Question 1

The ____ method, of the ArrayList<E> class, creates a new array that is twice the size of the current array and then copies the contents of the current array into the new one.
A) remove
B) add
C) reallocate
D) vector

Accepted Answer

The reallocate method of the ArrayList<E> class creates a new array that is twice the size of the current array and then copies the contents of the current array into the new one.

Question 2

In the java.util.ArrayList<E> class, which of the following returns a reference to the element at position index?
A) add(E anEntry)
B) indexOf(E target)
C) E remove(int index)
D) E get(int index)

Accepted Answer

The method `E get(int index)` is used to return the element at the specified position in the list.

Question 3

Which of the following is a subclass of Vector?
A) Stack
B) LinkedList
C) Iterator
D) Collection

Accepted Answer

Stack is a subclass of Vector in Java, which extends Vector to implement a last-in-first-out (LIFO) stack.

Question 4

A(n) ____ is a data structure that contains a data item and one or more links.
A) collection
B) node
C) iterator
D) interface

Accepted Answer

A node is a fundamental part of many data structures, such as linked lists and trees, and it typically contains a data item and one or more links (or pointers) to other nodes.

Question 5

You could create a circular list from a single-linked list by executing the statement ____.
A) tail.next = head;
B) head.prev = tail;
C) tail.head = next;
D) head.tail = prev;

Accepted Answer

A circular list can be created from a singly linked list by making the last node (tail) point to the first node (head), which is achieved with the statement `tail.next = head;`. This creates a loop where traversing the list from head will eventually lead back to the head, hence forming a circle. Options B, C, and D involve syntax or properties not applicable to a singly linked list structure.

Question 6

In the Java API documentation, inner classes are called ____ classes.
A) collection
B) interface
C) nested
D) iterator

Accepted Answer

In the Java API documentation, inner classes are referred to as nested classes. This terminology is used because an inner class is technically a class that is nested within another class.

Question 7

The LinkedList class implements the List interface using a(n) ____. A) iterator B) interface C) collection D) double-linked list

Accepted Answer

The LinkedList class in Java implements the List interface using a double-linked list, which allows for efficient insertion and removal of elements.

Question 8

A(n) ____________________ is a statement of any assumptions or constraints on the method data before the method begins execution.

Accepted Answer

The answer of A(n) ____________________ is a statement of any...

Question 9

____________________ testing tests the software element (method, class, or program) with the knowledge of its internal structure.

Accepted Answer

The answer of ____________________ testing tests the software element (method,...

Question 10

The replacement for a method that has not yet been implemented or tested is called a(n) ____________________.

Accepted Answer

The answer of The replacement for a method that has...

Question 11

A(n) ____________________ declares any necessary object instances and variables, assigns values to any of the method's inputs, calls the method, and displays the values of any outputs returned by the method.

Accepted Answer

The answer of A(n) ____________________ declares any necessary object instances...

Question 12

____ testing refers to testing the smallest testable piece of software.
A) Integration
B) System
C) Unit
D) Acceptance

Accepted Answer

Unit testing focuses on testing the smallest testable parts of the software, typically individual functions or methods, to ensure they work correctly in isolation.

Question 13

____ testing involves testing the interactions among units.
A) Unit
B) System
C) Integration
D) Acceptance

Accepted Answer

Integration testing focuses on testing the interactions among units to identify interface defects between the modules.

Question 14

____ testing is the testing of the whole program in the context in which it will be used.
A) Acceptance
B) Integration
C) Unit
D) System

Accepted Answer

System testing involves testing the entire program as a whole in the environment where it will be used, ensuring it meets the specified requirements.

Question 15

____ testing is system testing designed to show that the program meets its functional requirements.
A) Unit
B) Acceptance
C) System
D) Integration

Accepted Answer

Acceptance testing is specifically designed to determine if the requirements of a specification or contract are met, hence showing that the program meets its functional requirements.

Quiz 2: Lists and the Collections Framework

The ____ method, of the ArrayList<E> class, creates a new array that is twice the size of the current array and then copies the contents of the current array into the new one.

In the java.util.ArrayList<E> class, which of the following returns a reference to the element at position index?

Which of the following is a subclass of Vector?

A(n) ____ is a data structure that contains a data item and one or more links.

You could create a circular list from a single-linked list by executing the statement ____.

In the Java API documentation, inner classes are called ____ classes.

The LinkedList<E> class implements the List<E> interface using a(n) ____.

A(n) ____________________ is a statement of any assumptions or constraints on the method data before the method begins execution.

____________________ testing tests the software element (method, class, or program) with the knowledge of its internal structure.

The replacement for a method that has not yet been implemented or tested is called a(n) ____________________.

A(n) ____________________ declares any necessary object instances and variables, assigns values to any of the method's inputs, calls the method, and displays the values of any outputs returned by the method.

____ testing refers to testing the smallest testable piece of software.

____ testing involves testing the interactions among units.

____ testing is the testing of the whole program in the context in which it will be used.

____ testing is system testing designed to show that the program meets its functional requirements.