Which one of the following best describes a polymorphic virus?
a. A virus that changes its form each time it is executed
b. A virus inserted into a Microsoft Office document such as Word or Excel
c. A virus that infects EXE files
d. A virus that attacks the boot sector and then attacks the system files
Answer: a. A virus that changes its form each time it is executed
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Function key ________ accesses the Go To command in Excel
Fill in the blank(s) with correct word
A menu ________ is a group of menus at the top of a program window
A) ribbon B) bar C) group D) pane
Match each item with a statement below.
A. A statement in which one decision structure is contained within another. B. An unintended consequence. C. A test expression in a switch structure. D. Identifies a course of action in a switch structure. E. Allows you to assign values to a list of constants. F. Negates the result of any Boolean expression. G. A series of if statements that determine whether a value falls within a specified range. H. The only ternary operator in C#. I. A diagram used to describe the Boolean value of an entire compound expression. J. A collection of one or more statements contained within a pair of curly braces.
There exists a data type Date with member function Increment that increments the current Date object by one. The ++ operator is being overloaded to postincrement an object of type Date. Select the correct implementation:
a. Date Date::operator++(int) { Date temp{*this}; Increment(); return *temp; } b. Date Date::operator++(int) { Increment(); Date temp{*this}; return temp; } c. Date Date::operator++(int) { Date temp{*this}; return this; temp.Increment(); } d. Date Date::operator++(int) { Date temp{*this}; Increment(); return temp;