Which term denotes the two-digit base used in digital computing, consisting only of 0 and 1?

• A. Numbering System (Binary)
• B. Network Topology
• C. NIC Teaming
• D. Nonrepudiation

Answer: (A)

Data representation in computing rests on numeral systems, and binary is the one that uses exactly two symbols: 0 and 1. This base-2 system aligns with how digital circuits work, since transistors switch between two states (on and off), which map cleanly to 1s and 0s. That simplicity makes binary the foundation of all data processing in digital devices. The two symbols 0 and 1 are the defining feature of this system, hence its name: binary.

The other terms aren’t numeral systems. Network topology describes how devices are physically or logically connected in a network. NIC teaming refers to combining multiple network interfaces for higher throughput or redundancy. Nonrepudiation is a security concept ensuring a sender cannot deny having sent a message.