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Cognition Techsystems Interview Questions and Answers
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1 interview found
Vg gowda
Assifnement hr other case
(1 Question)
- Q1. Tell me about yourself what was you're roles and responsibilities
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Anonymous
(12 Questions)
- Q1. Rate yourself in js, node js, react, MongoDB (separately)
- Q2. Typeof null, typeof undefined, typeof {}, typeof NaN
- 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
- Q4. This keyword, closures, hoisting
- 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.
- 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.
- 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
- 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.
- 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 ...
- 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
- Q11. Fs module, http module, worker thread?
- 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.
Skills evaluated in this interview
Salesforce Solution Architect II Interview Questions & Answers
Wilco Source
Kapil Patle
posted on 6 Dec 2024
(2 Questions)
- Q1. Architecture, Design, Proposal and All functoonal
- Q2. Detailed technical discussion
(2 Questions)
- Q1. Deep dive in design & architecture
- Q2. Deep dive in technical
(2 Questions)
- Q1. Tech cum management
- Q2. Stakeholder related
(2 Questions)
- Q1. Tell me about yourself
- Ans.
Experienced Senior Product Manager with a background in tech industry and a passion for driving product innovation.
Over 8 years of experience in product management roles
Strong background in the tech industry, with a focus on software development
Proven track record of successfully launching and managing products from concept to market
Passionate about driving product innovation and improving user experiences
Skilled in cr...
- Q2. Aptitude Question
(2 Questions)
- Q1. Experience Questions
- Q2. Hobbies and Passion
(2 Questions)
- Q1. Assignment Round with Review at the end
- Q2. Pitch GoComet to the founder
I applied via Company Website and was interviewed in Sep 2024. There was 1 interview round.
(4 Questions)
- Q1. Mvvm and Mvc architectures
- Q2. Gave Code snippets to find the output
- Q3. Swift basics and concepts like memory management
- Q4. Oops concepts and solid principles
NEHA SHARMA
Selected
I applied via Job Fair and was interviewed in Sep 2024. There were 2 interview rounds.
Coding test was basically asking about debugging codes related to java used in selenium & other SDLC cycle basic questions related to testing.
(3 Questions)
- Q1. Mobile testing questions
- Q2. Real life logical questions
- Q3. OOPs concept relating to testing
I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.
(2 Questions)
- Q1. Suggest improvement in WinZO App?
- Q2. How to prevent fraud in Chess?
Koushik
Selected
I applied via Campus Placement and was interviewed in Sep 2024. There were 3 interview rounds.
Aptitude questions with some basic coding questions
They have given 3 coding questions and some pseudo codings
(2 Questions)
- Q1. Tell about your self
- Q2. Some coding questions
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Tell me about your self.
- Ans.
I am a passionate software engineering student with experience in web development and a strong desire to learn and grow.
Currently pursuing a degree in Computer Science
Proficient in programming languages such as Java, Python, and JavaScript
Experience with front-end technologies like HTML, CSS, and React
Completed internships at tech companies like XYZ Inc.
Interested in exploring machine learning and artificial intelligen
- Q2. What's your skill and experience.
- Ans.
I have strong skills in programming languages such as Java, Python, and C++, as well as experience with web development and database management.
Proficient in Java, Python, and C++ programming languages
Experience with web development using HTML, CSS, and JavaScript
Familiarity with database management systems like MySQL and MongoDB
Interview Preparation Tips
- Java
- Javascript
- React.Js
- Node.Js
- MySQL
- OOPS
- DSA
Hacker Rank Test that was not much hard
(2 Questions)
- Q1. Basics of python, SQL and pyspark
- Q2. Projects written in the resume
(2 Questions)
- Q1. On databricks architecture
- Q2. Previous project experience
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