WGU C949 Data Structures and Algorithms
(New 2026/ 2027 Update) Questions &
Answers {Grade A} 100% Correct (Verified
Solutions)
RemoveAfter - correct answer An operation for a singly-linked list that removes the
node after the specified node. If the node given is null, it removes the first list node. It
has two scenarios: removing the list's head node and removing the node after a given
node.
The Data Value of a Node is Set to None if the Node is Not in a List - correct answer
False
The Node Class Has Two Data Members - correct answer True
Is Operator - correct answer An operator used to test if two objects share the same
memory location.
,Doubly-Linked List - correct answer A data structure for implementing a list ADT,
where each node has data, a pointer to the next node, and a pointer to the previous
node. The list structure typically points to the first node and the last node. It uses
pointers to both the next and previous nodes.
Positional List - correct answer A list where elements contain pointers to the next
and/or previous elements in the list. A doubly-linked list is an example.
Which Characteristic of an Algorithm is Independent in Nature? - correct answer Uses
an agnostic code repository
What is Referred to as a Data Structure that Stores Subitems? - correct answer
Record
Which Term Refers to a Type of Search Algorithm? - correct answer Linear
What Data Type do Heap Sorts Work With? - correct answer Tree-based data structure
,What Function is Used in Conjunction With a Merge Sort Algorithm? - correct answer
Recursion
Which Search Algorithm Has The Best Performance When the Data Set is Sorted? -
correct answer Interval Search
Which Format is Used to Store Data in a Hash Table? - correct answer Array
Which Term Refers to a Data Structure That Groups Related Items of Data Together? -
correct answer Record
Which Data Structure is Used to Store Unordered Items by Mapping Each Item to a
Location in an Array? - correct answer Hash Table
What is an Advantage That a Linked List Has Over an Array? - correct answer Grows
and shrinks as needed
, What Would be the Best Data Structure for a Hash Table with Simple Chaining? -
correct answer Doubly-linked list
What is the Height of this Tree? - correct answer Two
What is the Resulting Stack When the Push(1) Function is Implemented on this Stack
Yield? - correct answer 1,8,9,3,5
Which Term Describes a Way of Organizing, Storing and Performing Operations on
Data? - correct answer Data structure
Which Characteristic of a Class Allows it to be Used as an ADT? - correct answer It
consists of variables and methods
What is the First Element Visited in this List When Binary Searching for The Number 7?
[6,7,8,9,11,15,20] - correct answer 9
(New 2026/ 2027 Update) Questions &
Answers {Grade A} 100% Correct (Verified
Solutions)
RemoveAfter - correct answer An operation for a singly-linked list that removes the
node after the specified node. If the node given is null, it removes the first list node. It
has two scenarios: removing the list's head node and removing the node after a given
node.
The Data Value of a Node is Set to None if the Node is Not in a List - correct answer
False
The Node Class Has Two Data Members - correct answer True
Is Operator - correct answer An operator used to test if two objects share the same
memory location.
,Doubly-Linked List - correct answer A data structure for implementing a list ADT,
where each node has data, a pointer to the next node, and a pointer to the previous
node. The list structure typically points to the first node and the last node. It uses
pointers to both the next and previous nodes.
Positional List - correct answer A list where elements contain pointers to the next
and/or previous elements in the list. A doubly-linked list is an example.
Which Characteristic of an Algorithm is Independent in Nature? - correct answer Uses
an agnostic code repository
What is Referred to as a Data Structure that Stores Subitems? - correct answer
Record
Which Term Refers to a Type of Search Algorithm? - correct answer Linear
What Data Type do Heap Sorts Work With? - correct answer Tree-based data structure
,What Function is Used in Conjunction With a Merge Sort Algorithm? - correct answer
Recursion
Which Search Algorithm Has The Best Performance When the Data Set is Sorted? -
correct answer Interval Search
Which Format is Used to Store Data in a Hash Table? - correct answer Array
Which Term Refers to a Data Structure That Groups Related Items of Data Together? -
correct answer Record
Which Data Structure is Used to Store Unordered Items by Mapping Each Item to a
Location in an Array? - correct answer Hash Table
What is an Advantage That a Linked List Has Over an Array? - correct answer Grows
and shrinks as needed
, What Would be the Best Data Structure for a Hash Table with Simple Chaining? -
correct answer Doubly-linked list
What is the Height of this Tree? - correct answer Two
What is the Resulting Stack When the Push(1) Function is Implemented on this Stack
Yield? - correct answer 1,8,9,3,5
Which Term Describes a Way of Organizing, Storing and Performing Operations on
Data? - correct answer Data structure
Which Characteristic of a Class Allows it to be Used as an ADT? - correct answer It
consists of variables and methods
What is the First Element Visited in this List When Binary Searching for The Number 7?
[6,7,8,9,11,15,20] - correct answer 9
