I prepared for the CompTIA A+ Core 1 220-1201 exam using Professor Messer's training course and study guides. I passed the exam on October 8th of 2026. The Core 1 version 15, which became the current version in 2024, includes the following exam objectives or domains: Mobile Devices (1.0), Networking (2.0), Hardware (3.0), Virtualization and Cloud Computing (4.0), and Hardware and Network Troubleshooting (5.0).