The CompTIA A+ Certification Prep 3: Networking/Security course focuses on keeping our networks and systems secure from outside threats and how to troubleshoot issues as they appear. If you want to jumpstart your career with your first tech support job, this third and final course in our CompTIA prep series is a necessary component to prepare you for the A+ certification exam successfully. Note: Prerequisite requirement includes completion of CT03013 CompTIA® A+ Certification Prep 1: Hardware and CT03014 CompTIA® A+ Certification Prep 2: Software.