Nium Software Engineer2 Interview Questions and Answers

They just asked about my previous experience and questions from my resume

Q1. Bsod , how to handle angry customer ,
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Q1. Java Basics Technical Questions
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Q2. In depth knowledge OOPS concepts and basic practice skills of SQL operations
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Q3. In depth practice of String Manipulations using looping and conditional statements
Ans. 
String manipulation using loops and conditionals for software engineering
• Use loops to iterate through each character in the string

• Use conditional statements to check for specific conditions and manipulate the string accordingly

• Examples: reversing a string, counting occurrences of a specific character, removing whitespace
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Q4. In depth knowledge of J2ee concepts with any ORM / MVC framework skills
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Q1. Java Basics Technical Questions
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Hackerrank was used for test

Q1. Implement BFS to find the nearest neighbour
Ans. 
Implement BFS algorithm to find the nearest neighbour
• Create a queue to store nodes to be visited

• Start with the initial node and add it to the queue

• While the queue is not empty, dequeue a node, visit its neighbours, and add them to the queue

• Repeat until the nearest neighbour is found
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Q2. Implement Priority queue using heap.
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Priority queue can be implemented using a heap data structure.
• Create a min heap or max heap based on the priority order needed.

• Insert elements into the heap based on their priority level.

• Remove elements from the heap based on their priority level.

• Heapify the heap after each insertion or deletion operation.

• Example: Implementing a min heap for a priority queue where lower values have higher priority.
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Basic aptitude questions based on profit and loss

Coding test based on c language and python programming

Communication assignment based on English

Q1. Self introduction
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Q2. Difine real time operation system
Ans. 
Real-time operating systems are designed to provide guaranteed response times for critical tasks.
• Real-time operating systems prioritize tasks based on their urgency and importance.

• They are commonly used in industries such as aerospace, automotive, and industrial automation.

• Examples include VxWorks, QNX, and FreeRTOS.
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Q1. Self introduction
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Q2. Project work questions
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Q1. What is Polymorphism and it’s type?
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Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were of the same class.
• Polymorphism is achieved through method overriding and method overloading.

• Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

• Method overloading is when a class has two or more methods with the ...read more
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Q2. What is Dependency Injection?
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Dependency Injection is a design pattern where the dependencies of an object are injected into it rather than created within it.
• It helps in achieving loose coupling between objects

• It makes testing easier as dependencies can be mocked or stubbed

• There are three types of Dependency Injection - Constructor Injection, Setter Injection, and Interface Injection

• Example: In a web application, the database connection object can ...read more
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Q3. How Garbage Collection works in .Net?
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Garbage Collection in .Net automatically manages memory by freeing up unused objects.
• Garbage Collector runs in the background and periodically checks for unused objects.

• It frees up memory by deallocating objects that are no longer being used.

• GC can be configured using different modes like Server, Workstation, Concurrent, etc.

• GC can also be manually triggered using GC.Collect() method.

• GC.SuppressFinalize() method can be...read more
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Q4. What is LINQ and some basic concept related it?
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Q1. What is Data Structure?
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Data structure is a way of organizing and storing data in a computer so that it can be accessed and used efficiently.
• Data structures are used to manage large amounts of data efficiently.

• They can be implemented using arrays, linked lists, trees, graphs, and other techniques.

• Examples include stacks, queues, hash tables, and binary search trees.

• Choosing the right data structure for a particular problem is important for op...read more
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Q2. Real time use of stack and Queue?
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Stack and Queue are used in real-time systems for managing tasks and events.
• Stack is used for managing function calls, undo/redo operations, and backtracking.

• Queue is used for managing events, scheduling tasks, and buffering data.

• Real-time systems use both data structures for managing tasks and events in a time-sensitive manner.

• Examples include task scheduling in operating systems, event handling in GUI applications, a
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