PayU Payments Interview Questions, Process, and Tips

Moderate coding which will be easy if you are a computer science student

Q1. Tell me about yourself
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Q2. What is your favourite subject
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Q1. Take me through your CV
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Q2. Do you have experience in FinTech or the banking sector?
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Q1. What experience do you have in SEO and Performance Marketing?
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Give a performance marketing plan for entering a new market.

Q1. What is rnn and lstm
Ans. 
RNN stands for Recurrent Neural Network and LSTM stands for Long Short-Term Memory. They are types of neural networks used for sequential data processing.
• RNN is a type of neural network that can process sequential data by maintaining a memory of past inputs.

• LSTM is a type of RNN that can handle the vanishing gradient problem and can remember long-term dependencies.

• LSTM has gates that control the flow of information int...read more
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Q2. What is precision and recall
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Precision and recall are two important metrics used to evaluate the performance of a classification model.
• Precision measures the proportion of true positives among all the predicted positives.

• Recall measures the proportion of true positives among all the actual positives.

• Precision and recall are inversely related and a trade-off exists between them.

• A high precision means that the model is good at predicting positive ca...read more
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Q3. What is regularisation
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Regularisation is a technique used in machine learning to prevent overfitting by adding a penalty term to the loss function.
• Regularisation helps to control the complexity of a model and reduce the impact of irrelevant features.

• It adds a penalty term to the loss function, which encourages the model to have smaller weights.

• There are different types of regularisation techniques such as L1 (Lasso) and L2 (Ridge) regularisa...read more
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MCQ+2 Coding questions

Q1. LCA in binary tree
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LCA in binary tree refers to finding the lowest common ancestor of two nodes in a binary tree.
• Start from the root and traverse down the tree to find the paths to the two nodes

• Compare the paths to find the last common node between them, which is the LCA

• If one of the nodes is the ancestor of the other, return that node as the LCA
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Round duration - 30 minutes
Round difficulty - Easy

Q1. What is the difference between manual testing and automated testing?
Ans. 
Manual testing is done by humans, while automated testing is done using tools and scripts.
• Manual testing involves testers executing test cases manually without the use of automation tools.

• Automated testing involves using tools and scripts to execute test cases automatically.

• Manual testing is time-consuming and prone to human error, while automated testing is faster and more reliable.

• Manual testing is suitable for explo...read more
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Q2. What is cross-browser testing?
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Cross-browser testing is the process of testing a website or web application across different web browsers to ensure consistent functionality and appearance.
• Ensures compatibility with various browsers such as Chrome, Firefox, Safari, and Internet Explorer

• Identifies and fixes any issues related to browser-specific behaviors

• Helps in delivering a seamless user experience across different platforms

• Uses tools like Selenium,...read more
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Q3. What are the different parts of a test automation framework?
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A test automation framework consists of different parts like libraries, tools, and guidelines to support automated testing.
• Libraries: reusable code modules for common functions like data manipulation, assertions, and interactions with the application under test

• Tools: software programs used to create, execute, and manage automated tests, such as Selenium, Appium, or JUnit

• Guidelines: best practices and standards for writ...read more
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Round duration - 30 minutes
Round difficulty - Easy

Q1. What is meant by a locator in Selenium, and can you name a few different types of locators available in Selenium?
Ans. 
A locator in Selenium is used to identify web elements on a web page. There are different types of locators like ID, class name, xpath, etc.
• Locators are used to find and interact with web elements on a web page

• Some common types of locators in Selenium are ID, class name, xpath, CSS selector, name, tag name, link text, and partial link text

• Each locator type has its own syntax and usage, for example, ID locator uses 'id=
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Q2. What is an XPath?
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XPath is a query language used to navigate through XML documents and locate elements based on their attributes or structure.
• XPath stands for XML Path Language.

• It is used to select nodes or elements in an XML document.

• XPath uses path expressions to navigate through the document tree.

• Examples: //div[@class='example'] selects all div elements with class 'example'.

• Examples: /bookstore/book[1] selects the first book element
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Q1. What is api ?
Ans. 
API stands for Application Programming Interface. It is a set of rules and protocols that allows different software applications to communicate with each other.
• APIs define the methods and data formats that applications can use to request and exchange information.

• They allow developers to access the functionality of a system or service without needing to understand its internal workings.

• Examples of APIs include Google Ma...read more
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Q2. What is rest api ?
Ans. 
REST API stands for Representational State Transfer Application Programming Interface. It is a set of rules and protocols for building and interacting with web services.
• REST API is a type of web service that allows communication between different systems over the internet.

• It uses standard HTTP methods like GET, POST, PUT, DELETE to perform operations on resources.

• REST APIs typically return data in JSON or XML format.

• Th...read more
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