C949 WGU Terminology Questions and Answers

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C949 WGU Terminology Questions and
Answers

record
Ans: data structure that stores subitems, with a name associated with
each subitem

array
Ans: a data structure that stores an ordered list of items, with each item
is directly accessible by a positional index


homogeneous data elements

linked list
Ans: data structure that stores *ordered* list of items in nodes, where
each node stores data and has a pointer to the next node; can have
multiple subitems

binary tree
Ans: A data structure that consists of nodes, with one root node at the
base of the tree, and two nodes (left child and right child) extending
from the root, and from each child node


can have no children, single left or right, or both right and left

hash table
Ans: data structure that stores *unordered* items by mapping (or
hashing) each item to a location in an array

max-heap

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Ans: a tree that maintains the simple property that a node's key is
greater than or equal to the node's childrens' keys

min-heap
Ans: a tree that maintains the simple property that a node's key is less
than or equal to the node's childrens' keys

graph
Ans: data structure for representing connections among items, and
consists of vertices connected by edges

vertice
Ans: part of a graph the represents an item in a graph

edge
Ans: part of a graph that represents a connection between to vertices in
a graph

what is an advantage of a linked list over an array?
Ans: when inserting a new item at the beginning it causes no shift to the
data

ADT (Abstract data Type)
Ans: data type described by predefined user operations, such as "insert
data at rear", without indication how each operation is implemented

list
Ans: ADT for holding ordered data

stack




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