CompTIA A+ Core 1 (220-1101) Study Group Session Overview and Exam Preparation Insights

8 Jul 2026

CompTIAA+Core1220-1101exam_preparationnetwork_troubleshootingfirewall_rulesprotocolsportsDHCPHTTPSRDPSMBDNSSMTPpixel_densityperformance_based_questionshardware_diagnosticspower_management10-gigabit_networkingvirtualizationmacOSWindows

The video is a live A+ Core 1 (220-1101) study group session hosted by Professor Messer, covering exam preparation for CompTIA’s A+ certification. The session includes interactive questions on technical topics such as troubleshooting network interface cards (NICs) using a loopback plug, configuring firewall rules for protocols like DHCP (ports 67/68), HTTPS (443), RDP (3389), SMB (445), DNS (53), and SMTP (25), and explaining pixel density differences between displays based on physical width. The exam details provided include a 90-minute duration, a 100-900 scoring scale, and passing scores of 675 for Core 1 and 700 for Core 2, with the current exam version (released March 25, 2025) estimated to retire around September 2028. The session also demonstrates performance-based questions, a key exam format requiring hands-on knowledge of protocols, ports, and hardware diagnostics. Additional technical insights include power management for studio equipment, emphasizing 20-amp circuits and LED-based low-power setups, and the use of 10-gigabit networking for live streaming infrastructure. The video concludes with a discussion on running Windows applications on macOS via host-based virtualization as the optimal solution.