What do Global Positioning System (GPS) satellites use to provide very precise time to GPS receivers?

a. Crystal oscillator
b. Internal timing.
c. Atomic clock.
d. Station clock.

Ans: c. Atomic clock.

Computer Science & Information Technology

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Which of the following is the correct way to determine if a file stream named inFile opened correctly?

a. if( inFile.open() ) b. if( inFile.fail() ) c. if( inFile.opened() ) d. if( inFile.failed() )

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When you insert a picture into a page, Expression Web inserts a(n) ____ tag in the Web page code.

A. B. C. D.

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A(n) ____ variable is any group of characters, such as "Hello" or "Happy Holidays!".

A. Boolean B. data C. text string D. null

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What does the extension part of a filename indicate?

Fill in the blank(s) with the appropriate word(s).

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