Zidio Development Associate Software Engineer Interview Questions and Answers

Q1. Question related to React JS (which I've applied for) like Hooks Concept, Routes .
Add your answer
Q2. Basic JavaScript coding questions
Add your answer

Q1. React Hooks concept-based coding question. Show Increment, decrement button with functionality using Hooks Concept
Add your answer
Q2. Write a code for toggle switching with CSS.
Ans. 
Toggle switching with CSS code example
• Use a checkbox input and label elements

• Apply CSS styles to hide the checkbox and style the label as a button

• Use the :checked pseudo-class to toggle styles based on checkbox state
Answered by AI
Add your answer

Q1. They ask generally about yourself and your experience background
Add your answer

Q1. Most of the question related to NLP.
Add your answer
Q2. What is the order of efficiency among MobileNet, DenseNet, and EfficientNet?
Ans. 
EfficientNet is the most efficient, followed by MobileNet and then DenseNet.
• EfficientNet is the most efficient among the three models due to its use of compound scaling and efficient building blocks.

• MobileNet is less efficient than EfficientNet but more efficient than DenseNet, as it uses depthwise separable convolutions to reduce computational cost.

• DenseNet is the least efficient among the three models, as it has a hi...read more
Answered by AI
Add your answer
Q3. Did they request me to write a lambda function in python? How handle the files using pandas
Add your answer

It includes multiple-choice questions for the field you are applying to.

Some basic data structure and algorithm questions; you can choose your preferred language to code.

Q1. What type of company do you prefer to work for?
Add your answer
Q2. What is JIT in Java?
Add your answer

Q1. What is time complexity, and how can it be reduced?
Add your answer
Q2. What are the advantages and disadvantages of different search methods?
Add your answer

Q1. Rate yourself in js, node js, react, MongoDB (separately)
Add your answer
Q2. Typeof null, typeof undefined, typeof {}, typeof NaN
Add your answer
Q3. What changes came in es6
Ans. 
ES6 introduced several new features and improvements to JavaScript, making it more powerful and efficient.
• Arrow functions for more concise syntax

• Let and const for block-scoped variables

• Classes for easier object-oriented programming

• Template literals for easier string interpolation

• Default parameters and rest parameters for function arguments

• Destructuring assignment for easier data extraction

• Promises for asynchronous prog
Answered by AI
Add your answer
Q4. This keyword, closures, hoisting
Add your answer
Q5. Are let and cont variables hoisted?
Ans. 
Yes, let and const variables are hoisted but not initialized.
• let and const variables are hoisted to the top of their block scope, but they are not initialized until the actual line of code is executed.

• This means that you cannot access a let or const variable before it is declared in the code.

• For example, trying to access a let variable before it is declared will result in a ReferenceError.
Answered by AI
Add your answer
Q6. What is global context
Ans. 
Global context refers to the overall environment or setting in which something exists or operates.
• Global context encompasses all variables, functions, and objects that are accessible throughout an entire program.

• It can be thought of as the 'big picture' view of a program's execution.

• In web development, global context includes the window object in JavaScript.
Answered by AI
Add your answer
Q7. What is temporal deadzone
Ans. 
Temporal dead zone is a period during the variable creation process where accessing the variable results in a ReferenceError.
• Occurs when trying to access a variable before it has been declared with let or const

• Happens due to the variable being in the temporal dead zone until it is declared

• Example: accessing a variable before its declaration will result in a ReferenceError
Answered by AI
Add your answer
Q8. What is modules? types of modules in nodejs
Ans. 
Modules in Node.js are reusable blocks of code that encapsulate related functionality.
• Modules in Node.js can be built-in modules like fs (file system) or third-party modules like express.

• Modules help in organizing code into separate files for better maintainability and reusability.

• Modules can be imported using the require() function in Node.js.
Answered by AI
Add your answer
Q9. Index in mongodb, why we need index, is index good or bad?
Ans. 
Indexes in MongoDB improve query performance by allowing the database to quickly locate and retrieve specific documents.
• Indexes help to speed up query performance by allowing the database to quickly locate specific documents based on the indexed fields.

• Without indexes, MongoDB would have to perform a collection scan, which can be slow and resource-intensive.

• Indexes can be created on single fields or compound fields to ...read more
Answered by AI
Add your answer
Q10. What are hooks , use of useRef
Ans. 
Hooks are a feature in React that allow you to use state and other React features in functional components. useRef is a hook that allows you to create a mutable object that persists for the lifetime of the component.
• Hooks are used to add state and lifecycle methods to functional components in React

• useRef is used to create a mutable reference that persists between renders

• useRef can be used to access DOM elements directl
Answered by AI
Add your answer
Q11. Fs module, http module, worker thread?
Add your answer
Q12. Why we use mongoose not mongodb driver?
Ans. 
Mongoose is an Object Data Modeling (ODM) library for MongoDB that provides a higher level of abstraction and simplifies interactions with the database.
• Mongoose provides schema validation which helps maintain data integrity.

• Mongoose simplifies querying and data manipulation with built-in functions.

• Mongoose supports middleware functions for pre and post processing of data operations.
Answered by AI
Add your answer

Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
Add your answer
Q2. Some coding questions
Add your answer

Basic aptitude questions were asked of easy level.

Q1. Dbms , oops , C++ , sql , aws , powerpoint
Add your answer

Q1. Peak element in array
Ans. 
A peak element in an array is an element that is greater than or equal to its neighbors.
• Iterate through the array and check if the current element is greater than its neighbors.

• If the element at index i is greater than or equal to elements at indices i-1 and i+1, it is a peak element.

• Example: ['1', '3', '2', '4', '1'] has peak elements at index 1 and 3.
Answered by AI
View 1 more answer
Q2. 2 dimentional array rotate 90 degree
Ans. 
Rotate a 2D array by 90 degrees clockwise
• Transpose the array

• Reverse each row of the transposed array
Answered by AI
View 1 more answer

Pollitices current generation

Aptitude questions were easy and basics

Q1. They asked about projects, SQL basics, oops concepts and about java concepts
Add your answer
Q2. It was an easy and average interview
Add your answer