Birlasoft Interview Questions, Process, and Tips

Q1. What is closure in js?
Ans. 
Closure in JavaScript is the combination of a function and the lexical environment within which that function was declared.
• Closure allows a function to access variables from its outer scope even after the outer function has finished executing.

• It is created every time a function is created, and it maintains a reference to the variables from its outer scope.

• Closure is commonly used in event handlers, callbacks, and maint
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Q1. What is concurrent Hashmap?
Ans. 
ConcurrentHashMap is a thread-safe version of HashMap in Java.
• ConcurrentHashMap allows multiple threads to read and write to the map concurrently without causing a ConcurrentModificationException.

• It achieves this by dividing the map into segments, each with its own lock, allowing multiple threads to access different segments simultaneously.

• ConcurrentHashMap is part of the java.util.concurrent package in Java.

• Example: C
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Q1. Redux,React js,Html,css, javascript questions
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Q1. Coding based round
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Q1. Low level design round
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Q1. What is Intent Lifecycle of Fragment
Ans. 
Intent is a messaging object used to request an action from another app component.
• Intent is used to start activities, services, and broadcast receivers in Android.

• It can also be used to pass data between components.

• There are two types of intents: explicit intents and implicit intents.
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Q2. Different Types of Intent
Ans. 
Different types of Intent in Android are explicit and implicit intents.
• Explicit Intent: Used to start a specific component within the same application.

• Implicit Intent: Used to request an action from another app component.

• Example: Explicit Intent - startActivity(new Intent(this, SecondActivity.class));

• Example: Implicit Intent - Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com"));
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Q3. Service and Types of Service
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Services in Android are components that run in the background to perform long-running operations.
• There are two types of services in Android: Started Services and Bound Services.

• Started Services are used for tasks that need to run independently of an activity, such as playing music in the background.

• Bound Services are used to interact with other components in the application, such as activities or fragments.

• Services can...read more
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Kotlin Coding questions. How to add 2 Strings in kotlin,