Tietoevry Interview Questions and Answers

Q1. OOPS concepts and C++
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Q2. Database question related to oracle
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Q1. Deep C++ and OOPS
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Q1. Salary negotiation
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Group discussion on advantages of facebook vs WhatsApp

Q1. What are the OOPS concepts? Explain
Ans. 
OOPS concepts are the fundamental principles of Object-Oriented Programming that help in designing and implementing software.
• Encapsulation: Bundling data and methods together in a class to hide the internal details.

• Inheritance: Creating new classes from existing classes to reuse code and establish a hierarchical relationship.

• Polymorphism: The ability of objects to take on many forms, allowing methods to be overridden a...read more
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Q2. What is normalization
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Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a database into smaller, more manageable tables

• Each table should have a primary key and only contain data that is related to that key

• Normalization helps to prevent data inconsistencies and anomalies

• There are different levels of normalization, with each level building on the ...read more
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Q3. Why not higher studies?
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Q4. Why prefer windows over Linux?
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Windows is preferred for its user-friendly interface and compatibility with popular software.
• Windows has a more intuitive and user-friendly interface compared to Linux.

• Many popular software and games are designed to run on Windows.

• Windows has better support for hardware drivers.

• Windows is more widely used in corporate environments.

• Windows offers better compatibility with Microsoft Office suite.

• Linux is preferred for it
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Q5. Explain Bubble sort and its program
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Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.
• Bubble sort compares adjacent elements in an array and swaps them if they are in the wrong order

• It repeats this process until the array is sorted

• It has a time complexity of O(n^2)

• Example: ['apple', 'banana', 'orange', 'grape'] -> ['apple', 'banana', 'grape', 'orange'
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Q1. SQL, API, UNIX, Payments SEPA SWIFT
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Q2. What are the api error codes?
Ans. 
API error codes are codes that indicate the type of error that occurred during an API request.
• API error codes are typically returned in the response body of an API request.

• They provide information about the specific error that occurred, helping developers troubleshoot and fix issues.

• Common API error codes include 400 Bad Request, 401 Unauthorized, 404 Not Found, and 500 Internal Server Error.
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Q1. About project and responsibilities
Ans. Daily calls, Status, blockers if any
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Q2. Salary discussion
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