users

    Correct Answer
    A. System accounts, such as server processes
    Explanation
    UIDs 1-500 are typically reserved for system accounts, such as server processes. These accounts are used by the operating system to execute various tasks and manage system resources. They are not associated with log-in users or remote log-in accounts, which have different UID ranges. Group accounts also have their own separate range of UIDs and are not included in the 1-500 range.

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  • 29. 

    Which of the following are examples of desktop software? (Choose Two)

    • Web server

    • Web browser

    • File share

    • Compiler

    • Music Player

    Correct Answer(s)
    A. Web browser
    A. Music Player
    Explanation
    A web browser and a music player are examples of desktop software. A web browser is a software application used to access and view websites, while a music player is a software program used to play audio files on a computer. Both of these applications are typically installed and run on a desktop computer rather than being accessed through a web server or shared over a network like a file share.

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  • 30. 

    Error messages generated by commands are sent where by default?

    • STDIN

    • Log files

    • STDERR

    • STDOUT

    Correct Answer
    A. STDERR
    Explanation
    When error messages are generated by commands, they are sent to the STDERR stream by default. STDERR is a standard stream used for error output, separate from the STDOUT stream which is used for regular output. This separation allows for easier identification and handling of errors. Log files are used to store logs and not specifically for error messages. STDIN is used for input, not output.

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  • 31. 

    Which of the following is true about graphical mode? (Choose three)

    • You have menus and tools to help you find what you are looking for

    • You access this mode by logging into a graphical display

    • After login, you are provided with a desktop

    • After login, you are provided with a command prompt

    • You cannot use your mouse

    Correct Answer(s)
    A. You have menus and tools to help you find what you are looking for
    A. You access this mode by logging into a graphical display
    A. After login, you are provided with a desktop
    Explanation
    In graphical mode, users are provided with menus and tools to assist them in finding what they are looking for. This mode is accessed by logging into a graphical display, and after logging in, users are provided with a desktop.

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  • 32. 

    Which of the following is provided by a graphical interface that isn't normally provided to a non graphical interface? (Choose four)

    • Desktop

    • Shell

    • Windows

    • Popups

    • Menus

    Correct Answer(s)
    A. Desktop
    A. Windows
    A. Popups
    A. Menus
    Explanation
    A graphical interface provides a desktop, which is a visual representation of the computer screen that allows users to organize and access files and applications. It also provides windows, which are individual frames that contain the content of specific applications or files. Popups are small windows that appear temporarily on top of the main window, providing additional information or options. Menus are lists of options that appear when a user clicks on a specific area, providing a way to access various functions or commands. These features are not typically provided in a non-graphical interface, which relies on text-based commands and lacks visual elements.

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  • 33. 

    Which of the following commands sets "other" permissions on file to r-x?

    • Chmod 774 file

    • Chmod 776 file

    • Chmod 775 file

    • Chmod 777 file

    Correct Answer
    A. Chmod 775 file
    Explanation
    The correct answer is "chmod 775 file". In Linux, the chmod command is used to change the permissions of a file or directory. The first digit represents the owner's permissions, the second digit represents the group's permissions, and the third digit represents the permissions for others. The number "7" represents read, write, and execute permissions, while the number "5" represents read and execute permissions. Therefore, "chmod 775 file" sets the owner and group permissions to read, write, and execute, and the other permissions to read and execute.

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  • 34. 

    A file begins with #!/bin/csh. This means:

    • C Shell compatibility mode is enabled

    • Running the script will invoke /bin/csh to interpret the rest of the file

    • The operator should not be using /bin/csh

    • This is a Peri script

    • Nothing, this is a comment

    Correct Answer
    A. Running the script will invoke /bin/csh to interpret the rest of the file
    Explanation
    The correct answer is "Running the script will invoke /bin/csh to interpret the rest of the file." This is because the #!/bin/csh at the beginning of the file is known as a shebang or hashbang, and it specifies the interpreter that should be used to execute the script. In this case, it indicates that the script should be run using the C Shell (/bin/csh).

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  • 35. 

    The Samba application is a:

    • Mail Server

    • Security Server

    • File Server

    • Web Server

    Correct Answer
    A. File Server
    Explanation
    The Samba application is a file server. Samba is an open-source software suite that enables file and print services for Windows clients in a Linux/UNIX environment. It allows Windows clients to access files and printers on the server as if they were local resources. Samba implements the SMB/CIFS network protocol, which is used for file sharing and resource discovery on Windows networks. Therefore, Samba primarily functions as a file server, facilitating file sharing and storage between Windows and Linux/UNIX systems.

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  • 36. 

    A pair of single quotes will prevent the shell from interpreting any metacharacter. True or False?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A pair of single quotes will prevent the shell from interpreting any metacharacter. This means that any special characters or symbols within the single quotes will be treated as literal characters and not as commands or instructions by the shell. Therefore, the given statement is true.

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  • 37. 

    Which of the following commands will direct error messages to the file, error.log? (choose one)

    • Ls /root > error.log

    • Ls /root >> error.log

    • Ls /root 2> error.log

    • Ls /root $> error.log

    Correct Answer
    A. Ls /root 2> error.log
    Explanation
    The correct answer is "ls /root 2> error.log". This command uses the "2>" operator to redirect error messages to the file "error.log". The "2" represents the file descriptor for standard error, and the ">" symbol indicates that the output should be redirected to a file. Therefore, any error messages generated by the "ls /root" command will be saved in the "error.log" file.

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  • 38. 

    A pipe allows you to...

