Section 1 Quiz

   1.   When an object is able to pass on its state and behaviors to its children, this is called:  Mark for Review
(1) Points
 
 
Inheritance (*)

 
Encapsulation

 
Isolation

 
Polymorphism

 
  Correct

 
  2.   Which of the following are important to your survival as a programmer?  Mark for Review
(1) Points
 
 
Being good at reading code.

 
Looking for opportunities to read code.

 
Being good at testing.

 
All of the above. (*)

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  3.   Which of the following statements about inheritance is false?  Mark for Review
(1) Points
 
 
A subclass inherits all the members (fields, methods, and nested classes) from its superclass.

 
Inheritance allows you to reuse the fields and methods of the super class without having to write them yourself.

 
Inheritance allows you to minimize the amount of duplicate code in an application by sharing common code among several subclasses.

 
Through inheritance, a parent class is a more specialized form of the child class. (*)

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  4.   Which of the following is not a good technique to follow when reading code written by others?  Mark for Review
(1) Points
 
 
Perform testing.

 
Find the author of the code and ask him how it works. (*)

 
Understand the constructs.

 
Learn the high level structure and starting point, and then figure out how it branches.

 
Build and run the code.

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  5.   Reading great code is just as important for a programmer as reading great books is for a writer. True or false?  Mark for Review
(1) Points
 
 
True (*)

 
False

 
  Correct

6.   Which of the following statements about arrays and ArrayLists in Java are true?
I. An Array has a fixed length.
II. An Array can grow and shrink dynamically as required.
III. An ArrayList can store multiple object types.
IV. In an ArrayList you need to know the length and the current number of elements stored.  Mark for Review
(1) Points
 
 
I and III only (*)

 
II and IV only

 
I, II, and III only

 
I, II, III and IV

 
None of the above

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  7.   Unit testing is the phase in software testing in which individual software modules are combined and tested as a whole. True or false?  Mark for Review
(1) Points
 
 
True

 
False (*)

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  8.   Which of the following statements is false?  Mark for Review
(1) Points
 
 
In an Array you need to know the length and the current number of elements stored.

 
An ArrayList has a fixed length. (*)

 
An ArrayList can store multiple object types.

 
An ArrayList can grow and shrink dynamically as required.

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  9.   When all unit tests succeed, you can have high confidence your code is solid. True or false?  Mark for Review
(1) Points
 
 
True (*)

 
False

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  10.   Arrays have built-in operations including add, clear, contains, get and remove. True or false?  Mark for Review
(1) Points
 
 
True

 
False (*)

 
  Incorrect. Refer to Section 1 Lesson 2.

  The main purpose of unit testing is to verify that an individual unit (a class, in Java) is working correctly before it is combined with other components in the system. True or false?  Mark for Review
(1) Points
 
 
True (*)

 
False

 
  Correct

 
  12.   In the relationship between two objects, the class that is being inherited from is called the maxi-class. True or false?  Mark for Review
(1) Points
 
 
True

 
False (*)

 
  Correct

 
  13.   Where are the quizzes for this course located?  Mark for Review
(1) Points
 
 
academy.oracle.com

 
iacademy.oracle.com

 
ilearning.oracle.com (*)

 
  Correct

 
  14.   What courses are part of the Oracle Academy?  Mark for Review
(1) Points
 
  (Choose all correct answers)
 
 
Database Programming with PL/SQL

 
Big Data

 
Database Design and Programming with SQL (*)

 
Java Fundamentals


 
  Incorrect. Refer to Section 1 Lesson 1.

 
  15.   Oracle Academy is awesome.  Mark for Review
(1) Points
 
 
True (*)

 
False

 


  Correct


 
  1.   Which of the following statements about inheritance is false?  Mark for Review
(1) Points
 
 
A subclass inherits all the members (fields, methods, and nested classes) from its superclass.

 
Inheritance allows you to reuse the fields and methods of the super class without having to write them yourself.

