Infosys Public Services Software Developer Interview Questions and Answers

Q1. Strecture of sql statement
Ans. 
SQL statements are used to interact with databases by performing operations like querying, updating, and deleting data.
• SQL statements are made up of keywords like SELECT, INSERT, UPDATE, DELETE, etc.

• They are structured in a specific order, with clauses like WHERE, ORDER BY, GROUP BY, etc.

• Tables are referenced using their names, and conditions are specified to filter data.

• Joins can be used to combine data from multiple
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Q1. Sorting techniquea
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Q1. More than technology,a senior recruiter asks where you stay which gali you stay,which temple is near by,what your husband do,getting into more personal and final he will ask your janam kundali and tell you...read more
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Q1. Senior recruiter will ask more personal questions
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Q1. Java core and spring questions
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Q2. How would you find an element from a list
Ans. 
Use a loop to iterate through the list and compare each element with the target element
• Iterate through the list using a loop

• Compare each element with the target element

• Return the element if found, otherwise return null
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Q1. Oops interview,you have add new technology to advantage.
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Quantitative Aptitude

Stakeholders vs Shareholders

Analysis of financial time series

Very easy questions were asked in aptitude test. Anyone with good logical reasoning would easily pass through it.

Test was taken Hackerrank. One medium level question related to string was asked. Some fundamental questions about JavaScript and then a disussion on OOPs concepts.

Q1. This was a non-technical managerial round. Someone from leadership had a call in which he asked some behavorial questions, personal interests and discussed about company and its culture.
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Q1. Basic C++ questions: initialiser list and applications
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Q2. Questions on vector implementation
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Q3. Question on linux file system
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Q1. Design a logger class
Ans. 
A logger class to handle logging messages in an application
• Create a Logger class with methods like logInfo, logError, logWarning, etc.

• Use a file or database to store the log messages

• Include timestamp and severity level in each log message

• Implement log rotation to manage log file size
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Q2. What is RAII, rule of 3, 5. What is smart pointers and coding questions based on string
Ans. 
RAII is a resource management technique in C++. Rule of 3/5 refers to special member functions. Smart pointers are objects that manage memory automatically.
• RAII stands for Resource Acquisition Is Initialization, a C++ programming technique where resource management is tied to object lifetime.

• Rule of 3 states that if a class defines a custom destructor, copy constructor, or copy assignment operator, it should define all...read more
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