42Gears Mobility Systems Senior Software Engineer Interview Questions and Answers

Q1. How google.com works
Ans. 
Google.com is a search engine that uses web crawlers to index websites and algorithms to rank search results.
• Google uses web crawlers to index websites and store information in its database.

• Algorithms are used to rank search results based on relevance and popularity.

• Google also uses personalized search results based on user data and location.

• Google's homepage is simple and fast-loading to provide a user-friendly experi
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Q2. How rest works, in array of 500 elements give top 15 elements discussion about complexities
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Q1. What is content security Policy
Ans. 
Content Security Policy (CSP) is a security standard that helps prevent cross-site scripting (XSS) attacks by allowing website owners to control which resources can be loaded on their site.
• CSP is implemented using an HTTP header that specifies approved sources of content such as scripts, stylesheets, images, fonts, and more.

• It helps protect against XSS attacks by restricting the sources from which certain types of cont...read more
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Q2. React question to have directory sturcture listing
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Q1. How to identify if a queue is circular
Ans. 
A circular queue can be identified by checking if the rear pointer is one position behind the front pointer.
• Check if rear pointer is one position behind front pointer

• Check if front pointer is at index 0 and rear pointer is at index n-1 in an array of size n

• Check if front pointer is at index rear+1 modulo n in an array of size n
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Q1. Design notification system
Ans. 
Design a notification system for a software application.
• Identify the types of notifications needed (e.g. email, SMS, in-app)

• Consider the frequency and urgency of notifications

• Implement a notification queue to handle multiple notifications

• Include user preferences for notification settings

• Utilize push notifications for real-time updates
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Write multiple polyfills for array

Hacker rank test. Basic coding questions on arrays, list etc.

Q1. Interactive session. Theoritical questions on oops, multithreading, springboot, java8 and few coding questions.
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Q1. Design round. Questions on system design and best practices to be followed while developing any service. Few managerial questions as well.
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Q1. Profile related questions and salary discussion.
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Q1. About company values
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Q1. UML class diagram
Ans. 
UML class diagram is a visual representation of classes, attributes, methods, and relationships in a system.
• Classes are represented as boxes with three compartments for class name, attributes, and methods.

• Attributes are listed in the second compartment with their data types.

• Methods are listed in the third compartment with their parameters and return types.

• Relationships between classes are shown using lines with arrows ...read more
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Competency based questions

Q1. 1. Pattern print code. 2. Types of S3 bucket in AWS. 3. Java basic question. 4. Spring/ Spring boot basic question. 5. Hibernate basic interview question. 6. Some behavioral question.
Ans. 
This is a list of questions asked in an interview for Senior Software Engineer position.
• 1. Pattern print code: Write a code to print a specific pattern using loops.

• 2. Types of S3 bucket in AWS: Explain the different types of S3 buckets in Amazon Web Services.

• 3. Java basic question: Provide a basic question related to Java programming language.

• 4. Spring/Spring Boot basic question: Give an example of a basic question rel...read more
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Q1. Why want to change company
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Q2. For Latest Technical work
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Q1. Basics .net , c#, sql
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Q1. Current Project Details, Roles and some technical questions too
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Q1. Package Discussion and Other basic details
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Good technical round, you can manage, mainly Java questions used to come

Q1. HR round is also good package discussion will happen
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Q2. Company personal so kept secret
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