CitiusTech Performance Tester Interview Questions and Answers

Q1. Core java in depth
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Q2. Javascript in depth
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Javascript is a versatile programming language commonly used for web development.
• Javascript is a high-level, interpreted programming language.

• It is used for adding interactivity to websites, creating web applications, and building server-side applications.

• Javascript can manipulate the DOM, handle events, and make asynchronous requests using AJAX.

• It supports object-oriented, functional, and imperative programming styles...read more
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Q1. What is callback in Javascript?
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A callback in JavaScript is a function passed as an argument to another function, to be executed later.
• Callback functions are commonly used in asynchronous programming.

• They allow for functions to be executed after another function has finished executing.

• Example: setTimeout function in JavaScript takes a callback function as an argument to be executed after a specified time.
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Frontend application architecture

Q1. Questions on JAva-> String, collections,
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Q2. Qestions on Selenium -> Diff b/w hook and background?
Ans. 
Hook and background are two different concepts in Selenium.
• A hook is a piece of code that runs before or after a scenario in a test.

• Background is a step that runs before each scenario in a feature file.

• Hooks are used to set up or tear down the test environment.

• Background is used to set up the initial state of the scenario.

• Hooks can be defined at different levels - global, feature, scenario, or step level.

• Background is
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Asked to find elements, given a testing sceanrio for writing code.

Q1. Salary discussion, Location clarification
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Q1. Spring boot scenario. Write controller and rest of the required classes
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Create a Spring Boot controller and required classes for a scenario
• Create a controller class with @RestController annotation

• Define request mapping for different endpoints using @RequestMapping or @GetMapping/@PostMapping annotations

• Implement methods to handle different HTTP requests and return appropriate responses

• Use @Autowired annotation to inject dependencies like services or repositories

• Create service classes to ha...read more
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Q2. Java 8 , stream apis
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Q1. What is velocity
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Velocity is the rate of change of an object's position with respect to a frame of reference, typically measured in meters per second.
• Velocity is a vector quantity, meaning it has both magnitude and direction.

• It is calculated as the displacement of an object divided by the time taken to cover that displacement.

• For example, if a car travels 100 meters in 10 seconds, its velocity is 10 m/s in the direction of travel.
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Q2. What is test bed
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A test bed is a platform or environment used to conduct testing of software or hardware.
• Test bed is a controlled environment where tests can be conducted.

• It may include hardware, software, network configurations, and other necessary components.

• Test beds are used to simulate real-world scenarios for testing purposes.

• Examples of test beds include virtual machines, physical devices, and cloud-based testing platforms.
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I was tasked with creating a Spring Boot microservice.

Q1. .Net core and Azure
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Q2. Scenario based questions
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Pattern program, array segregation prograk

Q1. Selenium wait, oops concept
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Q2. Collection in java
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Collection in Java is a framework that provides an architecture to store and manipulate a group of objects.
• Collections are used to store, retrieve, manipulate, and communicate aggregate data.

• Common collection types include List, Set, Map, and Queue.

• Example: List<String> names = new ArrayList<>(); names.add("Alice"); names.add("Bob");

• Example: Set<Integer> numbers = new HashSet<>(); numbers.add(1)
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Q3. TestNg question
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Q1. Salary discussion
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