You can cause a variable to have no value by assigning it the value ____.
A. 0
B. null
C. empty
D. " "
Answer: B
Computer Science & Information Technology
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Widgets are server-side programs
Indicate whether the statement is true or false
Computer Science & Information Technology
When using Skype, a(n) ________ indicator next to your name shows that you are online.
a. blue b. red c. green d. yellow
Computer Science & Information Technology
Alice sends a message to Bob. She uses cryptography to ensure that Bob will be able to prove to another person that the message in his possession actually came from Alice. What goal of cryptography is Alice attempting to achieve?
What will be an ideal response?
Computer Science & Information Technology
The ____key allows the Excel user to cycle through all possible combinations of relative, mixed, and absolute cell references for a formula.
A. [F1] B. [F4] C. [F10] D. [F12]
Computer Science & Information Technology