---
id: 67f4138c34cd9c4ac783ceef
title: Graphs and Trees Quiz
challengeType: 8
dashedName: quiz-graphs-and-trees
---

# --description--

To pass the quiz, you must correctly answer at least 18 of the 20 questions below.

# --quizzes--

## --quiz--

### --question--

#### --text--

What is a graph?

#### --distractors--

A linear data structure that follows the Last-In, First-Out principle. 

---

A data structure that stores multiple values of the same type that are contiguous in memory. 

---

A linear data structure that follows the First-In, First-Out principle. 

#### --answer--

A data structure used to represent the connections or relationships between objects or entities.

### --question--

#### --text--

Which of the following is NOT a typical scenario that can be represented using a graph?

#### --distractors--

social networks

---

transportation networks

---

communications networks

#### --answer--

virtual private networks

### --question--

#### --text--

Which of the following terms describes an object or entity that is part of the network depicted by a graph?

#### --distractors--

Cookie

---

Endpoint

---

CPU

#### --answer--

Node

### --question--

#### --text--

Which of the following terms describes the connections between nodes in a graph?

#### --distractors--

Gates

---

Connectors

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Vertices

#### --answer--

Edges

### --question--

#### --text--

What is an undirected graph?

#### --distractors--

A graph where the nodes are undirected but the edges are directed.

---

A graph where the edges have a specific direction.

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A graph where the nodes and edges connect at the midpoint.

#### --answer--

A graph where the edges don't have a specific direction.

### --question--

#### --text--

Which of the following refers to a graph in which each node is associated with a label or identifier in addition to its data?

#### --distractors--

Version labeled graph

---

Virtual labeled graph

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Vertical labeled graph

#### --answer--

Vertex labeled graph

### --question--

#### --text--

Which of the following refers to a directed graph with at least one cycle?

#### --distractors--

Cycling graph

---

Circulating graph

---

Circular graph

#### --answer--

Cyclic graph

### --question--

#### --text--

What is a weighted graph?

#### --distractors--

A specific type of edge labeled graph that shows only the direction of connections between nodes.

---

A specific type of edge labeled graph that assigns categories instead of numerical values to edges.

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A specific type of edge labeled graph that treats all edge weights as equal regardless of label.

#### --answer--

A specific type of edge labeled graph in which the labels on the edges represent values that can be compared and used to perform arithmetic operations.

### --question--

#### --text--

What is a directed acyclic graph?

#### --distractors--

A directed graph with one cycle.

---

A directed graph with three cycles.

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A directed graph with two cycles.

#### --answer--

A directed graph with no cycles.

### --question--

#### --text--

Which of the following refers to a graph with two or more groups of nodes that are not connected by any edges?

#### --distractors--

Disconnect graph

---

Disconnecting graph

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Disconnection graph

#### --answer--

Disconnected graph

### --question--

#### --text--

What is the Breadth-first search algorithm?

#### --distractors--

An algorithm that visits two nodes in one direction before moving another direction in the graph.

---

An algorithm that visits all nodes in one direction before moving another direction in the graph.

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An algorithm that visits four nodes at a time before moving to the next level in the graph.

#### --answer--

An algorithm that visits all neighboring nodes before moving to the next level in the graph.

### --question--

#### --text--

Which of the following algorithms will follow each branch as deep as possible before it backtracks?

#### --distractors--

Data-First Search

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Dock-First Search

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Daemon-First Search

#### --answer--

Depth-First Search

### --question--

#### --text--

Which of the following terms represents a two-dimensional list in which the rows and columns represent the graph's vertices?

#### --distractors--

Array matrix

---

Depth matrix

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Vertex matrix

#### --answer--

Adjacency matrix

### --question--

#### --text--

Which of the following terms represents an array or dictionary that stores all the neighbors of each node?

#### --distractors--

Cyclic list

---

Tuple list

---

Breadth list

#### --answer--

Adjacency list

### --question--

#### --text--

What must be true for a graph to be classified as a tree?

#### --distractors--

It must have at least one loop or cycle.

---

It must have at least two loops or cycles.

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It must have three loops or cycles.

#### --answer--

It cannot have loops or cycles.

### --question--

#### --text--

Which of the following is a type of tree in which each node can have at most two child nodes?

#### --distractors--

Depth tree

---

Spatial tree

---

Linear tree

#### --answer--

Binary tree

### --question--

#### --text--

What is a Trie?

#### --distractors--

A tree data structure used to store a set of numbers.

---

A tree data structure used to store a set of dictionaries.

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A tree data structure used to store a set of lists.

#### --answer--

A tree data structure used to store a set of strings.

### --question--

#### --text--

How does the priority queue data structure differ from a regular queue data structure?

#### --distractors--

A priority queue automatically removes duplicates before insertion.

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A priority queue always processes elements in the order they were added.

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A priority queue only stores elements of the same data type.

#### --answer--

A priority queue processes elements based on their priority.

### --question--

#### --text--

What are the two types of heaps?

#### --distractors--

Wide-heap and Tall-heap

---

Horizontal-heap and Vertical-heap

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Breadth-heap and Depth-heap

#### --answer--

Max-heap and Min-heap

### --question--

#### --text--

What are the average and worst case time complexities for inserting and extracting the minimum or maximum value from a heap?

#### --distractors--

`O(n log n)`

---

`O(1)`

---

`O(n)`

#### --answer--

`O(log n)`

