Explain the term Null. What would be the result of the IsNull function?
What will be an ideal response?
Null is not zero. Null is used to indicate that a value is unknown, and it is treated differently than other values because it has no value. Instances exist when querying records that contain fields with null values are necessary. The result of the IsNull function returns a Boolean value—True or False—that indicates whether or not an expression contains valid data.
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When H.323 is used to send data along with audio or video, which transport protocol is used?
What will be an ideal response?
To identify a document as a draft (not in final form), you can insert a ________
Fill in the blank(s) with correct word
FIGURE WIN 1-1
In Figure WIN 1-1 above, #2 is pointing to the ____.
A. work area B. desktop C. status bar D. notification area
Linux is a kind of software whose code is provided for use, modification, and redistribution. What kind of software is this?
A. open source B. client/server C. upgradable D. multitasking