Satnam Webtech Interview Questions and Answers

Q1. Basics questions in javascript questions like what is closures, what projects do you have created. How many threads run in React Native.
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Q1. What projects you have developed
Ans. 
I have developed various projects including a mobile app for tracking fitness goals and a web application for managing inventory.
• Developed a mobile app for tracking fitness goals using React Native

• Created a web application for managing inventory using Angular and Node.js

• Implemented a data analytics platform for analyzing user behavior using Python and SQL
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Q2. Have you implemented any Android sdk in the projects
Ans. 
Yes, I have implemented Android SDK in multiple projects.
• I have used Android SDK to develop various features like push notifications, location services, and in-app purchases.

• I have also integrated third-party SDKs like Facebook and Google Maps SDKs in my projects.

• I am familiar with Android Studio and have used it extensively for Android app development.

• I have experience with different versions of Android SDK and have d
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Q3. What is the flow of push notifications
Ans. 
Push notifications are sent from a server to a client device to notify the user of new content or updates.
• The server sends a notification to the push notification service (e.g. Firebase Cloud Messaging)

• The push notification service sends the notification to the client device

• The client device receives the notification and displays it to the user
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Q1. What is the reason for change. How many people are their in your family.
Ans. 
The reason for change can vary based on individual circumstances. The number of people in my family is...
• Reasons for change can include personal growth, career advancement, or seeking new challenges.

• The number of people in my family is [insert number].

• Example: The reason for change in my previous job was the lack of growth opportunities.

• Example: There are 4 people in my family.
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It was done on hackerrank the first question was related to array and second was on linked list and last was on sql

Q1. Oops concept stack program SQL basics
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Q1. Normal question related to me and job
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Quant, logical reasoning, mathematics

Q1. Access modifiers
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Q2. Diff between abstract class and interface Difference between array and array list Difference between method overloading and overriding Pillars of oops Deadlock Normalisation
Ans. 
Abstract class is a class with abstract methods, interface is a contract with only abstract methods. Array is fixed size, ArrayList is dynamic. Method overloading is same method with different parameters, overriding is redefining a method. OOP pillars are inheritance, encapsulation, polymorphism, abstraction. Deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other...read more
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Easy applitute question with 1 coding question at the end

Q1. String builder vs string buffer
Ans. 
String builder is faster but not thread-safe, while string buffer is slower but thread-safe.
• String builder is recommended for single-threaded applications for better performance.

• String buffer is recommended for multi-threaded applications to ensure thread safety.

• Example: StringBuilder sb = new StringBuilder(); StringBuffer sbf = new StringBuffer();
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Q2. Final keyword in oops
Ans. 
The final keyword in OOP is used to restrict the user from changing the value of a variable, overriding a method, or inheriting from a class.
• Final variable: value cannot be changed once assigned

• Final method: cannot be overridden in child classes

• Final class: cannot be inherited by other classes
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Q3. Bsf graph explanation
Ans. 
BSF graph explanation
• BFS (Breadth-First Search) is a graph traversal algorithm that explores all the neighbor nodes at the present depth before moving on to the nodes at the next depth.

• It uses a queue data structure to keep track of the nodes to visit next.

• BFS is often used to find the shortest path in an unweighted graph.

• Example: BFS can be used to find the shortest path in a maze from the starting point to the exit.
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They asked some general Quantitative and logical questions and code snippets.

Q1. String Reverse and Two Sum
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Q2. Related to my projects and Tech Stacks
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Q1. This is the Second technical round. The interviewer asked about everything from my project.
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Q2. Asked some sql queries like joins and set operation
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Q1. Sql question, joins , store procedure
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Q2. Mvc question, mvc frame work
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