TVS Credit Data Entry Operator and Computer Operator Interview Questions and Answers

Asked questions of finance and aptitude

Q1. What is machine learning?
Ans. 
Machine learning is a branch of artificial intelligence that involves developing algorithms and models that enable computers to learn from and make predictions or decisions based on data.
• Machine learning is a subset of artificial intelligence that focuses on developing algorithms that can learn from and make predictions or decisions based on data.

• It involves training models on large datasets to recognize patterns and m...read more
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Q2. What do you know about SQL?
Ans. 
SQL is a programming language used for managing and manipulating relational databases.
• SQL stands for Structured Query Language

• It is used to retrieve and manipulate data in relational databases

• Common SQL commands include SELECT, INSERT, UPDATE, DELETE

• SQL can be used to create tables, indexes, and views

• Examples of SQL databases include MySQL, PostgreSQL, Oracle
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Q3. What you know about software Development?
Ans. 
Software development involves creating, designing, testing, and maintaining software applications.
• Software development includes coding, testing, debugging, and documenting software applications.

• Developers use programming languages like Java, Python, C++, etc. to write code.

• Agile and Waterfall are common software development methodologies.

• Version control systems like Git are used to manage code changes.

• Software developm...read more
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Q1. What are the algorithms you know in machine learning and their details ?
Ans. 
Various machine learning algorithms with brief details
• Supervised Learning: Linear Regression, Logistic Regression, Support Vector Machines (SVM), Decision Trees, Random Forest

• Unsupervised Learning: K-means Clustering, Hierarchical Clustering, Principal Component Analysis (PCA)

• Reinforcement Learning: Q-Learning, Deep Q-Networks (DQN)

• Neural Networks: Convolutional Neural Networks (CNN), Recurrent Neural Networks (RNN), L
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Q2. Python questions
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1 hour coding test on intermediate python programming

Asked about a case study on whom to give a loan among 1000 customers

Q1. What is your current role ?
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Q2. Why are you looking for a job change?
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Q1. Python based list iteration, SQL join based questions
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Q1. What are the project you have worked upon ?
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Q1. SQL Basics and Good Communication
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Q2. Structured Profile Summary
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Q1. What is indexing
Ans. 
Indexing is a technique used to optimize the performance of databases by creating a data structure that allows for quick retrieval of data.
• Indexing involves creating a data structure that maps the values of a particular column in a database table to their physical storage locations on disk.

• It helps in speeding up data retrieval operations by allowing the database to quickly locate the rows that satisfy a certain condit...read more
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Pandas and SQL questions and some business case

Q1. The head of the vertical took interview, explained role and asked about my experience.
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Q2. What project did you work on?
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Q1. A senior data scientist asked technical questions on my experience.
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Q2. What is the advantage or lstm over rnn.
Ans. 
LSTM has better memory retention than RNN.
• LSTM can remember long-term dependencies better than RNN.

• LSTM has a gating mechanism that controls the flow of information.

• LSTM can handle vanishing gradient problem better than RNN.

• LSTM is more suitable for tasks that require long-term memory, such as speech recognition and language translation.
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Q3. What is multicollinearity and what are its effects?
Ans. 
Multicollinearity is a phenomenon where two or more independent variables in a regression model are highly correlated.
• It can lead to unstable and unreliable estimates of regression coefficients.

• It can make it difficult to determine the individual effect of each independent variable on the dependent variable.

• It can also result in inflated standard errors and p-values, making it difficult to identify statistically signif...read more
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Q1. What is Ram? What is Rom?
Ans. 
RAM stands for Random Access Memory, a type of computer memory that can be accessed randomly. ROM stands for Read-Only Memory, a type of memory that stores data permanently.
• RAM is volatile memory used by the computer to store data and program instructions temporarily.

• ROM is non-volatile memory that stores firmware and cannot be easily modified or deleted.

• RAM is faster but loses data when power is turned off, while ROM ...read more
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Q2. Which language understand the computer?
Ans. 
Computers understand machine language, which is a set of binary codes representing instructions that the computer can execute.
• Computers understand machine language, which consists of binary code representing instructions.

• High-level programming languages like Python, Java, C++ are used to write code that is then translated into machine language.

• Compilers and interpreters are used to convert high-level code into machine
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Q1. What is the machine language?
Ans. 
Machine language is the lowest-level programming language that directly corresponds to instructions executed by a computer's CPU.
• Machine language consists of binary code representing instructions that can be executed by a computer's central processing unit (CPU)

• It is the lowest-level programming language and is specific to the type of CPU being used

• Machine language is difficult for humans to read and write, as it is co...read more
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Q1. What does BIOS works for?
Ans. 
BIOS works as a firmware that initializes hardware components during the boot process of a computer.
• BIOS stands for Basic Input/Output System

• It is responsible for initializing and testing hardware components like the CPU, memory, and storage devices

• BIOS also provides the necessary instructions for the operating system to boot up

• It is stored on a ROM chip on the motherboard
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