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?

  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


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.

  1. topq printer-name

  2. enable printer-name

  3. restart printer-name

  4. up printer-name


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?

  1. /etc/hostname.conf

  2. /etc/dns.conf

  3. /etc/host.conf

  4. /etc/resolve.conf


Correct Option: C

AI Explanation

To answer this question, you need to understand how Linux resolves hostnames.

Linux uses the /etc/host.conf file to resolve hostnames. This file contains the configuration settings for the hostname resolution process.

Let's go through each option to understand why it is correct or incorrect:

Option A) /etc/hostname.conf - This option is incorrect because Linux does not use the /etc/hostname.conf file to resolve hostnames.

Option B) /etc/dns.conf - This option is incorrect because Linux does not use the /etc/dns.conf file to resolve hostnames.

Option C) /etc/host.conf - This option is correct. Linux uses the /etc/host.conf file to resolve hostnames. This file contains the configuration settings for the hostname resolution process.

Option D) /etc/resolve.conf - This option is incorrect. While the /etc/resolve.conf file exists in Linux systems, it is used to configure the DNS (Domain Name System) resolver, not for hostname resolution.

The correct answer is C) /etc/host.conf. This option is correct because Linux uses the /etc/host.conf file to resolve hostnames.

  1. Terminal Interpreter

  2. The command to change the time

  3. The command to compare text files

  4. A newsreader


Correct Option: D
  1. Something you do to a watermelon

  2. A command to delete multiple files

  3. A network bit format

  4. A command shell


Correct Option: D
  1. /dev/lpt0

  2. /dev/lpt1

  3. /dev/lp0

  4. /dev/lp1

  5. DOSLPT1


Correct Option: C
  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


Correct Option: D