Understanding QR Codes

What are the black-and-white blocks of a QR Code called?

• Alignment markers

• Mask patterns

• Data modules

• Finder patterns

What is the purpose of the Finder patterns in a QR Code?

• To help scanners recognize the QR Code

• To store information

• To differentiate data from Finder patterns

• To invert colors of modules

What is the role of the Quiet Zone in a QR Code?

• To correct errors

• To help scanners locate Finder patterns

• To store additional data

• To determine the orientation

Which algorithm is used for error correction in QR Codes?

• Floyd-Warshall Algorithm

• Dijkstra's Algorithm

• Bellman-Ford Algorithm

• Reed Solomon Error Correction

How many mask patterns are available for QR Codes?

• Six

• Four

• Ten

• Eight