Capgemini Software Development Engineer Test Interview Questions and Answers

OOPS, Data Structures, Algorithms

Q1. Design Patterns used in the project?
Ans. 
Singleton, Factory, Observer, Strategy patterns were used in the project.
• Singleton pattern was used to ensure only one instance of a class is created.

• Factory pattern was used to create objects without specifying the exact class of object that will be created.

• Observer pattern was used to define a one-to-many dependency between objects.

• Strategy pattern was used to define a family of algorithms, encapsulate each one, and
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Q2. Optimization of a Web API
Ans. 
Optimizing a Web API involves improving performance, scalability, and efficiency.
• Identify and eliminate bottlenecks in the API code

• Implement caching mechanisms to reduce response times

• Use asynchronous processing to handle concurrent requests efficiently

• Optimize database queries to improve data retrieval speed

• Minimize network latency by using content delivery networks (CDNs)

• Implement rate limiting and throttling to prev
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Q1. Project Scneario based quesion on what are steps taken when we encounter an issue in production?
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Q2. Steps in implementing requirement from business to development.
Ans. 
Steps in implementing requirement from business to development involve analysis, design, implementation, testing, and deployment.
• Analyze the business requirement to understand the scope and impact on the system

• Design a solution that meets the business requirement and aligns with the existing system architecture

• Implement the solution by writing code and integrating it with other components

• Test the implemented solution t...read more
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Q1. Project details
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Q2. Framework details
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Q1. Test planning, test case development, test strategies
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Q2. Python, why automation?, summary reports
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Q1. Stlc question asked manual qa
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Q1. Coding asked sql query
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Q1. Difference between hashmap and hashtable?
Ans. 
HashMap is non-synchronized and allows null values, while Hashtable is synchronized and does not allow null values.
• HashMap is non-synchronized and not thread-safe, while Hashtable is synchronized and thread-safe.

• HashMap allows null values for both key and value, while Hashtable does not allow null keys or values.

• HashMap is faster than Hashtable as it is non-synchronized.

• HashMap is part of the Java Collections Framework
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Q2. Types of exceptions in selenium.
Ans. 
Types of exceptions in Selenium include NoSuchElementException, ElementNotVisibleException, StaleElementReferenceException, TimeoutException, and WebDriverException.
• NoSuchElementException: Thrown when an element could not be found in the DOM.

• ElementNotVisibleException: Thrown when an element is present in the DOM but not visible.

• StaleElementReferenceException: Thrown when an element is no longer attached to the DOM.

• Tim...read more
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Q3. Difference between abstract and interface?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and non-abstract methods, while interface cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract for classes ...read more
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Q1. Salary expectation
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Q1. Explain your Framework
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Q2. How to write listeners and use of it
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Q1. Performance testing entry & exit criteria
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Q2. Performance tuning questions
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Q1. Fibonacci seriers
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Q2. Oops concepts java
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Q1. Find min and max number in an array
Ans. 
Find min and max number in an array of strings
• Convert array elements to integers for comparison

• Use built-in functions like Math.min() and Math.max()

• Handle edge cases like empty array or non-numeric elements
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Q2. Test scenario for elevator
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Q1. Tell me about your self
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Q1. What is the defect life cycle
Ans. 
Defect life cycle is the process of identifying, reporting, fixing, retesting, and closing software defects.
• Defect identification: Defects are identified through testing or user feedback.

• Defect reporting: Defects are reported in a defect tracking system with details like steps to reproduce, severity, and priority.

• Defect fixing: Developers analyze and fix the reported defects.

• Defect retesting: Testers verify that the fi...read more
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Q2. What is regression testing and performance testing
Ans. 
Regression testing is retesting of software to ensure new code changes do not adversely affect existing functionality. Performance testing is testing to assess the speed, responsiveness, and stability of a system under a particular workload.
• Regression testing ensures that new code changes do not introduce new bugs or issues in existing functionality.

• Performance testing evaluates the speed, responsiveness, and stability...read more
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Q3. Write a x path
Ans. 
An x path is a way to navigate through elements in XML or HTML documents.
• Start with a forward slash (/) to indicate the root element

• Use element names to navigate through the document

• Use square brackets to specify conditions for selecting elements

• Use @ symbol to select attributes of elements
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