Cornerstone OnDemand Lead Software Engineer Interview Questions and Answers

Java internals, coding questions 2sum

Q1. Hld of your previous project
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Used React.js for front-end development

• Implemented RESTful APIs for backend using Node.js and Express

• Utilized MongoDB for database storage

• Incorporated authentication and authorization features for user security
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Q2. Question related to self build projects
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Q1. Salary negotiation
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Q2. Location constrain if any
Ans. 
Open to relocation for the right opportunity
• Willing to relocate for the right job opportunity

• Flexible with location for the right role

• Open to considering different locations for the right position
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Q1. Explain the technology stack you have been working on.
Ans. 
I have been working on a technology stack that includes Java, Spring Boot, Angular, and MySQL.
• Java programming language for backend development

• Spring Boot framework for building and deploying Java applications

• Angular framework for frontend development

• MySQL database for data storage and retrieval
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Q2. Deep dive into the .Net framework and its use in developing microservices using Web APIs
Ans. 
The .Net framework is a powerful tool for developing microservices using Web APIs.
• The .Net framework provides a set of libraries and tools for building scalable and reliable microservices.

• Web APIs in .Net allow for easy communication between different services and clients.

• Features like dependency injection and middleware in .Net make it easier to develop and maintain microservices.

• Examples of popular frameworks for bui...read more
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Q1. Explain how you would troubleshoot a network bottleneck in your web API application hosted in a public cloud like Azure or AWS.
Ans. 
To troubleshoot a network bottleneck in a web API application hosted in a public cloud like Azure or AWS, one can analyze network traffic, monitor server performance, and optimize resource allocation.
• Use network monitoring tools to analyze traffic patterns and identify potential bottlenecks.

• Monitor server performance metrics such as CPU usage, memory usage, and disk I/O to pinpoint any resource constraints.

• Optimize res...read more
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Q2. Explain the usage of Azure service fabric clusters
Ans. 
Azure Service Fabric clusters are used to deploy and manage microservices-based applications on Microsoft Azure.
• Azure Service Fabric clusters provide a platform for deploying and managing scalable and reliable microservices.

• They offer automatic scaling, rolling upgrades, and health monitoring for microservices.

• Service Fabric clusters can be used to deploy stateless or stateful microservices.

• They support multiple progra...read more
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There will be 3 coding questions given to us for solving,we need solve two questions compulsory.

Q1. Introduce yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills
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Q2. Questions related to frontend
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Q1. Java,oop, microservice, JPA
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Q2. Spring boot , MySQL
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Q1. Java, spring boot
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Q2. Microservice, rest api
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Q1. Tell me about your self
Ans. 
I am a passionate software developer with 5 years of experience in building web applications using various technologies.
• 5 years of experience in software development

• Proficient in building web applications

• Skilled in using various technologies
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Q2. Resume discussion
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It was a 90minutes coding test where there was 2 coding question and 10 mcq each coding question carried 33% marks and even the 10mcq was 33% marks

Q1. Like it was full based on resume like on my resume i had put two web projects so most of the question was from web development and the aws cloud it took a lot of time and at last they asked the coding ques...read more
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Q1. Hr was easy just asked to introduce about myself and tell any one preffered project
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Q1. Threading: Write and use a mutex?
Ans. 
A mutex is a synchronization primitive that ensures only one thread can access a resource at a time.
• Create a mutex object using the appropriate library or language-specific function.

• Lock the mutex before accessing the shared resource to prevent other threads from accessing it.

• Unlock the mutex after finishing the operation on the shared resource to allow other threads to access it.

• Example: pthread_mutex_t mutex; pthread...read more
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Q2. Find the memory leak in a given set of code.
Ans. 
Identify memory leak in code
• Check for any dynamically allocated memory that is not being freed

• Look for any infinite loops or recursive functions that consume memory

• Use memory profiling tools like Valgrind to detect leaks

• Check for any global variables that are not properly managed
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Q1. Comparison between REST and SOAP
Ans. 
REST is lightweight and flexible, while SOAP is more structured and standardized.
• REST uses HTTP methods for communication, while SOAP uses XML messaging.

• REST is better suited for mobile and web applications, while SOAP is better for enterprise-level applications.

• REST is stateless, while SOAP can maintain state between requests.

• REST is easier to implement and understand, while SOAP has a steep learning curve.

• REST is mor
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Q2. Java Fibonnaci series using recursion, questions on complexity
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