Question 1 (5 points)

In the representation of floating point data types, which part of the representation controls the precision?

Question 1 options:

	The exponent
	Both the mantissa and exponent
	The sign bit
	The mantissa X

Question 2 (5 points)

Which of the following is not a scalar data type?

Question 2 options:

	Boolean types
	Record types X
	Integer types
	Enumerated types

Question 3 (5 points)

In which of the following languages, can subscripting not be used to select a single character with in a string?

Question 3 options:

	C
	Ada
	Java X
	C++

Question 4 (5 points)

Which of the following types is intended to be used for nonnumeric data?

Question 4 options:

	Decimal types
	Floating point types
	Integer types
	Enumerated types X

Question 5 (5 points)

When a two-dimensional array is stored in row major order, which of the following values is needed to compute the location of an array element?

Question 5 options:

	Half the total number of elements in the array
	The total number of elements in the array
	The number of rows
	The number of columns X

Question 6 (5 points)

What is the difference between a discriminated and free union?

Question 6 options:

	A discriminated union has a tag or discriminant field X
	Free unions require greater run time error checking
	The size of free unions cannot be computed at compile time
	There is no difference

Question 7 (5 points)

Which of the following languages has both pointers and references?

Question 7 options:

	C++ X
	C
	Ada
	Java

Question 8 (5 points)

Consider the following code fragment in C++: int *p = new int; p = new int; What happens as a result of the above code?

Question 8 options:

	A dangling reference is created
	A dangling pointer is created
	The above code will not compile
	Garbage is created X

Question 9 (5 points)

When the reserved word static modifies a C++ local variable, what effect does it have?

Question 9 options:

	It changes the variable's scope
	It changes the variable's lifetime X
	It changes both the scope and lifetime
	static cannot modify local variables in C++

Question 10 (5 points)

Variables that are bound to a memory location throughout the life of a program are which of the following kind of variables?

Question 10 options:

	Static global variables
	Variables allocated on the heap pointed to by explicit pointer
	When any data member is a variable allocated on the heap pointed to by an explicit pointer
	Local variables allocated on the stack

Question 11 (5 points)

For a language to be able to allow recursion, what type of memory allocation must the language support?

Question 11 options:

	Static allocation
	Stack allocation
	Heap allocation
	Free store allocation

Question 12 (5 points)

In Java, under what conditions can two local variables in the same method have the same name?

Question 12 options:

	Provided their scopes are disjoint X
	There are no restrictions
	Two different local variables can never have the same name
	Provided they have different scopes

Question 13 (5 points)

Which of the following languages is the most strongly typed?

Question 13 options:

	C++
	Ada X
	C
	Java X

Question 14 (5 points)

The struct data type of C can best be described as which of the following kinds of types?

Question 14 options:

	A pointer type
	A reference type
	An array type
	A record type X

Question 15 (5 points)

When does static binding of a variable name to a memory location occur?

Question 15 options:

	At compile time X
	Not until run time
	It depends on the program
	Not until link time

Question 16 (5 points)

When a language provides automatic garbage collected, which of the following tasks is the programmer freed from having to do explicitly?

Question 16 options:

	Allocate heap-dynamic variables
	Deallocate stack-dynamic variables
	Deallocate heap-dynamic variables X
	Allocate stack-dynamic variables

Question 17 (5 points)

In Java, which of the following produces a compilation error?

Question 17 options:

	Assigning a short to a int
	Assigning an int to a double
	Assigning an int to a long
	Assigning a double to a float X

Question 18 (5 points)

Consider the following code fragment in C++: int *p; *p = 5; What happens as a result of the above code?

Question 18 options:

	The above code will not compile
	Automatic garbage collection occurs
	Garbage is created that can never be deallocated
	A dangling pointer is being deferenced, which could cause the program to crash X

Question 19 (5 points)

What term is used to describe the language feature in which the type of a variable is determined by a default convention, such as a naming convention?

Question 19 options:

	Default binding
	Explicit declaration
	Name binding
	Implicit declaration X

Which of the following best describes the difference between a pointer and a reference?

Question 20 options:

	Pointers can point to memory on the heap, references cannot
	Pointers are implicitly dereferenced
	References can point to memory on the heap, pointers cannot
	References are implicitly dereferenced X