ISTROX Research Interview Questions and Answers

Q1. Core Java questions and multithreading basics like executor service
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Q2. Spring boot error handling, simple questions on distributed systems
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Q3. Coding question. Requested to do in O(n ) time complexity as oppsed to O(n2) suggested by me.
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Q1. Given an array find all the numbers whose sum is 11 using streams only
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Q2. Spring boot basics, hibernate queries, what is native query
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Q1. Design patterns in Java, write a singleton class
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Q2. Spring IOC and AOP
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A case study in an Optum interview typically revolves around solving a real-world problem related to healthcare, data analysis, technology, or business strategy, given Optum’s focus on healthcare services and technology solutions. Here are some tips on how to approach a case study interview at Optum and a sample example:

Steps to Approach an Optum Case Study:

1. Understand the Problem Statement:

Take time to read the case study carefully and make sure you understand the key issue or question.

Identify the stakeholders involved (patients, healthcare providers, insurance companies, etc.) and the objective (cost reduction, improving patient outcomes, increasing efficiency, etc.).



2. Clarify Assumptions:

If there are any ambiguous elements, ask questions to clarify the problem.

You can also state your assumptions if you're making any, but be clear that these are assumptions.



3. Break Down the Problem:

Identify key data points you would need to analyze.

Break the problem into smaller pieces that can be addressed step-by-step.



4. Analyze:

Use frameworks like SWOT analysis, PESTLE analysis, or Porter’s Five Forces if applicable to the case.

In case of a data-related problem, try to identify key metrics (such as patient satisfaction, cost, quality of care, etc.) and how they can be improved or measured.

For technology-related cases, consider aspects like scalability, security, user experience, and integration with existing systems.



5. Propose a Solution:

Present your findings logically and suggest a solution based on your analysis.

Make sure to consider both short-term and long-term impacts on patient

Q1. When interviewing with Optum, you can expect a mix of technical, behavioral, and situational questions, especially considering their focus on healthcare services, technology, and data analysis. Here are so...read more
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Q2. Done
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Computer typing should be 40 wpm. And optional question answer multiple choice questions

Q1. How many variance in sap?
Ans. 
The number of variances in SAP can vary depending on the specific processes and transactions being analyzed.
• The number of variances in SAP can be influenced by factors such as data entry errors, system glitches, or discrepancies in invoice processing.

• Variances in SAP may be identified through reconciliation processes, exception reports, or manual reviews of accounts payable transactions.

• Examples of variances in SAP inc...read more
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Q2. We cac explain the all accounts receivable and accounts payable
Ans. 
Accounts receivable and accounts payable are two important aspects of a company's financial operations.
• Accounts receivable refers to money owed to a company by its customers for goods or services provided.

• Accounts payable refers to money owed by a company to its suppliers or vendors for goods or services received.

• Accounts receivable is an asset on the balance sheet, while accounts payable is a liability.

• Managing accoun...read more
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Q3. What is the cost element and cost center?
Ans. 
Cost element and cost center are key concepts in accounting for tracking and allocating costs within an organization.
• Cost element refers to the specific types of costs incurred by an organization, such as materials, labor, or overhead.

• Cost center is a specific department, team, or function within an organization that is responsible for incurring costs.

• Cost elements are assigned to cost centers to track and allocate cos...read more
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Q4. How many we have currencies in sap?
Ans. 
SAP supports over 160 currencies worldwide.
• SAP supports over 160 currencies for global transactions.

• Currencies can be configured in SAP using transaction code OB22.

• Each currency is assigned a unique currency code (e.g. USD for US Dollar, EUR for Euro).
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Q5. How many types of projects
Ans. 
There are various types of projects, including internal projects, external projects, research projects, and development projects.
• Internal projects focus on improving processes within the organization.

• External projects involve working with external partners or clients.

• Research projects aim to gather data and analyze findings.

• Development projects focus on creating new products or services.

