Tollplus Performance Engineer Interview Questions and Answers

Create an API using Notepad to check if a string is a palindrome or not.

Q1. Solid principal
Add your answer

There was coding test

Q1. 2 technical rounds
Add your answer
Q2. Merge sort algorithm
Ans. 
Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts them separately, and then merges them back together in sorted order.
• Divide the input array into two halves

• Recursively sort each half

• Merge the sorted halves back together
Answered by AI
Add your answer

Q1. Leetcode Easy question
Add your answer

Q1. Linux commands,
Add your answer
Q2. Cloud technologies different services (iaas, paas, saas)
Ans. 
Cloud technologies offer different services like IaaS, PaaS, and SaaS for varying levels of control and management.
• IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as virtual servers and storage.

• PaaS (Platform as a Service) offers a platform allowing customers to develop, run, and manage applications without dealing with infrastructure.

• SaaS (Software as a Service) deli...read more
Answered by AI
Add your answer
Q3. What do you know AWS
Add your answer

It was a Basic Aptitude Test

We were asked to do Sorting, SQL queries (join)

Q1. Can you tell me about yourself?
Ans. 
I am a passionate software engineer with 5 years of experience in developing web applications using various technologies.
• 5 years of experience in software development

• Proficient in developing web applications

• Skilled in using various technologies such as Java, JavaScript, and SQL
Answered by AI
Add your answer

Coding test was taken on hackerearcth pkatform there was a generic problem statement based on networking no need to pass minimum half of the test cases to clear the interview round

Q1. The next round was one on one round in this questions were mainly asked regarding the experience and then they were mainly focussing on the developers who know rails and python
Add your answer
Q2. Python and rails were majorly needed to clear the roeund
Add your answer
Q3. Problem statement can be founded on geeks for geeks
Add your answer

Chrome and Firefox Browser automation

Log file tail last n lines where n is configurable. Followup question on how you can optimize it further incase log file size is in TBs and incase it is cluster of servers

Q1. Detailed Technical background check and discussion on past projects.
Add your answer
Q2. Messaging queue and best practices
Ans. 
Messaging queues are used to manage asynchronous communication between different components of a system.
• Use a reliable messaging queue system like RabbitMQ or Apache Kafka

• Ensure messages are properly formatted and serialized

• Implement message acknowledgement and retry mechanisms

• Monitor queue health and performance

• Consider message ordering and partitioning for scalability

• Avoid long-running tasks in message handlers
Answered by AI
Add your answer
Q3. Binary Search Tree twisted question
Add your answer
Q4. Map Reduce concept for solving dictionary keywords
Ans. 
MapReduce is a programming model for processing large data sets in parallel.
• MapReduce divides the input data into chunks and processes them in parallel.

• It consists of two phases: Map and Reduce.

• Map function takes input data and converts it into key-value pairs.

• Reduce function takes the output of Map as input and combines the values with the same key.

• It is used for solving dictionary keywords by mapping each word to a k
Answered by AI
Add your answer

Q1. Can you provide an introduction about yourself?
Ans. 
I'm a passionate software engineer with a strong background in full-stack development and a love for solving complex problems.
• Education: Bachelor's degree in Computer Science from XYZ University.

• Experience: 3 years of experience in developing web applications using React and Node.js.

• Projects: Developed an e-commerce platform that increased sales by 30% within the first quarter.

• Skills: Proficient in JavaScript, Python, ...read more
Answered by AI
Add your answer
Q2. What qualifications have you obtained, and can you explain the project you completed during your engineering studies?
Ans. 
I hold a Bachelor's degree in Computer Engineering and developed a web-based project for managing student records.
• Bachelor's degree in Computer Engineering from XYZ University.

• Completed a capstone project on a web application for student record management.

• Utilized technologies like HTML, CSS, JavaScript, and Node.js.

• Implemented features such as user authentication, data visualization, and a responsive design.

• Collaborat...read more
Answered by AI
Add your answer

Q1. Why do you believe this company is a suitable fit for you?
Ans. 
This company aligns with my values, offers growth opportunities, and fosters innovation, making it an ideal environment for my skills.
• The company's commitment to innovation resonates with my passion for developing cutting-edge software solutions.

• I admire the collaborative culture here, which I experienced during my interactions with the team during the interview process.

• The emphasis on professional development and cont...read more
Answered by AI
Add your answer
Q2. Do you have any questions
Add your answer