Question 1

The number 11111111 in binary is equivalent to the number 255 in decimal.

Accepted Answer

A) True 
 B)False  True

Question 2

The value 3.42e-4 is equivalent to _____.

Accepted Answer

A)   3420000
B)   .000342
C)   -3.420000
D)   -.000342 B

Question 3

What is stored in ans as a result of the arithmetic expression, given the following declarations?

Accepted Answer

A)   27
B)   12
C)   29
D)   none of the above C

Question 4

Both static and constant are keywords in C#.

Accepted Answer

A) True 
 B)False

Question 5

When you add the keyword ____________ to a declaration, it becomes a constant.

Accepted Answer

The answer of When you add the keyword ____________ to...

Question 6

The decimal value type is appropriate for storing monetary data items because it provides for greater precision.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is a valid identifier?

Accepted Answer

A)   score#1
B)   amount owed by student
C)   finalGrade
D)   4thExam

Question 8

Classes, methods, namespaces, and properties follow the Pascal case naming convention, which indicates that the first letter in the identifier is in lowercase and the first letter of each subsequent concatenated word is capitalized.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is a valid compile-time initialization for amountDue, a floating point variable of the double type, that will initially be set to zero?

Accepted Answer

A)   amountDue = 0;
B)   amountDue = '0';
C)   amountDue = 0m;
D)   amountDue = 0f;

Question 10

A valid string literal representing the last month of the year is ____.

Accepted Answer

A)   12
B)   "December"
C)   lastMonthOfTheYear
D)   December

Question 11

Placing the two plus symbols (++) before an identifier causes one to be added to the memory location referenced by the variable prior to any other statement's execution.

Accepted Answer

A) True 
 B)False

Question 12

In order to place a value in memory that cannot be changed, you add the keyword ____________ to the declaration.

Accepted Answer

The answer of In order to place a value in...

Question 13

The ____________ data type is a whole number, between a certain range of values, and contains no decimal point.

Accepted Answer

The answer of The ____________ data type is a whole...

Question 14

____________ makes a variable temporarily behave as if it is a different type.

Accepted Answer

The answer of ____________ makes a variable temporarily behave as...

Question 15

Base 16, also called the octal numbering system, uses powers of sixteen.

Accepted Answer

A) True 
 B)False

Question 16

C# allows you to mix numeric integral types and floating-point types in an expression.

Accepted Answer

A) True 
 B)False

Question 17

Unicode includes representation of 28 or 256 unique characters.

Accepted Answer

A) True 
 B)False

Question 18

The ____________ data type was added to the language to eliminate the problems of loss of precision in mathematical operations that occurred in previous languages.

Accepted Answer

The answer of The ____________ data type was added to...

Question 19

The @ symbol in the following string, @ "C:\MyProjects", is called a(n) ____________ character.

Accepted Answer

The answer of The @ symbol in the following string,...

Question 20

If you expect to receive an "A" in this course, which of the following declarations would be most appropriate for storing the grade?

Accepted Answer

A)   char letterGrade;
B)   string grade;
C)   int letterGrade;
D)   double letterGrade;

Exam 2: Data Types and Expressions

The number 11111111 in binary is equivalent to the number 255 in decimal.

The value 3.42e-4 is equivalent to _____.

What is stored in ans as a result of the arithmetic expression, given the following declarations?

Both static and constant are keywords in C#.

When you add the keyword ____________ to a declaration, it becomes a constant.

The decimal value type is appropriate for storing monetary data items because it provides for greater precision.

Which of the following is a valid identifier?

Classes, methods, namespaces, and properties follow the Pascal case naming convention, which indicates that the first letter in the identifier is in lowercase and the first letter of each subsequent concatenated word is capitalized.

Which of the following is a valid compile-time initialization for amountDue, a floating point variable of the double type, that will initially be set to zero?

A valid string literal representing the last month of the year is ____.

Placing the two plus symbols (++) before an identifier causes one to be added to the memory location referenced by the variable prior to any other statement's execution.

In order to place a value in memory that cannot be changed, you add the keyword ____________ to the declaration.

The ____________ data type is a whole number, between a certain range of values, and contains no decimal point.

____________ makes a variable temporarily behave as if it is a different type.

Base 16, also called the octal numbering system, uses powers of sixteen.

C# allows you to mix numeric integral types and floating-point types in an expression.

Unicode includes representation of 2⁸ or 256 unique characters.

The ____________ data type was added to the language to eliminate the problems of loss of precision in mathematical operations that occurred in previous languages.

The @ symbol in the following string, @ "C:\MyProjects", is called a(n) ____________ character.

If you expect to receive an "A" in this course, which of the following declarations would be most appropriate for storing the grade?