• Examples: IT system implementati...read more
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Q1. Manage large chunk of Data in sfmc
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Q2. Server side java script
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Q1. Amp script related scenarios
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Q2. Sql based conditions and scenario
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Q1. What special attributes do you possess that make you a perfect fit for this role, considering that many individuals can perform car service?
Ans. 
I possess excellent communication skills, problem-solving abilities, and a strong customer-centric approach.
• Strong communication skills to effectively interact with customers and address their concerns

• Proven problem-solving abilities to quickly resolve issues and provide satisfactory solutions

• Customer-centric approach to prioritize customer satisfaction and build positive relationships

• Ability to remain calm and compose...read more
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Q2. What skills do you possess that are relevant to the execution of this role?
Ans. 
I possess strong communication skills, problem-solving abilities, and a customer-centric approach.
• Excellent communication skills to effectively interact with customers and address their concerns

• Strong problem-solving abilities to quickly resolve issues and provide solutions

• Customer-centric approach to ensure customer satisfaction and retention

• Ability to remain calm and patient in challenging situations

• Experience in han...read more
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Q3. What attracted you to choose this company as your new employer?
Ans. 
The company's strong reputation for excellent customer service and commitment to employee development attracted me.
• Reputation for excellent customer service

• Commitment to employee development

• Positive reviews from current and former employees
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Q4. What's your salary expectations
Ans. 
My salary expectations are in line with industry standards and based on my experience and qualifications.
• Research industry standards for the position

• Consider my experience and qualifications

• Be prepared to negotiate based on job responsibilities and benefits package
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Q1. Do you have experience
Ans. 
Yes, I have 3 years of experience in customer service roles.
• Worked as a customer service representative for 2 years at Company X

• Handled customer inquiries, resolved complaints, and processed orders

• Trained new employees on customer service best practices
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Q2. Are you dedicated to this role
Ans. 
Yes, I am dedicated to this role and committed to providing excellent customer service.
• I have a strong work ethic and always strive to exceed customer expectations

• I am willing to go above and beyond to resolve customer issues and ensure their satisfaction

• I am constantly seeking ways to improve my skills and knowledge in order to better serve customers
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Integrity and honesty

Q1. What improvements to interfaces were introduced in Java 8 that were missing in Java 7, specifically regarding static and default methods?
Ans. 
Java 8 introduced static and default methods in interfaces, allowing for method implementation and code reusability.
• Java 8 introduced static methods in interfaces, allowing for method implementation directly in the interface itself.

• Default methods were also introduced in Java 8, enabling interfaces to have method implementations without affecting implementing classes.

• Static methods in interfaces can be called using the...read more
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Q2. Explain internal working of HashMap ? How to synchronize it ?
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• To synchronize a HashMap, you can use the synchronizedMap() m...read more
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Q3. Given a list of employees with their ratings, how can you sort the employees based on their ratings using the Java 8 Streaming API?
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Q4. Will the program compile if the parent class throws a runtime exception while the child class throws an arithmetic exception?
Ans. 
No, the program will not compile if the parent class throws a runtime exception while the child class throws an arithmetic exception.
• In Java, if a parent class method throws a checked exception, the child class method can only throw the same exception or its subclasses.

• ArithmeticException is an unchecked exception, so if the parent class throws a checked exception and the child class throws an unchecked exception, the ...read more
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Q5. In a Spring Boot application with two databases, how can you configure JDBC to specify which database to use?
Ans. 
Configure JDBC in Spring Boot to specify which database to use
• Define multiple DataSource beans in the configuration class

• Use @Primary annotation to specify the primary DataSource

• Use @Qualifier annotation to specify the secondary DataSource

• Inject the DataSource beans where needed in the application
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Q6. How to use a jetty server in your spring boot application ?
Ans. 
To use a Jetty server in a Spring Boot application, you can configure it as a dependency and customize its settings.
• Add Jetty server dependency in your pom.xml file

• Exclude Tomcat server dependency if it's included by default in Spring Boot

• Configure Jetty server settings in application.properties or application.yml file

• Example: Add Jetty dependency - <dependency> <groupId>org.springframework.boot</groupId...read more
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Q7. Difference between @RequestParam and @PathVariable ?
Ans. 
RequestParam is used to extract query parameters from the URL, while PathVariable is used to extract values from the URI path.
• RequestParam is used for query parameters in the URL, while PathVariable is used for values in the URI path.

