Network Troubleshooting Lab

This lab is part of a series of lab exercises designed to supplement coursework and provide students with a hands-on training experience based on real-world applications. This series of lab exercises is intended to support courseware for CompTIA Network+® certification.

Networks are important to business processes, and when they are not fully operational, it is costly and frustrating to the users. Network administrators need to understand not just how to keep the network functional but also how to approach troubleshooting problems when a network is not fully operational. This lab will review troubleshooting and a methodology that will provide ideas on where to start in the problem-solving effort. This methodology will be used as a guide in troubleshooting two protocols widely used in networks and it is important to be able to diagnose issues with them. DNS and DHCP will be the two protocols focused on in this exercise.

This lab includes the following tasks:

Using the problem-solving process to troubleshoot a suspected DNS issue using CLI utilities and resolve the issue Configure an operational DHCP scope of addresses Observe the effects of a deactivated DHCP scope and resolve the problem