Practice for the LPI Linux Essentials exam with 12 exam-style practice questions, instant answer reveals, and concise explanations of every correct answer. Topics include: Which of the following options is used with tar to display the tar command's progress during execution?. Follow @CertPunch and visit certpunch.com for more certification practice exams and study content.
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What you will practice
- Which of the following options is used with tar to display the tar command's progress during execution?
- Which of the following is used to untar a tar archive file?
- Which of the following is an open-source relational database management system?
- What is a pre-integrated, self-contained system made by combining a software application (e.g., server softwa…
- Which of the following can you NOT install Linux on?
- What permissions would be represented by the octal 517?
Answers and explanations
Tap a question to expand the answer and the exam reasoning. Try to commit to your own pick first.
Q1. Which of the following options is used with tar to display the tar command's progress during execution?
Answer: B. -v
The -v option enables verbose mode, listing files as they are processed. While -c and -f are required to create archives, they operate silently without -v.
Q2. Which of the following is used to untar a tar archive file?
Answer: B. tar -x
The tar command combined with -x extracts contents from an archive. Avoid choosing untar, since it is not a standard Linux utility.
Q3. Which of the following is an open-source relational database management system?
Answer: B. MySQL
MySQL is a widely used open-source relational database management system. The other options are generic distractor terms and do not represent actual database software on the Linux platform.
Q4. What is a pre-integrated, self-contained system made by combining a software application (e.g., server software) with just enough operating system to run optimally on industry-standard hardware or a virtual machine?
Answer: D. Virtual appliance
A virtual appliance is a pre-integrated virtual machine image with just enough operating system to run a specific application. A standard virtual server typically includes a full operating system rather than a minimal one.
Q5. Which of the following can you NOT install Linux on?
Answer: D. Smartcard
Linux requires actual processing power and storage, making a basic smartcard an impossible target for installation. Remember that Linux is incredibly flexible, running on everything from desktop computers to cloud servers and mobile devices.
Q6. What permissions would be represented by the octal 517?
Answer: B. r-x–xrwx
The octal value 517 translates to read and execute for the owner, execute for the group, and full permissions for others. Remember to map each digit to the owner, group, and others, calculating the read, write, and execute values.
Q7. Which of the following information is provided in the default output of the who command?
Answer: C. Username, Terminal Identifier, Login Date and Time
The who command outputs the username, terminal line, and login date and time for currently active sessions. A common distractor includes sensitive data like passwords, but standard system utilities never display hashed passwords in plain text.
Q8. Which of the following is used to redirect the standard output of a command to a file?
Answer: A. 1>
Standard output is file descriptor one, so 1> redirects it to a file. Option two handles standard error, which is a common distractor for testing redirection proficiency.
Q9. Typing $ followed by pressing which key twice, in quick succession, will list all of the variables?
Answer: D. TAB
Pressing the tab key twice triggers shell completion, listing all variables after a dollar sign. This powerful shortcut dynamically reveals available system and user variables.
Q10. To see all the variables that are in the user's environment, use the _______ command.
Answer: B. printenv
The printenv command displays the values of environment variables. Remember that ping is a network utility, and processvar is a fabricated distractor term.
Q11. In order to rename the directory ~/documents/letters to ~/documents/archive, which of the following commands should be used?
Answer: A. mv ~/documents/letters ~/documents/archive
The mv command is used to rename or move files and directories in Linux. The cp command would merely create a copy, leaving the original directory intact.
Q12. Which information is used by a computer to connect to a typical local area network?
Answer: B. IP address
An IP address is the fundamental information required for a computer to communicate on a typical local area network. Without a valid IP address, the device cannot properly route traffic or interact with other machines on that network.
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