Which of the following operators takes a Boolean expression and reverses its logical value?
a. Xor
b. And
c. <>
d. Not
d. Not
Computer Science & Information Technology
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In a database that contains tables with information about students in a university, which of the following should be the primary key?
a. the students' last names b. the students' full names c. the students' college identification numbers d. any of the above would be good primary keys
Computer Science & Information Technology
Layout options are used to control the way that text wraps around a picture or object
Indicate whether the statement is true or false
Computer Science & Information Technology
____ is the difference between the darkest and lightest areas of an image.
A. Contrast B. Color C. Style D. Brightness
Computer Science & Information Technology
The plain old telephone service is a good example of what kind of WAN technology?
A. packet switched B. leased line C. VPN over Internet D. circuit switched
Computer Science & Information Technology