At the heart of a computer is its central processing unit. The CPU's job is:
a. To fetch instructions
b. To carry out the operations commanded by the instructions
c. To produce some outcome or resultant information
d. All of these
e. None of these
d. All of these
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A(n) ________ is a piece of hardware that executes a set of machine-language instructions.
a) controller b) bus c) processor d) motherboard
?Identify a true statement ofarray.some(callback [, thisArg])method.
A. ?It tests whether the condition returned by thecallbackfunction holds for at least one item inarray. B. ?It returns the value of the first element in the array that passes a test in thecallbackfunction. C. ?It tests whether the condition returned by thecallbackfunction holds for all items inarray. D. ?It returns the index of the first element in the array that passes a test in thecallbackfunction.
In database software, fields have ____, which are characteristics that define the field.?
A. ?properties B. ?references C. ?ranges D. ?operators
Which of the following statements is false?
a) When the runtime or a method detects a problem, such as an invalid array index or an invalid method argument, it throws an exception—that is, an exception occurs. b) Exceptions are always thrown by the runtime. c) To handle an exception, place any code that might throw an exception in a try statement. d) The try block contains the code that might throw an exception, and the catch block contains the code that handles the exception if one occurs.