The CompTIA A+ Core 2 (220-1002) exam tests IT professionals on their understanding of operating systems, security, software troubleshooting, and operational procedures. In the CompTIA A+ (220-1002): Cert Prep series, expert Mike Meyers helps IT professionals prepare for the Core 2 exam. In this installment, Mike explores the internet, including underlying technologies such as Telnet, SSH, Remote Desktop Protocol, and HTTPS. He dives into power management on portable devices, including laptops and smartphones, and reviews standard management tasks for mobile devices, such as email and security. Mike also explains how to troubleshoot internet connections and mobile device problems such as lockouts and slow performance.