Optimize IT Systems Associate Software Engineer Interview Questions and Answers for Experienced

Q1. Oops, DS, Sql programming
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Q2. Use of zip file
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A zip file is a compressed file format used to store multiple files and folders together.
• Zip files are commonly used for reducing file size and organizing multiple files into a single archive.

• They can be created, extracted, and manipulated using various software tools.

• Examples of software that can work with zip files include WinZip, 7-Zip, and built-in tools like Windows Explorer.

• Zip files can be password protected for...read more
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Q1. 30 minutes of discussion.
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Q1. 75 minutes of discussion
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60mintues DSA level coding exam

Q1. What is singleton design pattern
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Singleton design pattern restricts the instantiation of a class to a single instance and provides global access to it.
• Used when only one instance of a class is required throughout the application

• Provides a global point of access to the instance

• Implemented using a private constructor, static method, and static variable

• Example: Logger class, Database connection class
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Q2. C# LINQ queries for group and sum data from data table
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C# LINQ queries for group and sum data from data table
• Use GroupBy() method to group data based on a specific column

• Use Sum() method to calculate the sum of a column

• Use Select() method to select the required columns
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Q3. Solid design principles
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Solid design principles are a set of guidelines for writing maintainable and scalable code.
• Single Responsibility Principle (SRP) - each class should have only one responsibility

• Open/Closed Principle (OCP) - classes should be open for extension but closed for modification

• Liskov Substitution Principle (LSP) - subclasses should be able to replace their parent classes without affecting the program's correctness

• Interface Se...read more
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Q4. OOPS concepts ,like association and all
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Q1. Write a program to check if string is a anagram
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Program to check if a string is an anagram
• Create a function that takes in two strings as input

• Remove all spaces and convert both strings to lowercase

• Sort both strings and compare if they are equal to determine if they are anagrams
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Q2. What is react lifecycle method
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React lifecycle methods are special methods that are automatically called by React at specific points in a component's life cycle.
• React components have several lifecycle methods such as componentDidMount, componentDidUpdate, componentWillUnmount, etc.

• These methods allow developers to perform actions at specific points in a component's life cycle, such as fetching data, updating the UI, or cleaning up resources.

• Understa...read more
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Create a web app to perform cred operation

Q1. ACID Properties
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ACID properties are a set of properties that guarantee database transactions are processed reliably.
• Atomicity: Ensures that all operations in a transaction are completed successfully or none at all.

• Consistency: Ensures that the database remains in a consistent state before and after the transaction.

• Isolation: Ensures that the execution of multiple transactions concurrently does not interfere with each other.

• Durability:...read more
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Q2. Mid point of a linked list
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To find the mid point of a linked list, use two pointers - one moving at double the speed of the other.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move the slow pointer by one node and the fast pointer by two nodes until the fast pointer reaches the end of the list.

• The node at which the slow pointer is currently pointing is the mid point of the linked list.
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Q3. Merge Sort Algorithm
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Merge Sort is a divide and conquer algorithm that divides the input array into two halves, sorts them separately, and then merges them.
• Divide the array into two halves recursively

• Sort each half separately

• Merge the sorted halves back together
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Q4. Foreign key in relational database
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Foreign key is a field in a relational database table that links to a primary key in another table.
• Ensures referential integrity between tables

• Used to establish relationships between tables

• Prevents orphan records

• Can be used to enforce constraints
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Q5. Max sum subarray problem
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Max sum subarray problem involves finding the subarray with the largest sum within an array.
• Iterate through the array and keep track of the current sum and maximum sum seen so far.

• If the current sum becomes negative, reset it to 0 as it won't contribute to the maximum sum.

• Return the maximum sum found.

• Example: For array [-2, 1, -3, 4, -1, 2, 1, -5, 4], the max sum subarray is [4, -1, 2, 1] with sum 6.
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Good Knowledge of DSA is required