Infosys Interview Questions, Process, and Tips

Q1. Types of utilities in mainframe
Ans. 
Mainframe utilities are software programs used for various tasks like data management, job scheduling, and system maintenance.
• IEFBR14 - used for creating empty datasets

• IEBCOPY - used for copying datasets

• IEBGENER - used for generating datasets

• IDCAMS - used for defining and managing VSAM datasets

• DFSORT - used for sorting and merging datasets
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Q2. Differentiate between Comp vs Comp3
Ans. 
Comp is a binary data type with fixed length, while Comp3 is a packed decimal data type with variable length.
• Comp is binary and fixed length, while Comp3 is packed decimal and variable length

• Comp stores data in binary format, while Comp3 stores data in packed decimal format

• Comp uses 4 bytes for each field, while Comp3 uses variable length depending on the precision required

• Example: Comp field with value 1234 will be st...read more
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Q1. What is your salary expectation
Ans. 
My salary expectation is based on my experience, skills, and the market rate for Mainframe Developers.
• Consider my years of experience in Mainframe development

• Research the average salary for Mainframe Developers in the current market

• Factor in the location and size of the company
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Q2. What you want to leave your current organisation
Ans. 
Seeking new challenges and opportunities for growth.
• Looking for a more challenging role that allows me to further develop my skills

• Interested in exploring new technologies and methodologies

• Seeking a more supportive and collaborative work environment

• Want to take on more responsibility and leadership opportunities
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Q1. Explain Oop concepts
Ans. 
OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve problems.

• Objects have attributes (data) and methods (functions) that operate on the data.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Example: In a car simulation program, a 'Car' ob...read more
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Simple qaunt and verbal question

Q1. Introduce your self
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Q2. Project based question
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Q1. Oops principles
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Q2. Spring annotations
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Q3. Problem on string to write psuedo code
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Q1. What is Hypothesis testing
Ans. 
Hypothesis testing is a statistical method used to make inferences about a population based on sample data.
• It involves formulating a hypothesis about a population parameter, collecting data, and using statistical analysis to determine the likelihood of the hypothesis being true.

• There are two types of hypotheses: null hypothesis (H0) and alternative hypothesis (H1).

• Common tests for hypothesis testing include t-tests, ch...read more
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Q1. Explain about your project?
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Q2. Explain NUnit framework?
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Q1. Scenario based questions?
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Q2. Coding question?
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Q1. Expectation from Salary?
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Q2. Any more questions?
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