A New IO Card Has Been Added to the Security

question 92

Multiple Choice

A new IO card has been added to the security server to log the opening and closing of the main entrance. A switch is attached, so the interface card returns a 1 when the door is opened and a 0 when the door is closed. Which of the following describes the Linux device to which this switch is attached?

• A) /dev/tty0
• B) /dev/port
• C) /dev/gpio
• D) /dev/sg0

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Definitions:

Deadweight Loss

A loss of economic efficiency that can occur when the free market equilibrium is not achieved due to market failures or interventions.

Marginal Cost Curve

A graphical representation showing how the cost to produce one additional unit of output varies with the level of production.

Marginal Revenue Curve

A visual representation that shows the additional revenue generated by selling one more unit of a good or service.

Collude

To engage in a secret or illegal cooperation or conspiracy, especially in order to cheat or deceive others.