Subex Interview Questions and Answers

Q1. Difference between Bagging and Boosting ?
Ans. 
Bagging and Boosting are ensemble learning techniques used to improve model performance.
• Bagging involves training multiple models on different subsets of the data and averaging their predictions.

• Boosting involves training models sequentially, with each model focusing on the errors of the previous model.

• Bagging reduces variance and overfitting, while boosting reduces bias and underfitting.

• Examples of bagging algorithms ...read more
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Q2. Why do we need logistic regression when we can use linear regression ?
Ans. 
Logistic regression is used when the dependent variable is categorical, while linear regression is used for continuous variables.
• Logistic regression predicts the probability of an event occurring, while linear regression predicts the value of a dependent variable.

• Logistic regression uses a sigmoid function to map the output to a probability value between 0 and 1.

• Linear regression assumes a linear relationship between t...read more
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Q1. What are your salary expectations?
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Q2. Why are you looking for a change?
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Q3. Tell me about yourself.
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Q1. About yourself, process improvement and simplification related, your experience related questions.
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Q1. Domain knowledge and projects
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Q1. Domain knowledge and projects
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Q1. Applied through LinkedIn and was shortlisted 1st round was a discussion about current experience and domain knowledge, questions around revenue assurance areas
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Q2. Later was asked some domain questions around telecom frameworks and TMforum frameworks
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Was given a business case and was asked to come up with a PPT presentation for a consulting engagement with

Scope
Approach
Timelines
Deliverables
Recommendations

In the area of revenue assurance for a telecom client

Mathematics and calculations

Problems given,you have to provide written code solutions

Q1. Interview with the tech person
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Q2. Wrote a code to retrieve file in C
Ans. 
Code to retrieve a file in C
• Use the fopen() function to open the file

• Use the fread() function to read the contents of the file

• Use the fclose() function to close the file
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Q1. Find the number of triangles in the given figure. Where do you see yourself five years from now? Tell me about yourself.
Ans. 21,in a better position in your company. I gave a description about myself and my skills.
Answered by Varalakshmi Talur
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Q1. What will you do to see yourself here (five years) from now? How soon do you see yourself here?
Ans. I will give my best to understand the job requirements and learn the ropes to get to where you are,in 10 years,just the time required to be able to see a junior in a senior position.
Answered by Varalakshmi Talur
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