3i Infotech Associate Interview Questions and Answers

Typing test 40 WPM and Grammar

Q1. Where do you see yourself in this company in next 2 years ?
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Q2. What is the role of a customer service
Ans. 
The role of customer service is to assist customers with their inquiries, concerns, and issues to ensure a positive experience.
• Providing assistance and support to customers

• Resolving customer complaints and issues

• Answering customer inquiries and providing information

• Ensuring customer satisfaction and retention

• Building positive relationships with customers
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Q1. Explain random forest
Ans. 
Random forest is an ensemble learning method that builds multiple decision trees and merges them to improve accuracy and prevent overfitting.
• Random forest is a type of ensemble learning method.

• It builds multiple decision trees during training.

• Each tree is built using a subset of the training data and a random subset of features.

• The final prediction is made by averaging the predictions of all the individual trees.

• Random...read more
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Q2. What is boosting
Ans. 
Boosting is a machine learning ensemble technique where multiple weak learners are combined to create a strong learner.
• Boosting is an iterative process where each weak learner is trained based on the errors of the previous learners.

• Examples of boosting algorithms include AdaBoost, Gradient Boosting, and XGBoost.

• Boosting is used to improve the accuracy of models and reduce bias and variance.
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Q1. Exceptions and thread implementation
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Q2. Basics of restful web services
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General questions asked

Q1. Basic tech questions
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Q2. Some codenasked
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Q1. General info asked
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Q1. Regarding project done in college
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Q2. Basic java coding questions
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Q3. SQL topics and queries
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Q1. How will you manage work pressure
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Q2. Strength and weakness
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There were 2 coding questions asked. If one question is solved you are qualified.

Q1. There are 3 technical interviews. First tech interview is simple. Then the difficulty arise in further rounds.
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Q1. They ask to solve the coding question with different logic.
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Q1. Tell me about yourself
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Q1. 1. What is different between interface and abstract 2.what is the virtual method and uses
Ans. 
Interface defines a contract for classes to implement, while abstract class can have both abstract and concrete methods. Virtual method can be overridden in derived classes.
• Interface only contains method signatures, while abstract class can have method implementations.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Virtual method in C# allows a method in a base class to be overrid...read more
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