Intro To Java

42 Questions I By Briitanii

Java Script test

Reveal Answers: During the Quiz (Practice Mode) End of Quiz (Exam Mode) Number of questions:

Changes are done, please start the quiz.

Remove Excerpt

Questions and Answers

1.
Another term for program is:
- A.
  
  Peopleware
- B.
  
  Hardware
- C.
  
  Software
- D.
  
  Firmware

2.
The major components of a typical computer system consist of
- A.
  
  Input/output devices
- B.
  
  Main memory
- C.
  
  Secondary Storage
- D.
  
  The CPU
- E.
  
  All of the above

3.
A byte is a collection of
- A.
  
  Four bits
- B.
  
  A dollar
- C.
  
  Six bits
- D.
  
  Eight bits

4.
A(n)______________is a special programming language used to write computer programs.
- A.
  
  Programming language
- B.
  
  Application
- C.
  
  Operating system
- D.
  
  Application
- E.
  
  Pseudocode

5.
Syntax is
- A.
  
  Words that have a special meaning in the programming language
- B.
  
  Rules that must be followed when writing a program
- C.
  
  Symbols or words that perform operations
- D.
  
  Punctuation

6.
Variables are:
- A.
  
  Symbolic names made up by the programmer whose values cannot be changed
- B.
  
  Operators that perform operations on one or more operands
- C.
  
  Symbolic names made up by the programmer that represent locations in the computers RAM
- D.
  
  Reserved words

7.
A software entity that contains data and procedures is a(n)
- A.
  
  Object
- B.
  
  Method
- C.
  
  Class
- D.
  
  Program

8.
RAM is usually
- A.
  
  Secondary storage
- B.
  
  A volatile type of memory, used only for temporary storage
- C.
  
  A static type of memory, used only for temporary storage
- D.
  
  A static type of memory, used for permanent storage
- E.
  
  An input/output device

9.
A computer program is
- A.
  
  Pseudocode
- B.
  
  Main memory
- C.
  
  A set of instructions that enable the computer to solce a problem or perform a task
- D.
  
  A flow chart

10.
Key words are
- A.
  
  Words or names defined by a programmer
- B.
  
  Symbols or words that perform operations on one or more operands
- C.
  
  Words that have a special meaning in the programming language
- D.
  
  The data names in your program

11.
_________ are used to indicate the end of a Java statement
- A.
  
  Periods
- B.
  
  Semicolons
- C.
  
  Colons
- D.
  
  Asterisks

12.
If the following Java statements are executed, what will be displayedSystem.out.println("The top three winners are \n");System.out.println("Jody, the Giant \n");System.out.print("Buffy, the Dwarf");System.out.print("Adelle, the Albino");
- A.
  
  The top three winners are Jody, the Giant Buffy, the DwarfAdelle, the Albino
- B.
  
  The top three winners are Jody, the Giant\nBuffy, the DwarfAdelle, the Albino
- C.
  
  The top three winnders are Jody, the Giant\nBuffy, the DwarfAdelle, the Albino
- D.
  
  The top three winnders are Jody, the Giant Buffy, the Dwarf Adelle, the Albino

13.
A(n) _______ is a value that is written into the code of a program
- A.
  
  Assignment statement
- B.
  
  Variable
- C.
  
  Literal
- D.
  
  Operator

14.
Which of the following is not a primitive data type?
- A.
  
  Float
- B.
  
  Short
- C.
  
  String
- D.
  
  Long

15.
The boolean data type may contain values in the following range of values
- A.
  
  -128 to +127
- B.
  
  -32,768 to +32,767
- C.
  
  -2,198,284 to +2,198,283
- D.
  
  True/False

16.
Character literals are enclosed in _________; string literals are enclosed in_______.
- A.
  
  Double quotes; double quotes
- B.
  
  Single quotes; double quotes
- C.
  
  Single quotes; single quotes
- D.
  
  Double quotes; single quotes

17.
What is the result of the following statement?25/4+4*10%3
- A.
  
  19
- B.
  
  3
- C.
  
  7
- D.
  
  5.25

18.
Which of the following will correctly convert the data type, if x is an integer and y is a double?
- A.
  
  X = (int) y;
- B.
  
  X=y;
- C.
  
  X = int y;
- D.
  
  X = y;

19.
In the following Java statement what is the value of the variable, name?
- A.
  
  John Doe
- B.
  
  The memory address where "John Doe" is located
- C.
  
  The memory address where name is located
- D.
  
  Name

20.
To display the output on the next line, you can use the println method or use the escape sequence _________, in the print method.
- A.
  
  \b
- B.
  
  \n
- C.
  
  \t
- D.
  
