Cognam Technologies Interview Experience for Frontend Developer

Cognam has visited our campus for different roles

• Backend developer
• Frontend developer
• Cloud
• Testing

There are only two rounds.

Round 1: Written, which consists of MCQs and two Coding questions

• Section 1: It consists of Aptitude, reasoning, verbal, and quantitative questions.
• Section 2: It consists of Java questions.
• Section 3: It consists of javascript, fundamentals of DBMS questions, Computer networks, OOPS, ReactJs, etc.
• Section 4: (Coding Round): It consists of two coding questions, easy and medium, based on arrays and strings, and we have to code on their code editor, which supports multiple languages. They even allowed you to write proper logic if your test cases failed.

Round 2 (Interview): After shortlisting, students got the mail about an online interview scheduled.

The interviewer first asked me to introduce myself and the projects I worked on. Later, he said, one by one, we will move on frontend technologies

• HTML: what are block and inline elements, semantic tags, and where should we declare the link tags and script tag, what is!DOCTYPE, what’s diff in HTML5.
• CSS: What are the ways to center a div, diff between display: none and visibility: hidden, which have more specificity inline, internal or external css, how to define external css, what is css box model, z-index.
• Javascript: Interviewer told me to share my screen and have given me console based js questions like 3+ +”3″, type of null, write syntax of setTimeout, arrow functions, write object and do some operation, what are callback functions, closures, hoisting, diff between var, let and const, implement a counter, what are API’s, method of HTTP, what is diff between get and post, what are web app’s.
• ReactJS: What you made using reactjs , what is reactjs, is it a library or framework, write the syntax of useState, why we use useEffect, and what is useMemo.

React Native: what is View, why to choose to react native, and some more basic questions.