ITPEC IP October 2018 Question 74
ITPEC IP October 2018 — Question 74 of 100
A QR code uses position-detection patterns so a reader can determine its orientation and scan direction. The prominent square finder patterns allow rapid detection from different angles and support two-dimensional decoding.
Answer (a)
Why not others:
- a QR code stores data in two dimensions and is space-efficient compared with a one-dimensional barcode
- it can encode more than only numbers and alphabetic characters
- it is a matrix code, not a stack of separate one-dimensional barcodes
Key rule: QR codes arrange modules in a square matrix and use finder, alignment, timing, and error-correction structures for reliable reading.
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