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Which of the following statements BEST describes binary?
Correct Answer: A
Binary is a notational system used to represent an "on" or "off" state in digital devices or systems. Binary uses only two symbols: 0 (off) and 1 (on). Binary is also known as base 2 notation, because each symbol represents a power of 2. Binary is the fundamental building block of all computer operations and data storage, as it can encode any type of information using sequences of bits (binary digits)1112. References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 2: Computing Basics3; What is Binary? - Definition from Techopedia