Which term describes the range of authentication factors including single, two, or multi-factor approaches?

Which term describes the range of authentication factors including single, two, or multi-factor approaches?

• A. Single- and Multi-factor
• B. Two-Factor
• C. Single-, Two-, and Multi-factor
• D. Multi-factor Only

Answer: (C)

Authentication factors can be used in varying numbers—from a single credential to multiple credentials combined. A single factor means you’re using one type of credential, two factors means two distinct types, and multi-factor means more than two. The phrase that covers this whole spectrum—single, two, and multi-factor approaches—is “Single-, Two-, and Multi-factor.” It aptly includes every level from only one factor up to using multiple factors in combination. Why the other descriptions aren’t as complete: naming just one type like Two-Factor covers only the two-factor case; calling it Single- and Multi-factor misses the explicit two-factor scenario; calling it Multi-factor Only excludes single-factor and two-factor situations. The chosen term embraces all three possibilities, reflecting the full range of authentication factor usage.

Authentication factors can be used in varying numbers—from a single credential to multiple credentials combined. A single factor means you’re using one type of credential, two factors means two distinct types, and multi-factor means more than two. The phrase that covers this whole spectrum—single, two, and multi-factor approaches—is “Single-, Two-, and Multi-factor.” It aptly includes every level from only one factor up to using multiple factors in combination.

Why the other descriptions aren’t as complete: naming just one type like Two-Factor covers only the two-factor case; calling it Single- and Multi-factor misses the explicit two-factor scenario; calling it Multi-factor Only excludes single-factor and two-factor situations. The chosen term embraces all three possibilities, reflecting the full range of authentication factor usage.