    • Send the same input to multiple commands

    • Send the output of one command to another

    • Send the output of a command to a file

    • Type multiple commands at one prompt

    Correct Answer
    A. Send the output of one command to another
    Explanation
    A pipe allows you to redirect the output of one command and use it as the input for another command. This is useful when you want to perform a series of operations on the output of a command without saving it to a file first. By using a pipe, you can streamline your workflow and avoid unnecessary intermediate steps.

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  • 39. 

    Which command will display the UID, GID and grouops you current user belongs to?

    • Id

    • Whoami

    • Who

    • About

    Correct Answer
    A. Id
    Explanation
    The command "id" is used to display the UID (User ID), GID (Group ID), and the groups that the current user belongs to. This command provides information about the user's identity and group memberships.

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  • 40. 

    Channel 2 is:

    • STDERR

    • STDIN

    • STDALL

    • STDOUT

    Correct Answer
    A. STDERR
    Explanation
    Channel 2 refers to STDERR, which stands for Standard Error. STDERR is a standard output stream that is used to display error messages and diagnostics from a program. It is separate from STDOUT (Standard Output), which is used for normal program output. By redirecting STDERR, error messages can be separated from regular output, allowing for better error handling and debugging.

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  • 41. 

    Which command will display the users that are currently logged in to the system?

    • Who

    • About

    • Whoami

    • Id

    Correct Answer
    A. Who
    Explanation
    The "who" command is used to display the users that are currently logged in to the system. It provides information such as the username, terminal, login time, and remote host. This command is helpful for system administrators to monitor user activity and manage resources effectively.

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  • 42. 

    Only one set (user, group, other) of permission can be changed at once using the symbolic method.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. In the symbolic method of changing permissions, it is possible to change multiple sets of permissions simultaneously. Each set (user, group, other) can be modified independently using symbols such as +, -, or =, allowing for the modification of multiple sets at once. Therefore, the statement that only one set of permission can be changed at once using the symbolic method is incorrect.

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  • 43. 

    Source code refers to:

    • The version of a program that the computer runs on the CPU

    • The license that dictates how you may use and share the software

    • The interface that software uses to talk to the kernel

    • A human readable version of computer software

    Correct Answer
    A. A human readable version of computer software
    Explanation
    Source code refers to a human readable version of computer software. It is the original version of a program that is written in a programming language and can be understood by programmers. It is not the version that the computer runs on the CPU, the license that dictates how you may use and share the software, or the interface that software uses to talk to the kernel.

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  • 44. 

    The command man -k is the same as the command apropos. True or false?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because both the "man -k" command and the "apropos" command serve the same purpose, which is to search for commands or keywords in the system's manual pages. They provide a list of relevant manual pages that contain the searched keyword or command, allowing users to find the appropriate documentation for their needs.

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  • 45. 

    The /tmp directory is a temporary directory and will not exist on a system at all times. True or False?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false. The /tmp directory is a standard directory in most Unix-like operating systems, including Linux. It is used for temporary storage and is typically available on a system at all times.

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  • 46. 

    The "sticky bit" permission...

    • Prevents others from removing files they don't own from a common directory.

    • Change the group ownership fo existing files in a directory

    • Prevents other from overwriting files they don't own in common directories.

    • Sets the group ownership of any new file created in a directory.

    Correct Answer
    A. Prevents others from removing files they don't own from a common directory.
    Explanation
    The "sticky bit" permission prevents others from removing files they don't own from a common directory. This means that even if a user has write permissions in the directory, they cannot delete or remove files owned by other users. The sticky bit is commonly used for directories that are shared among multiple users, such as the /tmp directory, to ensure that files cannot be accidentally or maliciously deleted by unauthorized users.

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  • 47. 

    What does this shell cript do? FOO=/tmp/foo if [ ! –d $FOO ]; then mkdir $FOO fi

    • Nothing, since there is a problem with the conditions in the if statement

    • Makes the /tmp/foo directory if a file by that name exists

    • Creates /tmp/foo if it does not exists

    • Creates /tmp/foo and raises an error if there is a problem

    • Outputs a message to the screen

    Correct Answer
    A. Creates /tmp/foo if it does not exists
    Explanation
    The given shell script checks if the directory "/tmp/foo" does not exist. If it does not exist, the script creates the directory. Therefore, the correct answer is "Creates /tmp/foo if it does not exist".

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  • 48. 

    Which files contain user account information? (choose two)

    • /etc/passwd

    • /etc/shadow

    • /etc/group

    Correct Answer(s)
    A. /etc/passwd
    A. /etc/shadow
    Explanation
    The correct answer is /etc/passwd and /etc/shadow. The /etc/passwd file contains basic user account information such as username, user ID, home directory, and login shell. The /etc/shadow file, on the other hand, stores the encrypted passwords for user accounts. These two files are commonly used in Unix-based systems to manage user accounts and authentication. The /etc/group file, mentioned as an option in the question, contains information about system groups and their members, but it does not specifically contain user account information.

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  • 49. 

    Most of nano's commands take the form of:

    • Escape followed by another character

    • Mouse clicks

    • The F1 through F12 function keys

    • Alt and another character

    • Control and another character

    Correct Answer
    A. Control and another character
    Explanation
    The correct answer is "Control and another character" because in nano, most commands are executed by pressing the Control key along with another character on the keyboard. This combination allows users to perform various actions such as saving the file, copying and pasting text, searching for specific words, and many more. By using the Control key in combination with another character, users can navigate and manipulate the text efficiently within the nano text editor.

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Quiz Review Timeline (Updated): Jan 15, 2025 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 15, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 22, 2018
    Quiz Created by
    Tomdedude23
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