HCLTech Senior Lead Interview Questions and Answers

Q1. Azure cloud platform tech
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Q2. Informatica tech stack ques
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Q1. Adf tech stack que
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Q2. Scd type 2 implementation
Ans. 
SCD Type 2 implementation involves tracking historical changes in data by creating new records for each change.
• Identify the columns that need to be tracked for changes

• Add effective start and end dates to track the validity of each record

• Insert new records for changes and update end dates for previous records

• Maintain a surrogate key to uniquely identify each version of the record
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Q1. Dw related que ans
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Q2. Solution design related que
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Q1. Aspiration from my end
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Q2. How soon can join
Ans. 
I can join the team within 2 weeks.
• I can start within 2 weeks of receiving the offer.

• I need to give notice to my current employer.

• I may need to relocate, which could affect my start date.
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Q1. What is the architecture of the Java Virtual Machine (JVM)?
Ans. 
The Java Virtual Machine (JVM) is an abstract computing machine that enables a computer to run Java programs.
• JVM is platform-independent and converts Java bytecode into machine code.

• It consists of class loader, runtime data areas, execution engine, and native method interface.

• JVM memory is divided into method area, heap, stack, and PC register.

• Examples of JVM implementations include Oracle HotSpot, OpenJ9, and GraalVM.
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Q2. What is the default connection pooling in Spring Boot, and how can it be customized?
Ans. 
The default connection pooling in Spring Boot is HikariCP, which can be customized through properties in the application.properties file.
• HikariCP is the default connection pooling library in Spring Boot, known for its high performance and low overhead.

• To customize the connection pooling, you can modify properties like 'spring.datasource.hikari.*' in the application.properties file.

• For example, you can set maximum pool ...read more
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Q3. What are the best practices for optimizing a Spring Boot application?
Ans. 
Best practices for optimizing a Spring Boot application
• Use Spring Boot Actuator to monitor and manage application performance

• Implement caching mechanisms like Spring Cache to reduce database calls

• Optimize database queries and indexes for better performance

• Use asynchronous processing with Spring's @Async annotation for non-blocking operations

• Profile and analyze application performance using tools like VisualVM or JProfi
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Q4. What is a heap dump, and how can it be used to identify memory leaks?
Ans. 
A heap dump is a snapshot of the memory usage of a Java application at a specific point in time.
• Heap dumps can be generated using tools like jmap or VisualVM.

• They provide detailed information about objects in memory, their sizes, and references.

• Analyzing a heap dump can help identify memory leaks by pinpointing objects that are consuming excessive memory.

• Common signs of memory leaks in a heap dump include a large numbe...read more
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Q5. How can you diagonally iterate through and print the elements of a 2D array?program
Ans. 
Diagonally iterate through and print elements of a 2D array of strings.
• Use nested loops to iterate through rows and columns of the 2D array.

• Calculate the diagonal elements by incrementing row and column indices together.

• Print the elements as you iterate through the diagonal of the array.
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Q1. Can you tell me about yourself?
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Q2. What is the process for conducting capacity planning?
Ans. 
Capacity planning involves forecasting future resource needs and ensuring that the necessary resources are available.
• Identify current resource usage and performance levels

• Forecast future resource needs based on growth projections

• Determine any potential bottlenecks or constraints

• Allocate resources accordingly to meet future demands

• Regularly review and adjust the capacity plan as needed
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Q3. What is the process for creating a Standard Operating Procedure (SOP)?
Ans. 
Creating a Standard Operating Procedure involves identifying the process, documenting steps, obtaining feedback, and finalizing the SOP.
• Identify the process or task that needs an SOP

• Document each step involved in the process

• Obtain feedback from relevant stakeholders for improvements

• Finalize the SOP with clear instructions and guidelines

• Regularly review and update the SOP as needed
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Q4. How do you handle transitions?
Ans. 
I handle transitions by communicating effectively, setting clear expectations, and providing support to team members.
• Communicate openly and transparently with team members about upcoming changes

• Set clear expectations and goals for the transition period

• Provide support and resources to help team members adjust to the changes

• Lead by example and remain positive and adaptable during transitions
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Q5. How do you provide feedback?
Ans. 
I provide feedback by being specific, timely, and constructive.
• Be specific about what was done well and what needs improvement

• Provide feedback in a timely manner to address issues promptly

• Offer constructive criticism and suggestions for improvement

• Encourage open communication and dialogue for feedback to be effective
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Q6. Can you describe a situation in which you had to handle an escalation call from a customer, and how you managed it?
Ans. 
Handled an escalation call by actively listening, empathizing, and offering a solution.
• Remain calm and composed while listening to the customer's concerns.

• Empathize with the customer and acknowledge their frustration.

• Offer a solution or escalate the issue to a higher authority if necessary.

• Follow up with the customer to ensure their issue has been resolved satisfactorily.
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Q7. Can you describe a situation in which you encountered a conflict between two team members and explain how you managed that situation?
Ans. 
Managed conflict between team members by facilitating open communication and finding common ground.
• Addressed the issue privately to understand each team member's perspective

• Encouraged open communication and active listening to resolve misunderstandings

• Facilitated a team meeting to discuss the conflict and find common ground

• Established clear expectations and guidelines for future interactions
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Q8. What Key Performance Indicators (KPIs) have you worked with?
Ans. 
I have worked with KPIs such as sales targets, customer satisfaction scores, employee productivity metrics, and project completion rates.
• Sales targets

• Customer satisfaction scores

• Employee productivity metrics

• Project completion rates
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Q9. How did you establish end-to-end operations when setting up a new process?
Ans. 
I established end-to-end operations by defining clear processes, assigning roles, providing training, and monitoring performance.
• Defined clear processes from start to finish

• Assigned roles and responsibilities to team members

• Provided training and resources to ensure understanding and proficiency

• Monitored performance and made adjustments as needed
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Q1. Basic ServiceNow questions like business rules, script include, ui policies etc
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Q2. Scenario based question like, what should be the approach if you need have a common drop-down field across multiple catalog items with dynamic options.
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Q3. Live coding like, write a code to print an user and the hierarchy of their managers
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Q1. Basic portal questions, like how to update a widget without reloading the screen, how to pass data between client script and server script in widget.
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Q2. Questions around Virtual Agent like, How will you build a topic where the bot's response changes based on user's input. Which tables store the conversation between user and bot
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Q3. Basic HRSD questions as well.
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Q1. Technical questions on Mainframes and TOSCA
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Q1. Client round with technical questions on mainframes and tosca
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Q1. Till date they have not enrolled me even after confirming and doing my documentation
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Q1. Documentation round which is still going on and its been 2 months
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Q1. Diff bw CCW and DIS CCW
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Q2. Diff bw PECI and PICOF
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Q1. Previous experience
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Q2. Role in current project in details
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Program for duplicate removal and sorting

Q1. Technical in detail
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Q1. Qualification and experience
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Q2. About my previous organization
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Q1. Was on team leader
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