Which of the following statements should be used to validate that a number input by the user into a variable namedWidgetsis an integer value?
a. ```While Widgets != Widgets
Write “Please enter an integer value:”
Input Widgets
End While```
b. ```While Int(Widgets) != Widgets
Write “Please enter an integer value:”
Input Widgets
End While```
c. ```Repeat
Write “Please enter an integer value:”
Input Widgets
End Repeat```
d. ```While Widgets > 0
Write “Please enter an integer value:”
Input Widgets
End While```
B
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Answer the following statements true (T) or false (F)
1) If a class leaves one method in an interface undeclared, the class is implicitly declared by C# as an abstract class. 2) An interface is typically used in place of an abstract class when there is no default implementation to inherit. 3) Abstract classes can provide data and services for objects. 4) Declaring an interface protected allows for extra security precautions.
The program that tests a method is called a ____ program.
A. tester B. driver C. stub D. debugging
A serial device transmission speed is measured in bits per second
Indicate whether the statement is true or false
__________ is an extra layer of programming to manage interaction between multiple OS's and hardware without the need for a host OS.
a. supervisor b. virtual machine manager c. hypervisor d. emulator