JetLearn Coding Instructor Interview Questions and Answers

They have an Online Aptitude cum coding test which contains some 20-30 Question to be done in 3Hrs.
20 Questions of Aptitude and 10 Questions of coding(Which includes Display output and correct the program Questions)

Easy Interview lasting about 30-45 Mins
They mostly ask questions based on projects and they like to see some certifications.
DSA questions were easy to medium.

Q1. Related to resume
Ans. 
My resume highlights my skills, experiences, and achievements relevant to the consulting role.
• Education: Graduated with a degree in Business Administration from XYZ University.

• Work Experience: Worked as a Business Analyst at ABC Corp, improving processes by 20%.

• Skills: Proficient in data analysis tools like Excel and Tableau.

• Certifications: Completed a certification in Project Management (PMP).

• Achievements: Led a team ...read more
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Q2. What is the regularization technique?
Ans. 
Regularization techniques prevent overfitting in models by adding a penalty for complexity.
• L1 Regularization (Lasso): Adds absolute value of coefficients as penalty. Example: Feature selection in linear regression.

• L2 Regularization (Ridge): Adds squared value of coefficients as penalty. Example: Reduces model complexity in regression.

• Elastic Net: Combines L1 and L2 penalties. Example: Useful when there are multiple cor...read more
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3 coding questions any programming language

Q1. Technical Interview based on your programming skills
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Q2. 1.Find the possible permutation of the given string 2. Remove 3 from the given input (Number) and input should be taken from the user 3. Check whether the given string is Anagram without using map DATA s...read more
Ans. 
Answering questions related to string permutations, removing numbers, and checking for anagrams without using map data structure.
• To find permutations of a string, use recursion to swap characters at each position.

• To remove a specific character (e.g. '3') from a string, iterate through the string and build a new string without the character.

• To check for anagrams without using a map data structure, sort both strings and ...read more
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Q1. Introduce yourself and are you willing to relocate And salary discussion. That's it
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Both Aptitude and coding

Q1. Basic Java questions
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Q1. Salary discussion only
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Logical reasoning and non verbal questions

Basic dsa concepts and find the syntax error

Q1. Basics about oops dsa question and question related to your projects
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Test consist of 25 Apatitude Question and 10 Coding problems of Debugging code, Find Output, Set Matrixs, Valid Matrix, Height of N-ary Tree, Sorting, Linked List etc. So prepare well with standard dsa problems of any sheet (striver sheet)

Q1. Technical Round consist of one coding question and detailed discussion on my smart india hackathon project and counter question on it with some of question on performance and security.
Ans. Performance Technique in React/Node ReactJS Interview Question
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Q2. Find 2nd Largest Element in array
Ans. 
Iterate through array to find 2nd largest element
• Iterate through array and keep track of largest and second largest elements

• Handle edge cases like empty array or array with less than 2 elements

• Example: ['3', '5', '2', '7', '1'] should return '5'
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Q3. Question on Redux also asked to pass information in reactjs.
Ans. Before interview refer redux documentation and standard interview question.
Answered by Dharmesh Vala
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Q4. Authentication and Authorization question on my project
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Q5. Security issues in your project
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My name is amar reverse the string without using inbuilt method

Q1. What is nodejs and what is promise. What is closures
Ans. 
Node.js is a runtime environment for executing JavaScript code outside of a web browser. Promises are objects representing the eventual completion or failure of an asynchronous operation. Closures are functions that have access to their own scope, as well as the scope in which they were defined.
• Node.js is a runtime environment that allows you to run JavaScript on the server-side.

• Promises are used in asynchronous progra...read more
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