CompTIATech+
Domain 1Objective 3
Units of Measure FC0-U71 Practice Questions (Page 5)
Part of the Tech concepts and terminology domain, which accounts for 13% of the FC0-U71 exam. CompTIA does not publish an official question count, but from its 60-minute exam (~25–40 total, ~3–5 in this domain), expect 1–1 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)
26questions here
6free pages
8concepts
13%of the exam
Questions 21–25
- 21
A technician is measuring the output of a USB port on a laptop. The port is rated for 5 V and 0.9 A. The technician measures the actual voltage at 4.85 V. What is the most likely explanation for the lower-than-rated voltage?
Select an answer first - 22
Which component is specifically designed to have a certain amount of resistance?
Select an answer first - 23
A technician is sizing a power supply for a new desktop PC. The CPU is rated at 65 W, the GPU at 150 W, and the motherboard, RAM, and drives together draw about 75 W. The power supply should operate at no more than 80% of its rated capacity for efficiency. What is the minimum power supply rating the technician should select?
Select an answer first - 24
A USB port supplies 500 milliamperes. How many amperes is that?
Select an answer first - 25
An engineer is designing a voltage divider to reduce a 12 V supply to 5 V for a sensor. The engineer selects a 10 kΩ resistor for the top of the divider. What resistance is needed for the bottom resistor to produce approximately 5 V at the output?
Select an answer first
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