ALTEN Trainee Interview Questions and Answers

C language and aptitude test

Q1. C language questions
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Q2. C++ language questions
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About GDP and current happenings.
Drawbacks of Social media.

Q1. Tell me about your self, general questions, selected based on English communication
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Q1. What is cloud conputing
Ans. 
Cloud computing is the delivery of computing services over the internet, including storage, servers, databases, networking, software, and more.
• Allows users to access and store data and applications on remote servers instead of on local devices

• Provides scalability, flexibility, and cost-efficiency for businesses

• Examples include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform
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Q2. How sql execute
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SQL executes by parsing the query, creating an execution plan, and retrieving data from the database.
• SQL query is sent to the database server for processing

• Database server parses the query to understand the operations to be performed

• An execution plan is created to optimize the query performance

• Data is retrieved from the database based on the query criteria

• Results are returned to the user
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Q1. Tell me about yourself
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Q2. What are your hobbies
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Q1. What is Data Science and Machine Learning. Name few algorithms and if I have used any of them in my projects or learning.
Ans. 
Data Science is the study of data to extract insights and knowledge. Machine Learning is a subset of Data Science that uses algorithms to learn patterns from data.
• Data Science involves collecting, cleaning, analyzing, and interpreting data to make informed decisions

• Machine Learning algorithms include Linear Regression, Decision Trees, Random Forest, K-Means Clustering, and Neural Networks

• I have used Random Forest algor...read more
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Q2. What is Decision tree and how it works and what principle it follows. What is Keras and Random forest where it is used and for why it is used.
Ans. 
Decision tree is a tree-like model used for classification and regression. Keras is a deep learning library and Random forest is an ensemble learning method.
• Decision tree is a supervised learning algorithm that works by recursively splitting the dataset into subsets based on the most significant attribute.

• Keras is a high-level neural networks API written in Python that runs on top of TensorFlow, CNTK, or Theano. It is ...read more
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Programming, dsa, oops ,dbms,cloud

Basic dsa questions based on strings lists array