Kwan Checks His Email for New Messages Several Times During

question 142

Multiple Choice

Kwan checks his email for new messages several times during the day. He realizes that because emails are sent on a ________________ schedule, checking his email more frequently will not increase the number of new emails he receives in a day. Furthermore, he knows that he cannot predict when people will email him, but if an email has been sent to him, he will receive it the next time he checks.

• A) fixed-ratio
• B) fixed-interval
• C) variable-ratio
• D) variable-interval

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Definitions:

4G

Stands for fourth generation. The current mobile communication standard with faster data transfer rates than 3G.

Traffic Signal

A device that controls the flow of vehicles and pedestrians through intersections or roadways by using lights of standard colors (red, yellow, green).

Network

A group of interconnected computers, servers, mainframes, network devices, peripherals, or other devices to share data and resources.