Linux+ Troubleshooting: Troubleshoot User Access

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Linux+ Troubleshooting: Troubleshoot User Access

In this lab, and will gain practical experience configuring quotas on the Linux file system, you will see how to install software for using quotas. You will also learn how to set up quota limits for users. Additionally, you will diagnose and troubleshoot login issues. Finally, you will enhance the security of user passwords on Ubuntu systems by implementing a password complexity policy.

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Lab Info

Level

Beginner

Last updated

Oct 11, 2025

Duration

1h 0m

Challenge

Learn About Quota Installation and Add Kernel Modules

To start this lab, you will learn how to install quota tools and the quota kernel module, you will confirm the installation, and add two modules.
Challenge

Set Quota Limits for Users

You will first activate the quota on the root filesystem and remount it with quota-related options. Then, you will create a quota limit for the user named ubuntu with a soft limit of 50M and a hard limit of 55M.
Challenge

Determine a User Quota

In this challenge, you will verify the user quota for the ubuntu user. Then, you will attempt to create a file that exceeds the quota.
Challenge

Diagnose Login Issues

Your goal is to diagnose a login issue for user u1. Begin by trying to log in with user u1, and then troubleshoot to identify the potential cause of the problem.
Challenge

Implement a Password Complexity Policy

To finish this lab, you will enhance the security of user passwords by implementing a password complexity policy. The policy should require passwords to have a minimum length of eight characters, and include a combination of uppercase letters, lowercase letters, numeric characters, and special characters.

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