Encryption Has a Remarkably Long and Varied History

question 7

Multiple Choice

Encryption has a remarkably long and varied history.The invention of writing was apparently soon followed by a desire to conceal messages.One of the methods,was the simple substitution of numbers for letters,for example A = 1,B = 2,etc.This is an example of

• A)a hashing algorithm.
• B)symmetric key encryption.
• C)asymmetric key encryption.
• D)a public key.

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Definitions:

Enlargement Of The Heart

A condition where the heart becomes larger than normal due to various reasons, including hypertension or heart disease.

Mitral Valve Prolapse

A condition where the mitral valve of the heart does not close properly, allowing blood to flow backward into the left atrium.

Left Atrium

One of the four chambers of the heart, located on the left side, which receives oxygenated blood from the lungs and pumps it into the left ventricle.

Four-Chambered Pump

An analogy often used to describe the human heart, highlighting its four compartments and function in circulating blood.