Explain the difference between RGB and CMYK color. What does it mean that one of them is additive and one is subtractive?
What will be an ideal response?
RGB (red, green, blue) are the additive primaries, used to generate color from projected light. When all the primaries are added together the resulting color is white. CMY are the subtractive primaries, with black (K) added to compensate for impure pigments. Subtractive color reflects light—when the subtractive primaries are added together, no light waves are reflected, creating the perception of black.
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Answer the following statements true (T) or false (F)
1. Once a field has been specified as a primary key, Visual Basic will not allow that field to contain an empty entry for any record. 2. LINQ can be used in Visual Basic to sort records. 3. A LINQ clause beginning with Join and ending with a phrase of the form On foreign key of tblA Equals primary key of tblB causes two tables to be joined. 4. The Move next button of a navigator toolbar is never disabled. 5. When a navigation toolbar is used with a table from a database, the value of BindingSource1.Position is the index of the current record.
__________ key encryption schemes are secure if the public key is authenticated.
A. Message B. Management C. Public D. Private
A ____ begins with two slashes (//) and continues to the end of the line.
a. program comment b. function comment c. block comment d. line comment
A(n) ____________________ is an object that produces each element of a container, such as a linked list, one element at a time.
Fill in the blank(s) with the appropriate word(s).