Birlasoft Senior Software Developer Interview Questions, Process, and Tips

Q1. Related to my domain, windows os related, Patch management, active directory etc
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Q1. Same questions in depth for second round
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Q1. What are your salary expectations?
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Q1. About soa 11g and 12c
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Q2. Xa and non xa difference
Ans. 
XA is a distributed transaction protocol while non-XA is not.
• XA is used for distributed transactions that involve multiple resources.

• Non-XA is used for local transactions that involve a single resource.

• XA ensures transactional consistency across multiple resources.

• Non-XA does not provide transactional consistency across multiple resources.

• XA involves a two-phase commit protocol while non-XA does not.
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Round duration - 60 minutes
Round difficulty - Medium

This round was completely based on Javascript and React.js.

Q1. What are closures?
Ans. 
Closures are functions that have access to variables from their containing scope even after the function has finished executing.
• Closures allow functions to access variables from their outer scope

• They maintain a reference to the variables even after the outer function has finished executing

• Closures are commonly used in event handlers and callbacks
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Q2. What is the prototype chain in JavaScript?
Ans. 
Prototype chain in JavaScript is the mechanism by which objects inherit properties and methods from other objects.
• In JavaScript, each object has a private property which holds a link to another object called its prototype.

• If a property or method is not found on an object, JavaScript will look for it in the object's prototype, and so on up the chain.

• This allows for inheritance in JavaScript, where objects can inherit pr
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Q3. What is the difference between 'slice' and 'splice' in programming?
Ans. 
Slice is a method that extracts a portion of an array without modifying the original array, while splice is a method that adds or removes elements from an array.
• Slice returns a shallow copy of a portion of an array based on start and end index parameters.

• Splice can add new elements to an array or remove existing elements by specifying the start index and number of elements to remove.

• Example: const arr = [1, 2, 3, 4, 5]...read more
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Q4. What is the difference between React context and React Redux?
Ans. 
React context is a built-in feature for passing data through the component tree, while React Redux is a library for managing global state in React applications.
• React context is used for passing data down the component tree without having to pass props manually at every level.

• React Redux is a library that provides a centralized store for managing global state in a React application.

• React context is built into React, whi...read more
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Q5. What is a state in React and how is it used?
Ans. 
A state in React is a JavaScript object that stores data relevant to a component and can be updated over time.
• State is initialized in a component's constructor using this.state = {}

• State can be updated using this.setState() method

• State changes trigger re-rendering of the component
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Q6. What are some design patterns in JavaScript and how do they work?
Ans. 
JavaScript design patterns are reusable solutions to common problems in software design.
• Some common design patterns in JavaScript include Module, Singleton, Observer, Factory, and Prototype.

• Module pattern helps in creating encapsulated modules with private and public methods.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Observer pattern allows objects to subscribe a...read more
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