• RequestParam is optional, while PathVariable is required.

• RequestParam is used with the @RequestParam annotation, while PathVariable is used with the @PathVariable annotation.

• Example: @Requ...read more
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Q8. How would you handle a scenario where one microservice is awaiting a response from another microservice that is taking an extended time to respond?
Ans. 
I would implement timeout mechanisms and retries to handle the scenario of one microservice awaiting a response from another microservice taking an extended time.
• Implement timeout mechanisms in the calling microservice to limit the waiting time for a response.

• Set up retry logic to automatically resend the request to the slow microservice if no response is received within the specified timeout period.

• Use circuit breaker...read more
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Basic quant and reasoning questions
Selenium MCQ
Java programs with MCQ

Q1. Tell me about yourself
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Q2. Where you initialise driver
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Q3. Driver is static or non static
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Q4. Difference between static and non static
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Q5. Disadvantages of static and non static
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Q6. Parallel execution in TestNG
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Q7. Write the code for Parallel testing in TestNG
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Q8. Difference between parallel methods and parallel tests
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Q9. Upload file using rest assured
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Q10. Postman basic questions
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Q11. Parameter for post method in postman
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Q12. BDD Framework cucumber
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Q13. Cucumber execution process
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Q14. How cucumber know step defination file placed
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Q15. Parameters used in cucumber
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Q16. Datatable in cucumber
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Q17. Have u created the testplan document when porject was started
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Q18. Testing cycle when project was on initial level
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Q19. Risk management and risk based testing
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Q20. Which estimate technique you follow , if fibonacci then why it is in 1 2 3 5 8 13 ?? Not in 12345678
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Q21. What is testing matrix and automation ROI
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Q22. Cicd tool
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Q23. Handle team ?
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Q1. What is your with career ?
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Q2. What is your graduation background.
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Q1. Motivation and career goals
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Q2. Why are you intrestedin this position ?
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Q1. What motivation ypu tp perfrom well at work ?
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Q2. What are your biggest weaknesses.
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Q1. Work ethic and adaptabllity.
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Q2. How do you handle pressure and deadlines ?
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Q1. Why did you choose this career
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Q2. What are your greatest strenth
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Q1. What is your graduation background
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Q2. What is your collage name
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Q1. How do you plan to overcome your weakness
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Q2. Why are you intrested in this position
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Work done from all assigments

Process planning refers to the methodical approach of determining the best possible way to manufacture a product or deliver a service by considering various aspects such as resources, timelines, and methodologies involved in production or execution.

Q1. Explain about previous process
Ans. 
Implemented a new chemical process to increase efficiency and reduce waste.
• Researched and analyzed current process to identify areas for improvement

• Designed and tested new process using simulation software

• Collaborated with production team to implement changes and monitor results

• Achieved 20% increase in production output and 15% reduction in waste

• Continuously monitored and optimized process for further improvements
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Q2. Explain about my work experience
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Q3. Explain about my work standard
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Q4. Explain about my managing method
Ans. 
I utilize a combination of project management tools and communication strategies to effectively manage my team and projects.
• I prioritize tasks based on deadlines and importance

• I regularly communicate with team members to ensure everyone is on the same page

• I use project management software such as Trello or Asana to track progress and assign tasks

• I adapt my management style to fit the needs and preferences of individual
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Q5. Explain about my working style
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