HCL Infosystems Performance Test Engineer Interview Questions and Answers

Q1. What are the HTTP responses explain
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Q2. Tell about correlations
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Q1. Load runner related
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Q2. What is correlation
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Correlation is a statistical measure that describes the relationship between two variables.
• Correlation can range from -1 to 1, with 1 indicating a perfect positive correlation, -1 indicating a perfect negative correlation, and 0 indicating no correlation.

• Correlation does not imply causation, meaning just because two variables are correlated does not mean that one causes the other.

• For example, if there is a positive cor...read more
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Q1. What is API testing
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API testing is a type of software testing that involves testing APIs directly to ensure they meet functionality, reliability, performance, and security requirements.
• API testing involves testing the functionality, reliability, performance, and security of APIs.

• It focuses on verifying that the API meets the requirements specified in its design.

• API testing can be done manually or using automated tools.

• Examples of API test
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Q1. What is thread group
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Thread group is a collection of threads that represent a group of virtual users in a performance test.
• Thread group defines the number of users and the ramp-up period for a performance test.

• Each thread in a thread group represents a virtual user that simulates real user behavior.

• Thread group allows for configuring the concurrency and distribution of virtual users during a test.

• Example: In JMeter, a Thread Group element ...read more
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Q1. What is aggregate report
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Aggregate report is a summary of performance test results showing key metrics like average response time, throughput, error rate, etc.
• Aggregate report provides a high-level summary of performance test results

• It includes metrics like average response time, throughput, error rate, and percentiles

• Helps in identifying performance bottlenecks and areas for improvement

• Commonly used in tools like JMeter to analyze performance
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Q1. What is view result tree
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View Result Tree is a listener in JMeter that displays the results of performance tests in a tree format.
• View Result Tree is used to view the response data, request and response headers, and other details of each sample in a performance test.

• It can be used to debug issues in the test script by analyzing the details of each request and response.

• View Result Tree can also be used to view and analyze the performance metric...read more
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Q1. Describe your experience
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Q2. What is correlation
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Correlation is a technique used in performance testing to capture and replay dynamic values in subsequent requests.
• Correlation is used to handle dynamic values like session IDs, timestamps, and tokens in performance test scripts.

• It involves extracting a value from a response and passing it on to a subsequent request.

• Correlation ensures that the test script accurately simulates real user behavior by maintaining session ...read more
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Q3. Settings to do in performance testing tool as neoload or load runner to record a script in sap
Ans. 
To record a script in SAP using performance testing tools like Neoload or LoadRunner, certain settings need to be configured.
• Configure the recording settings in the performance testing tool to record SAP transactions

• Ensure that the SAP client and server are properly configured for recording

• Set up the proxy settings in the performance testing tool to capture the SAP traffic

• Verify that the recording is capturing the desi
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Q4. How will you monitor in sap application
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Monitoring in SAP application involves using tools like SAP Solution Manager, SAP CCMS, and third-party monitoring tools.
• Use SAP Solution Manager to monitor system performance, availability, and configuration.

• Leverage SAP CCMS (Computer Center Management System) for real-time monitoring of SAP systems.

• Utilize third-party monitoring tools like Dynatrace, AppDynamics, or New Relic for end-to-end monitoring of SAP applica...read more
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They ask aptitude. We can clear this

No coding required pseudo codes were enough

Q1. Just personal questions
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Q2. Are you able to relocate
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Q3. Tell me about yourself
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Q4. Are you participated in any events in your college
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Q5. What are your hobbied
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Q1. What is performance testing
Ans. 
Performance testing is a type of testing to ensure software applications perform well under expected workload.
• Performance testing evaluates the speed, responsiveness, and stability of a system under a specific workload.

• It helps identify bottlenecks, assess scalability, and optimize performance.

• Examples include load testing, stress testing, and spike testing.
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Q1. How to prepare NFR Sheet?
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NFR sheet can be prepared by identifying the non-functional requirements and documenting them in a structured format.
• Identify the non-functional requirements such as performance, scalability, reliability, security, usability, etc.

• Document the requirements in a structured format such as a spreadsheet or a table.

• Include details such as the requirement description, acceptance criteria, priority, and any dependencies.

• Ensur...read more
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Q2. How to calculate pacing time?
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Pacing time is calculated by dividing the total number of transactions by the duration of the test.
• Pacing time is used to determine the rate at which virtual users should be generated during a performance test.

• It is calculated by dividing the total number of transactions by the duration of the test.

• For example, if the test is scheduled to run for 1 hour and the expected number of transactions is 10,000, the pacing time...read more
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Q3. Explain 3-tier architecture?
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3-tier architecture is a client-server architecture with three layers: presentation, application, and data storage.
• Presentation layer: User interface for interaction with the application

• Application layer: Business logic and processing of user requests

• Data storage layer: Storage and retrieval of data

• Each layer communicates with the layer above and below it

• Allows for scalability and separation of concerns

• Examples: Web ap
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Q4. What is difference between concurrent users and simultaneous users?
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Concurrent users and simultaneous users are often used interchangeably, but they have different meanings.
• Concurrent users refer to the number of users accessing the system at the same time.

• Simultaneous users refer to the number of users performing the same action at the same time.

• Concurrent users can perform different actions at the same time, while simultaneous users perform the same action.

• For example, if 100 users a...read more
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Q5. How many types of graphs? Explain?
Ans. 
There are several types of graphs, including line, bar, pie, scatter, and area graphs.
• Line graphs show trends over time.

• Bar graphs compare data between different categories.

• Pie graphs show proportions of a whole.

• Scatter graphs show the relationship between two variables.

• Area graphs show the cumulative totals over time.
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Q6. What is IP Spoofing?
Ans. 
IP Spoofing is a technique used to impersonate another device by changing the source IP address of a packet.
• IP Spoofing is commonly used in DDoS attacks to hide the attacker's identity.

• It can also be used to bypass access controls by impersonating a trusted device.

• IP Spoofing can be prevented by using firewalls and network intrusion detection systems.
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Q7. What is Rendezvous point?
Ans. 
Rendezvous point is a synchronization point in load testing where multiple virtual users wait for each other before proceeding.
• Used in load testing to simulate real-world scenarios

• Ensures that all virtual users reach a certain point before continuing

• Helps in measuring the response time of the system under load

• Can be used to test scenarios like online auctions, where multiple users bid at the same time
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Q1. Just salary and joining date related questions
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Q1. What are the HTTP responses explain
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Q2. Tell about correlations
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