CompTIA A+ Core 1 220-1201 Lessons

Every lesson is free to read, with three practice questions each. Work through them in order, or jump to the objective you need.

Practise with the exam simulator

  1. Inside a laptop: what comes out, what does not, and the order it comes out inObjective 1.1
  2. A bench you can actually build, and what it costs to prove each thing
  3. Displays, cameras and the antennas hidden in the lidObjective 1.1
  4. USB, Bluetooth, NFC and docking: connecting a mobile device to everything elseObjective 1.2
  5. Mobile connectivity: Wi-Fi, cellular data, tethering and hotspotsObjective 1.3
  6. Accounts, mail and synchronisation, and what 'synced' actually meansObjective 1.3
  7. Mobile fault finding: separating hardware, software and account problemsObjective 1.4
  8. The ports and protocols you have to know cold, and how to learn them onceObjective 2.1
  9. TCP, UDP, and what the transport layer decides for youObjective 2.1
  10. Wireless standards, frequencies and the channel plan nobody madeObjective 2.1
  11. DNS, DHCP and the services a network cannot run withoutObjective 2.1
  12. IPv4 addressing, subnets, and why the mask matters more than the addressObjective 2.2
  13. IPv6, APIPA, and choosing between static and dynamic addressingObjective 2.2
  14. Setting up a small office network: the router, the wireless and the defaultsObjective 2.2
  15. VPNs and remote access for the small officeObjective 2.2
  16. Copper, fibre, and terminating a cable that actually worksObjective 2.3
  17. Network tools: what a tester, a toner and an analyser each actually proveObjective 2.3
  18. CPUs: sockets, cores, and the thermal limit that decides real speedObjective 3.1
  19. RAM: types, channels, and what actually failsObjective 3.1
  20. Storage: spinning disks, solid state, and the interfaces they arrive onObjective 3.1
  21. RAID levels, and the array that is not a backupObjective 3.1
  22. Display connectors: HDMI, DisplayPort, and the adapter that will not workObjective 3.2
  23. USB, Thunderbolt, and cables that charge but do not carry dataObjective 3.2
  24. Printer types, and how each one actually puts ink on paperObjective 3.3
  25. Installing, sharing and securing a printerObjective 3.3
  26. Scanners, input devices and the peripherals that arrive with themObjective 3.3
  27. Motherboards: form factors, headers, and the firmware underneathObjective 3.4
  28. Power supplies, wattage, connectors and keeping the heat outObjective 3.4
  29. Hypervisors: type 1, type 2, and what each one is forObjective 4.1
  30. Building a virtual machine that does not fight youObjective 4.1
  31. Virtual desktops, thin clients, and what the endpoint still needsObjective 4.1
  32. Cloud service models, and who patches whatObjective 4.2
  33. Cloud characteristics and deployment modelsObjective 4.2
  34. The troubleshooting method, and why the order of the steps mattersObjective 5.1
  35. A machine that will not start: no power, no POST, no displayObjective 5.1
  36. Intermittent faults: heat, power, and the ones that come backObjective 5.1
  37. Storage failures: reading the warning signs and getting the files offObjective 5.1
  38. Display problems, from the panel to the cableObjective 5.1
  39. Printer faults you can diagnose without a service manualObjective 5.1
  40. A network connection that is not workingObjective 5.1
  41. Wireless problems: signal, interference and roamingObjective 5.1
  42. The multimeter, and what a reading actually tells youObjective 5.2
  43. Testing a power supply without guessingObjective 5.2
  44. Cable testers, toners and loopback plugsObjective 5.2
  45. Building a test kit, and knowing what each tool provesObjective 5.2