NIIT Software Engineer Interview Questions and Answers

Q1. Coding question: Given a sorted array of numbers. All numbers have freq of 2 in array except one number. Find that number with T.C of logn
Ans. 
Find the single number in a sorted array with frequency of 2 for all other numbers.
• Use binary search to find the number with different frequency.

• Check if the mid element is at even or odd index to determine which side to search next.

• Example: Input array [1, 1, 2, 2, 3, 3, 4, 4, 5] should return 5.
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Q2. Print left view of tree
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Print the left view of a tree by traversing the tree from left to right at each level
• Traverse the tree using level order traversal

• Print the first node at each level encountered during traversal
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Q1. Detailed discussion on projects
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Q2. Questions on O.S like about deadlocks,etc..
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Q1. About myself and my working skills and my previous experience
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Q2. What is expected salary
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Q3. Are willing to reloacte
Ans. 
Yes, I am willing to relocate for the right opportunity.
• I am open to relocating for a position that aligns with my career goals

• I have relocated for previous job opportunities and am comfortable with the process

• I understand the importance of being flexible and adaptable in the tech industry
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C#,Dotnet MVC,Webform ,sql server, write code ,they give task ask about and explanation.

Q1. Policy term and conditions and expectation
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Q2. Why i am leaving privious organization
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Mcq test on c#, sql, Mvc

Q1. Introduce your self?
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Q2. What is pipeline? Explained in brif?
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A pipeline is a series of interconnected steps or stages in a process, where output of one step is input to the next step.
• Pipeline is commonly used in software development for continuous integration and continuous delivery processes.

• Each step in the pipeline performs a specific task, such as building, testing, and deploying code.

• Pipeline automation tools like Jenkins, GitLab CI/CD, and Azure DevOps help in managing and
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Q3. Explained the dot net framework
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The .NET Framework is a software framework developed by Microsoft that provides a large library of pre-coded solutions to common programming problems.
• Developed by Microsoft

• Provides a large library of pre-coded solutions

• Supports multiple programming languages like C#, VB.NET, F#

• Consists of Common Language Runtime (CLR) and Framework Class Library (FCL)
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Q4. What Are The Different Components Of DOT-NET?
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The different components of DOT-NET include Common Language Runtime (CLR), Framework Class Library (FCL), and ASP.NET.
• Common Language Runtime (CLR) - provides various services such as memory management, exception handling, and security.

• Framework Class Library (FCL) - a collection of reusable classes, interfaces, and value types that provide access to system functionality.

• ASP.NET - a web application framework for buildi...read more
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Q5. What Is The Difference Between Abstract Classes And Interfaces In C#?
Ans. 
Abstract classes can have implementation details while interfaces cannot.
• Abstract classes can have method implementations while interfaces cannot.

• A class can inherit only one abstract class but can implement multiple interfaces.

• Abstract classes can have access modifiers on their members while interfaces cannot.

• Interfaces are used to define a contract for classes to implement.

• Abstract classes are used to provide a commo
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Q1. What is difference between authentication and authorisation
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Authentication verifies the identity of a user, while authorization determines what a user can access.
• Authentication confirms the user's identity through credentials like username and password

• Authorization determines the user's permissions and access levels to resources

• Authentication precedes authorization in the security process

• Example: Logging into a system (authentication) vs. accessing specific files or data within
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