Which of these is NOT one of the two basic types of cryptography?
a. Asymmetric
b. Symmetric
c. Forward
d. None of the above
Answer C.
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Given the following function definition, what happens if the function throws the exception?
void f1( ) throw (double) { if( //some code here) throw 12; } a. the 12 will be converted to 12.0 b. the function will throw an integer exception which is passed to the calling code. c. the function will cause the program to exit d. this code has a syntax error
Procedures state the desired behavior, or specific outcome, that the control must ensure.
Answer the following statement true (T) or false (F)
Which of the following statements is false?
a) A gradient’s colors are defined by GradientStops—each specifies a single color along the gradient. b) A GradientStop’s Location property defines where along the linear transition you want the color to appear. c) You can change the GradientStops’ positions by dragging the thumbs that represent them on the sample gradient in the Properties window. d) If GradientStops have x:Name properties in the XAML, we can interact with them programmatically to change their colors.
Construct a relational algebra query that produces the same result as the outer join r outer cond s using only these operators: union, di?erence, Cartesian product, projection, general join (not outer join). You can also use constant relations, that is, relations with ?xed content (e.g., one that has tuples ?lled with nulls or other prede?ned constants).
Let nullR be the relation over R that contains only one tuple, which entirely consists of NULLs. Similarly, let nulls be a relation over S that has a single NULL-tuple. Then r outer conds is: