Tag: linux

Questions Related to linux

You forget the root password. You decide to reboot using a boot disk floppy. What do you need to do to recover the root password?

linux

  1. Mount the main partition, edit the /etc/passwd file to remove the root password, reboot.

  2. Mount the root partition, edit the /etc/passwd file to remove the root password, reboot.

  3. Mount the main partition, edit the /tmp/passwd file to remove the root password, reboot

  4. Mount the root partition, edit the /etc/passwds file to remove the root password, reboot

  5. none of the above

Show answer
Correct Option: B
Explanation:

To recover the root password, the user needs to boot the system using a boot disk floppy. Then, they need to mount the root partition and edit the /etc/passwd file to remove the root password. Option C is the correct answer.

Option A is incorrect because it does not provide any solution to recover the root password.

Option B is incorrect because it suggests to mount the main partition instead of the root partition. Editing the /etc/passwd file of the main partition will not affect the root password.

Option D is incorrect because it suggests to edit the /tmp/passwd file instead of the /etc/passwd file. The /tmp directory is used for temporary files, and editing the /tmp/passwd file will not affect the root password.

Option E is incorrect because it suggests to edit the /etc/passwds file instead of the /etc/passwd file. There is no such file as /etc/passwds, so this option is invalid.

The Answer is: C. Mount the root partition, edit the /etc/passwd file to remove the root password, reboot.

The previous system administrator put useless messages at login, what file do you edit to change the system message?

linux

  1. /etc/motd

  2. /etc/str

  3. /etc/strtms

  4. /etc/.conf

Show answer
Correct Option: A

Users on your network cannot print to a Linux printer. You decide to restart the printer daemon, which command would achieve that?
linux

  1. topq printer-name

  2. enable printer-name

  3. restart printer-name

  4. up printer-name

Show answer
Correct Option: C
Explanation:

To solve this question, the user needs to know the basic command to restart a printer daemon in Linux.

Now, let's go through each option and explain why it is right or wrong:

A. topq printer-name: This option is incorrect because the command "topq" is not a valid command in Linux. It does not exist and cannot be used to restart a printer daemon.

B. enable printer-name: This option is incorrect because the command "enable" is used to enable a printer, not restart the printer daemon. It does not restart the printer daemon.

C. restart printer-name: This option is incorrect because the command "restart" is not the correct command to restart a printer daemon in Linux. The correct command to restart the printer daemon is "systemctl restart cups".

D. up printer-name: This option is incorrect because the command "up" is not a valid command to restart a printer daemon. It does not exist in Linux.

The correct answer is:

The Answer is: C. restart printer-name

Which file does Linux use to resolve hostnames?
linux

  1. /etc/hostname.conf

  2. /etc/dns.conf

  3. /etc/host.conf

  4. /etc/resolve.conf

Show answer
Correct Option: C

What is "tin"?

linux

  1. Terminal Interpreter

  2. The command to change the time

  3. The command to compare text files

  4. A newsreader

Show answer
Correct Option: D

What are the file attributes for executing Perl programs?

linux

  1. 666

  2. 755

  3. 766

  4. 777

Show answer
Correct Option: B

What is bash?
linux

  1. Something you do to a watermelon

  2. A command to delete multiple files

  3. A network bit format

  4. A command shell

Show answer
Correct Option: D

What is the DOS LPT1 port in Linux?
linux

  1. /dev/lpt0

  2. /dev/lpt1

  3. /dev/lp0

  4. /dev/lp1

  5. DOSLPT1

Show answer
Correct Option: C

What is the minimum memory requirements for XFree86?
linux

  1. 640K

  2. 2MB

  3. 4MB

  4. 8MB

  5. 16MB

Show answer
Correct Option: D

You attempt to remove a directory, but Linux won't allow you, what is the most likely problem?

linux

  1. The directory name contains illegal characters

  2. You are not logged in as root

  3. The hard disk is full

  4. The directory is not empty

  5. None are likely problems

Show answer
Correct Option: D

AI Explanation

To answer this question, we need to understand the reasons why Linux might not allow the removal of a directory.

Option A) The directory name contains illegal characters - This option is unlikely to be the problem. While certain characters may be restricted in directory names, it is uncommon for this to prevent the removal of a directory.

Option B) You are not logged in as root - This option is also unlikely to be the problem. While being logged in as the root user provides greater privileges and permissions, it does not necessarily restrict the removal of a directory.

Option C) The hard disk is full - This option is also unlikely to be the problem. If the hard disk is full, it may prevent the creation of new files or directories, but it should not prevent the removal of existing ones.

Option D) The directory is not empty - This option is the most likely problem. Linux does not allow the removal of a directory if it is not empty. This is a safety measure to prevent accidental deletion of important files.

Option E) None are likely problems - This option is incorrect since option D is the most likely problem.

The correct answer is Option D - The directory is not empty. This option is correct because if the directory contains any files or subdirectories, Linux will not allow it to be removed until it is empty.