 
Inheritance allows you to minimize the amount of duplicate code in an application by sharing common code among several subclasses.

 
Through inheritance, a parent class is a more specialized form of the child class. (*)

 
  Correct

 
  2.   Examine the following code snippet. What is this an example of?

public class Car extends Vehicle {
public Car() {

}
}  Mark for Review
(1) Points
 
 
Encapsulation

 
Inheritance (*)

 
Polymorphism

 
Comments

 
  Correct

 
  3.   When all unit tests succeed, you can have high confidence your code is solid. True or false?  Mark for Review
(1) Points
 
 
True (*)

 
False

 
  Correct

 
  4.   Why is it helpful for new programmers to read pre-written code?  Mark for Review
(1) Points
 
  (Choose all correct answers)
 
 
It is not helpful to read code written by other programmers.

 
Meet new programmers.

 
Learn new programming techniques. (*)

 
Understand code written by other programmers.

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  5.   Unit testing is the phase in software testing in which individual software modules are combined and tested as a whole. True or false?  Mark for Review
(1) Points
 
 
True

 
False (*)

 
  Correct

6.   In the relationship between two objects, the class that is being inherited from is called the maxi-class. True or false?  Mark for Review
(1) Points
 
 
True

 
False (*)

 
  Correct

 
  7.   Which of the following statements about unit testing is/are true
I. When all unit tests succeed, you can have high confidence your code is solid.
II. If a unit test fails, you donﾒt proceed until the code is fixed and the test succeeds.
III. If all unit tests succeed, you should continue writing new tests until you break the code.  Mark for Review
(1) Points
 
 
I only

 
I and II only

 
II and III only (*)

 
I, II, and III

 
None of the above

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  8.   Which of the following is not a good technique to follow when reading code written by others?  Mark for Review
(1) Points
 
 
Understand the constructs.

 
Find the author of the code and ask him how it works. (*)

 
Build and run the code.

 
Learn the high level structure and starting point, and then figure out how it branches.

 
Perform testing.

 
  Correct

 
  9.   When an object is able to pass on its state and behaviors to its children, this is called:  Mark for Review
(1) Points
 
 
Encapsulation

 
Polymorphism

 
Inheritance (*)

 
Isolation

 
  Correct

 
  10.   Reading great code is just as important for a programmer as reading great books is for a writer. True or false?  Mark for Review
(1) Points
 
 
True (*)

 
False

 
  Correct

11.   Which of the following statements about arrays and ArrayLists in Java are true?
I. An Array has a fixed length.
II. An Array can grow and shrink dynamically as required.
III. An ArrayList can store multiple object types.
IV. In an ArrayList you need to know the length and the current number of elements stored.  Mark for Review
(1) Points
 
 
I and III only (*)

 
II and IV only

 
I, II, and III only

 
I, II, III and IV

 
None of the above

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  12.   What do Arrays and ArrayLists have in common?
I. They both store data.
II. They can both be traversed in loops.
III. They both can be dynamically re-sized during execution of a program.  Mark for Review
(1) Points
 
 
I only

 
II only

 
I and II only (*)

 
I, II and III only

 
None of the above

 
  Incorrect. Refer to Section 1 Lesson 2.

 
  13.   Oracle Academy is awesome.  Mark for Review
(1) Points
 
 
True (*)

 
False

 
  Correct

 
  14.   Where are the quizzes for this course located?  Mark for Review
(1) Points
 
 
ilearning.oracle.com (*)

 
academy.oracle.com

 
iacademy.oracle.com

 
  Correct

 
  15.   What courses are part of the Oracle Academy?  Mark for Review
(1) Points
 
  (Choose all correct answers)
 
 
Database Design and Programming with SQL (*)

 
Database Programming with PL/SQL

 
Big Data

 
Java Fundamentals

 
  Incorrect. Refer to Section 1 Lesson 1.