Firewalls Are

question 86

Multiple Choice

Firewalls are

• A)special materials used to insulate computer facilities
• B)a system that enforces access control between two networks
• C)special software used to screen Internet access
• D)none of the above

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Definitions:

Auto-ignition Temperature

The lowest temperature at which a substance spontaneously ignites in a normal atmosphere without an external source of ignition.

Melting Point

The melting point is the temperature at which a solid substance transitions to its liquid phase under atmospheric pressure.

Physical Change

A physical change is a change in a substance that does not involve a change in its chemical composition, such as melting, freezing, or cutting.

Specific Heat

The amount of heat per unit mass required to raise the temperature of a substance by one degree Celsius.