CompTIA · A+ 220-1201
Power supplies and cooling
A+ 220-1201 · Lesson 15 of 22 · 1:41:07
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In this lesson
Prepare for the CompTIA A+ Core 1 (220-1201) exam. In this lesson: 110 to 120 and 220 to 240 volt input, 12, 5, and 3.3 volt outputs, the 20+4 pin connector, modular and redundant power supplies, wattage and 80 PLUS efficiency, heat sinks, fans, thermal paste, and liquid cooling. Includes three original practice questions.
Preview the topics
- Brightwave’s archive server must keep running even if one of its power supplies fails. What should the server have?
- After a powerful graphics card is added, a workstation shuts down whenever the card works hard, and its temperatures look normal. What is the most likely fix?
- After a technician removes and reinstalls a processor’s heat sink, the processor overheats within minutes. What was most likely missed?