What Is the Most Costly and Intrusive Form of Authentication

question 1

Multiple Choice

What is the most costly and intrusive form of authentication?

• A) Something the user knows such as a user ID and password
• B) Something the user has such as a smart card or token
• C) Something that is part of the user such as a fingerprint or voice signature
• D) None of these

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Definitions:

Market Failure

A situation in which the allocation of goods and services by a market is not efficient, often leading to a net social welfare loss.

Marginal Benefit

The increased happiness or advantage derived from the consumption of one more unit of a good or service.

Marginal Cost

The cost of producing one more unit of a good or service, often key to determining the optimal level of production.

Competitive Market

A market structure characterized by a large number of buyers and sellers, free entry and exit, and products that are similar enough to be considered substitutes.