Network+ Performance Based Question walkthrough

Here we show a Network+ Performance Based Question(PBQ) for exam N10-008. It falls under CompTIA Exam Objective 4.3 "Given a scenario, network hardening techniques."
In this PBQ, you are asked to troubleshoot a workstation that after a router reconfiguration can no longer access the internet. Here is the scenario:
“After router reconfiguration, the workstation users report that they cannot connect to the Internet through their browser. Check the workstation’s IP configuration, ping the gateway and www.certblaster.com. Next check the router’s ACL to determine the probable cause and change the applicable rule by clicking the X. Go to Workstation 2 and try to access www.certblaster.com. ” The video shows how this is achieved.