Queue, Hash, Tree and Graph

What is the main characteristic of a Queue data structure?

• Random Access

• First In First Out (FIFO)

• Last In First Out (LIFO)

• Sorted Order

Which operation adds an element to the end of a Queue?

• rear()

• front()

• enqueue()

• dequeue()

What type of Queue allows insertion and deletion from both ends?

• Deque

• Simple Queue

• Circular Queue

• Priority Queue

What is a Hash Table primarily used for?

• Storing data in a sorted manner

• Key-value pair storage

• Graph representation

• Tree traversal

What is the purpose of a hash function in a Hash Table?

• To display data

• To delete elements

• To sort the data

• To map keys to indices

What is a common method for handling collisions in a Hash Table?

• Searching

• Stacking

• Chaining

• Sorting

In a binary tree, what is the maximum number of children a node can have?

• One

• Four

• Two

• Three

What is the term for the top node in a binary tree?

• Leaf

• Child

• Root

• Parent

Which of the following is a representation method for graphs?

• Stack

• Adjacency Matrix

• Array List

• Binary Tree

What does the 'size()' operation in a Queue return?

• The total number of elements

• The maximum capacity

• The last element

• The first element