TCS Itsm Lead Interview Questions and Answers

Q1. Remove duplicates in an array
Ans. 
Use a hash set to remove duplicates in an array of strings
• Create a hash set to store unique elements

• Iterate through the array and add each element to the hash set

• Convert the hash set back to an array to get the unique elements
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Q2. What is react virtual DOM
Ans. 
React virtual DOM is a lightweight copy of the actual DOM, used for efficient updates and rendering in React applications.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• React uses virtual DOM to efficiently update and render components without directly manipulating the actual DOM.

• When changes are made to the virtual DOM, React calculates the most efficient way to update the act...read more
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Q3. React hooks with example
Ans. 
React hooks are functions that let you use state and other React features without writing a class.
• React hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• useState() is a hook that allows you to add state to functional components.

• useEffect() is a hook that allows you to perform side effects in functional components.

• useContext() is a hook that allows you to use the con...read more
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Q1. Questions on core java concepts
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Q2. Questions on SQL and Springboot
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Q1. Questions on Collection framework.
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Q2. Questions on Springboot and core java
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Q1. Scenario based question
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Q2. Stream API questions
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Q1. INterview was based on COre Java and J2EE.
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Q1. Questions based on J2EE and Core Java
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Q1. Complete check on Project deliverables
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Q1. Scenario based questions
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Q1. What is your strength and weakness
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Q2. Tell me about your self
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Q3. What is your ctc
Ans. 
My current CTC is $80,000 per year.
• My current CTC is $80,000 per year

• I am open to discussing salary expectations during the interview process

• I have experience negotiating salary packages in previous roles
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Q4. Wlakthrough me your cv
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Q5. Where do you find your self in company after 5 years
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Very detailed as they take an aptitude oral interview which you have to clear before they reach technical round.

Q1. Very easy don't worry about anything they will ask easy questions
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Q2. What is the name of the father of civil engineering
Ans. 
The father of civil engineering is John Smeaton.
• John Smeaton was a British civil engineer who is considered the father of civil engineering.

• He was the first person to call himself a civil engineer and is known for his work on the Eddystone Lighthouse.

• Smeaton's work laid the foundation for modern civil engineering practices.

• He also designed bridges, canals, and harbors, and was a founding member of the Society of Civil
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Q1. About current work experience
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Q2. Education background and details
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Q1. Process related questions
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Q2. Work experience related questions
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Q1. Few questions are same like before
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Q2. Scenario based questions
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Q3. Team handling and management related questions
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Q1. Few scenario based questions in Loadrunner Html and Url mode difference Correlation explain LR functions Recording options Pacing and think time 90 and 95th percentile explain Ordinal value explain in cor...read more
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Q2. Generic questions in Performance testing like: End to end performance testing life cycle Challenges in scripting or recording or execution Performance bottlenecks Issues faced in my project and what was th...read more
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Q3. Few basic questions in Jmeter Execution order of jmeter elements What all listeners used Assertions used Beanshell processor or sampler How do we analyse results in jmeter Disadvantages of jmeter Which 1 ...read more
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Q1. Challenges in performance testing
Ans. 
Performance testing challenges include identifying bottlenecks, simulating real-world scenarios, and analyzing results.
• Identifying bottlenecks in the system

• Simulating real-world scenarios to accurately test performance

• Analyzing results to identify areas for improvement

• Ensuring test environment is representative of production environment

• Managing test data and test scripts

• Dealing with network latency and other external f...read more
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Q2. Monitoring tools and what metrics we capture during or after testing
Ans. 
Monitoring tools and metrics for testing
• We use tools like Nagios, Zabbix, and Prometheus for monitoring

• Metrics captured include response time, error rate, CPU usage, memory usage, and network traffic

• We also capture user behavior metrics like click-through rate and conversion rate

• Monitoring helps us identify issues and optimize performance
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Q3. Performance Bottlenecks
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Q4. My roles and responsibilities in previous company as a performance tester
Ans. 
As a performance tester in my previous company, my roles and responsibilities included analyzing system performance, designing and executing performance tests, identifying bottlenecks, and providing recommendations for improvement.
• Analyzed system performance to identify areas of improvement

• Designed and executed performance tests to measure system response time and scalability

• Identified bottlenecks and performance issue...read more
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Q5. Few basic questions about Jenkins, New Relic as I had knowledge on those tools
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