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Objective 3.1220-1201

3.1 Compare and contrast display components and attributes.

Objective 3.1 sits in Hardware, which carries 25% of the A+ Core 1 exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.

Objective title verbatim from the official objectives. CompTIA exam page ↗

A worked example

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3-1HardwareModerate

A designer says scrolling on a new laptop panel looks smoother than on the 60 Hz monitor beside it, and battery life has not suffered. Which display attribute accounts for that?

Adaptive refresh up to 120HzCorrect · your answerCorrect. The rate rises for motion and drops back when the image is static.
A fixed 120Hz refresh rateA rate pinned at the ceiling would smooth motion and cost power the whole time.
A 254 pixel per inch densityPixel density controls how fine detail looks and has no effect on motion.
A 1,000,000:1 contrast ratioContrast describes the gap between the darkest and brightest output, measured on still images.

Correct.

Concept

Refresh rate sets how often the panel is redrawn each second, and a panel that can vary that rate spends the high rate only on moving content, so smoothness costs power only while it is used.

Why A

Smoother motion with unchanged runtime is what a variable ceiling produces, since the panel falls back to lower rates whenever the image is still.

Source

#display#refresh-rate#panel

Now you: objective 3.1 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

3-1HardwareModerate

A user finds text on an external panel looks soft after picking a lower resolution to make items larger. What should the technician try first?

Sample question 2 of 3

3-1HardwareHard

A reviewer measures 500 nits on a white document window, yet the panel is rated at 1600 nits peak. Which reading of the specification resolves that?

Sample question 3 of 3

3-1HardwareEasy

A quotation lists a conference room panel as 8K at 60 Hz. Which pixel grid does that resolution denote?

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