Which term refers to describing a system by focusing on essential aspects and ignoring details?

Which term refers to describing a system by focusing on essential aspects and ignoring details?

• A. Iteration
• B. Abstraction
• C. Octal
• D. Decimal

Answer: (B)

Abstraction is describing a system by focusing on essential aspects and ignoring details. It helps you model and reason about complex things by showing only what matters for a given purpose, while leaving out the rest. In practice, you might interact with a programming interface without needing to know how it works inside; the interface exposes what it does and how to use it, not the internal steps. The other terms don’t fit. Iteration means repeating actions, which is about process control, not about what features of a system are essential. Octal and decimal are numeral bases used to represent numbers, not the idea of focusing on essential aspects of a system.

Abstraction is describing a system by focusing on essential aspects and ignoring details. It helps you model and reason about complex things by showing only what matters for a given purpose, while leaving out the rest. In practice, you might interact with a programming interface without needing to know how it works inside; the interface exposes what it does and how to use it, not the internal steps. The other terms don’t fit. Iteration means repeating actions, which is about process control, not about what features of a system are essential. Octal and decimal are numeral bases used to represent numbers, not the idea of focusing on essential aspects of a system.