220-1201 Practice Question: A user complains that when they scan a…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  The ADF rollers are worn out

  Why it's wrong here

  Worn ADF rollers primarily impact the physical transport of paper through the scanner, leading to issues such as paper jams, misfeeds where pages are skipped, or documents feeding askew. These mechanical failures prevent the document from being correctly positioned for scanning or from passing through at all. However, worn rollers do not inherently cause the scanner's optical sensor to ignore one side of a document if it successfully feeds.

• ✗

  The scan resolution is set too low

  Why it's wrong here

  Scan resolution, measured in dots per inch (DPI), dictates the level of detail captured in the digital image. Setting the resolution too low would result in a scanned image that appears pixelated, blurry, or lacks fine detail, but it would still be a discernible image of the document's content. It would not cause an entire side of a document to appear completely blank, as the scanner's optical array would still capture available light data from the page.

• ✓

  The scan mode is set to simplex instead of duplex

  Why this is correct

  When a scanner is configured for simplex mode, it is specifically instructed by the software or driver to only capture and process images from one side of the document, typically the front-facing side. This setting intentionally disables or ignores the imaging capabilities for the reverse side, even if the scanner hardware is physically capable of duplex scanning. Consequently, any content on the back of a double-sided document will be omitted from the digital output, appearing as a blank page.

• ✗

  The document is too thick for the ADF

  Why it's wrong here

  An Automatic Document Feeder (ADF) is designed to handle documents within a specific range of paper weights and thicknesses. If a document exceeds this specified thickness, it is highly probable that the ADF mechanism will fail to feed the paper correctly, resulting in a paper jam, a misfeed, or the document simply not entering the scanner path. Such an issue would prevent the document from being scanned at all, rather than allowing it to pass through with only one side captured.

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