  \r

21.
What would be displayed as a result of the follwing code, assuming x has been declared an integer?x=578;System.out.print("There are " + x + "5 \n" + "hens in the hen house.");
- A.
  
  There are 583 hens in the hen house.
- B.
  
  There are x5\nhens in the hen house.
- C.
  
  There are 5785 hens in the hen house
- D.
  
  There are 5785 hens in the hen house.

22.
If x has been declared an integer, int x;, which of the following is invalid?
- A.
  
  X=-58932
- B.
  
  X=1,000;
- C.
  
  X=592;
- D.
  
  X=0;

23.
Given double r;, which of the following is invalid
- A.
  
  R=-9.4632E15;
- B.
  
  R=2.9X106
- C.
  
  R=9.4632e15;
- D.
  
  R=326.75

24.
Variables of the boolean data type are useful for
- A.
  
  Working with small integers
- B.
  
  Evaluating scientific notation
- C.
  
  Evaluating true/false conditions
- D.
  
  Working with very large integers

25.
What is the result of the following statement?17%3*2-12+15
- A.
  
  8
- B.
  
  7
- C.
  
  105
- D.
  
  12

26.
What will be displayed after the following statements have been executed? int x = 15, y = 20, z = 32; x *= y; y –= z; z% = 16; System.out.println(“x = ” + x + “, y = ” + y, “ z = ” +z);
- A.
  
  X=300,y=-12,z=0
- B.
  
  X=35,y=52,z=48
- C.
  
  X=15,y=20,z=32
- D.
  
  X=300,y=-12,z=2

27.
A(n) ____ is a variable whose content is read only and cannot be changed during the program’s execution of the program.
- A.
  
  Named constant
- B.
  
  Literal
- C.
  
  Operator
- D.
  
  Reserved word

28.
Which of the following expressions will check to see if x is less than or equal to y?
- A.
  
  X=
- B.
  
  X>=y
- C.
  
  X<=y
- D.
  
  X>y

29.
What will be the value of x after the following code is executed? int x = 75; int y = 60; if (x > y) x = x – y;
- A.
  
  75
- B.
  
  15
- C.
  
  135
- D.
  
  60

30.
What will be the value of ans after the following code has been executed? int x = 65; int y = 55; if (x >= y) int ans = x + y;
- A.
  
  10
- B.
  
  120
- C.
  
  100
- D.
  
  No value, there is a syntax error

31.
What will be the value of ans after the following code has been executed? int x = 90, y = 55, ans = 10; if ( x == y); ans *= 2; a. 10 b. 145 c. 20 d. No value, there is a syntax error
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

32.
If chr is a character variable, which of the following if statements is correct? a. if (chr = “a”) b. if (chr == “a”) c. if (chr = ‘a’) d. if (chr == ‘a’)
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

33.
What will be the value of bonus after the following code is executed? int bonus, sales = 10000; if (sales < 5000) bonus = 200; else if (sales < 7500) bonus = 500; else if (sales < 10000) bonus = 750; else if (sales < 20000) bonus = 1000; else bonus = 1250; a. 200 b. 500 c. 750 d. 1000 e. 1250
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
- E.
  
  E

34.
What would be the value of bonus after the following statements are executed? int bonus, sales = 85000; char dept = ‘S’; if (sales > 100000) if (dept == ‘R’) bonus = 2000; else bonus = 1500; else if (sales > 75000) if (dept == ‘R’) bonus = 1250; else bonus = 1000; else bonus = 0; a. 2000 b. 1500 c. 1250 d. 1000
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

35.
Which of the following is the correct boolean expression to test for: int x being a value between, but not including, 500 and 650, or int y not equal to 1000? a. ((x >= 500 && x <= 650) && (y != 1000)) b. ((x > 500 AND x < 650) OR !(y.equal(1000))) c. ((x > 500 && x < 650) || (y != 1000)) d. ((x < 500 && x > 650) || !(y == 1000))
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

36.
The expression in an if statement must evaluate to a. 0 or 1 b. +1 or –1 c. true or false d. T or F
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

37.
27. _____ operators are used to determine whether a specific relationship exists between two values. a. Arithmetic b. Relational c. Syntactical d. Assignment
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

38.
28. What is the value of x after the following code has been executed? int x = 75; int y = 90; if ( x != y) x += y; a. 75 b. 90 c. 15 d. 165
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D

39.
Each byte is assigned to a unique number known as an address.
- A.
  
  True
- B.
  
  False

40.
The following truth table shows various combinations of the values true and false connected by a logical operator. Complete the table by answering T or F to indicate if the result of such a combination is true or false________ true && false________ true && true________ true || false________ false || !false________ !(true && false)________ !(!false)________ !(!true || false)

41.
A Java program must have at least one a. Class definition b. Variable c. Comment d. System.out.println(); statement
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D