# Data Structures and Algorithms (DSA) MCQ Quiz Online

Last Updated : 26 Dec, 2023

Welcome to our Data Structures and Algorithms (DSA) MCQ Quiz Online! This DSA MCQ is all about Quizzes of solving problems and learning the fundamentals of Algorithms and Data Structures. You’ll see multiple-choice questions (MCQs) that test how well you understand the basics and Data structure Algorithms.

Data Structures and Algorithms (DSA) MCQ Quiz Online

We’ll cover every topic of DSA like Array, Linked lists, stacks, queues, trees, Grpah, etc. We’ll also learn about algorithms sorting, searching, Greedy algorithms, etc.

## What is Data Structure?

A data structure is defined as a particular way of storing and organizing data in our devices to use the data efficiently and effectively. The main idea behind using data structures is to minimize the time and space complexities. An efficient data structure takes minimum memory space and requires minimum time to execute the data.

## What is Algorithm?

Algorithm is defined as a process or set of well-defined instructions that are typically used to solve a particular group of problems or perform a specific type of calculation. To explain in simpler terms, it is a set of operations performed in a step-by-step manner to execute a task.

## Quiz on Time and Space Complexities:

Here comes one of the interesting and important topics. The primary motive to use DSA is to solve a problem effectively and efficiently. How can you decide if a program written by you is efficient or not? This is measured by complexities. Complexity is of two types:

1. Time Complexity: Time complexity is used to measure the amount of time required to execute the code.
2. Space Complexity: Space complexity means the amount of space required to execute successfully the functionalities of the code.Â
You will also come across the termÂ Auxiliary SpaceÂ very commonly in DSA, which refers to the extra space used in the program other than the input data structure.