Rediff.com Software Engineer Interview Questions and Answers

Q1. Sql join questions
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Q2. Python decorartors
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Q1. By when can u join, hr told me they shared my resume with multiple managers and waiting for it to be shortlisted
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Q1. Acid, SQL vs nosql, react based, asynchronous working of js, event loop, etc. How will u design a matrimony site such that search query will contain multiple preferences - age, height, income, etc (say 100...read more
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Q2. How to implement any one of acid property.
Ans. 
To implement ACID property, use transactions to ensure atomicity, consistency, isolation, and durability of data.
• Use transactions to group related database operations together.

• Ensure that all operations within a transaction are completed successfully or none of them are.

• Maintain consistency by enforcing data integrity constraints.

• Isolate transactions to prevent interference from other transactions.

• Ensure durability by ...read more
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Q1. Js output questions. A recursion based coding problem. (Easy-medium)
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Q2. Was asked to develop an ui but i told the interviewer I'm more into backend so she asked me some backend questions after this. Didn't have to solve the ui task.
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Q3. I answered almost all questions.
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Q1. Basic questions on what you have mentioned in resume , design patterns , reactjs questions , explain your project
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Q1. 2 question on Data structure and algorithms (easy-medium and medium level questions)
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Q2. Related to array and matrix
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Q1. This also contained discussion on last company project and some basic question regarding different tech stack used. Then asked 2 questions on Data structure and algorithms (both medium level questions)
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Q2. Related to stack and linked list
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Q1. This was the Hiring Manager round. He asked different questions related to general programming like - Rest, Http, Websockets, TCP. Asked some questions from past company projects. Then asked one easy-mediu...read more
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Q2. Programming and Math related topics
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Some database questions,some java questions .

Q1. What is the difference between javascript and jQuery.
Ans. 
JavaScript is a programming language used for web development, while jQuery is a library built with JavaScript to simplify HTML document traversal and manipulation.
• JavaScript is a programming language, while jQuery is a library written in JavaScript.

• JavaScript can be used for a wide range of tasks, while jQuery is mainly used for DOM manipulation and event handling.

• JavaScript is a core technology for web development, w...read more
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Q2. Define different types of join
Ans. 
Different types of joins are used in SQL to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

• Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

• Full ...read more
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Q3. Define multithreading concept and exception handling.
Ans. 
Multithreading allows multiple threads to run concurrently, while exception handling deals with errors in a program.
• Multithreading involves running multiple threads simultaneously to improve performance and responsiveness.

• Threads share the same memory space but have their own program counter and registers.

• Exception handling is a mechanism to handle errors or exceptional situations in a program.

• It helps prevent the prog...read more
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DSA medium leetcode questions - easy to solve

DSA medium 2 questions and core questions 1.5 hrs

Q1. Managerial round and company fit check
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Q2. Tell about company
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Q3. Why should we hire you?
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Q4. Tell something not in your resume
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Q5. How would you handle deadlines?
Ans. 
I prioritize tasks, communicate with stakeholders, and adjust resources as needed to meet deadlines.
• Prioritize tasks based on importance and urgency

• Regularly communicate with stakeholders to provide updates and address any issues that may impact deadlines

• Adjust resources or seek help from team members if necessary to meet deadlines
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