________ is a popular service that allows free phone calls over the Internet
Fill in the blank(s) with correct word
Skype; Voice over Internet Protocol; VOIP; Google Hangouts; FaceTime; ooVoo
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Windows uses a file's ____ to determine the application that opens it.
A. name B. extension C. type D. size
Show the printout of the following code:
```
#include
Charts help reveal ________, patterns, and other tendencies that are difficult to identify by just looking at values in a worksheet
Fill in the blank(s) with correct word
Processors today have clock rates of about ____.
a. 100-500 MHz b. 1-2 GHz c. 3-5 GHz d. 250-750 MHz