ITPEC IP April 2020 Question 78
ITPEC IP April 2020 — Question 78 of 100
A two-dimensional code stores more information than a one-dimensional barcode in an equivalent area. It encodes data across both horizontal and vertical dimensions, giving it much greater density.
Answer (c)
Why not others:
- data is not read horizontally only
- many 2D codes include error correction, not merely error detection
- matrix codes can usually be read across a broad range of orientations because readers locate their position patterns
Key rule: Two-dimensional symbols gain capacity and robustness by arranging encoded elements across an area rather than along one line.
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