To Purchase an Item from an Internet Site,you Will Be

question 151

Multiple Choice

To purchase an item from an Internet site,you will be asked to provide a credit card number.Because of ________,a computer hacker who intercepts this number as it is being sent to the seller would likely see £D¥$&0PDJLJL,or something equally as meaningless.

• A)decoding
• B)back-translation
• C)encryption
• D)the firewall
• E)reverse encoding

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Definitions:

Perfect Substitutes

Goods that a consumer is completely indifferent between, meaning they will substitute one for another at a constant rate regardless of any change in price or utility.

Perfect Complements

Goods that are always used together in fixed proportions, where the utility or value of one item increases with use of the other.

Pareto Efficient

An allocation condition in resources where any attempt to favor one individual results in a disadvantage to another.

Pareto Optimal

A state of allocation of resources from which it is impossible to reallocate without making at least one individual or preference criterion worse off.