Tech Mahindra Senior Software Engineer Interview Questions, Process, and Tips

I was asked to write a program to reverse a string using Java.

Q1. What are my roles and responsibilities?
Ans. 
As a Senior Software Engineer, your roles and responsibilities include leading development projects, mentoring junior team members, and ensuring high-quality code.
• Leading development projects from conception to completion

• Mentoring and providing guidance to junior team members

• Ensuring the quality of code through code reviews and testing

• Collaborating with cross-functional teams to deliver software solutions

• Staying update
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Q2. Explain about polymorphism
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Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example of compile-time polymorphism: function overloading in C++.

• Example of runtime polymorphism: method overriding in Java.
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Q3. Explain the differences between regression testing and retesting
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Regression testing is testing the entire application after changes, while retesting is testing a specific bug fix.
• Regression testing involves testing the entire application to ensure that new code changes have not negatively impacted existing functionality.

• Retesting involves testing a specific bug fix to ensure that the issue has been resolved.

• Regression testing is typically done after every code change, while retestin...read more
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Q4. Explain about Pega testing
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Pega testing is a software testing process specifically designed for applications built on the Pega platform.
• Pega testing involves testing the functionality, performance, and security of applications developed using Pega technology.

• It includes testing various components such as user interfaces, business logic, integrations, and workflows.

• Test cases are designed to validate the behavior of Pega applications based on bus...read more
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Q1. Explain about Automation Framework
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Automation framework is a set of guidelines, best practices, tools, and libraries used to automate testing of software applications.
• Provides structure and guidelines for automated testing

• Helps in organizing test scripts and test data

• Supports reusability of code and components

• Facilitates easy maintenance and scalability

• Examples: Selenium WebDriver, TestNG, Cucumber
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Sql and pyhton moderate level questions

Q1. Bigquery and airflow architectire
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Q2. Sql window functions and analytical questions
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Q1. What is Can FD and why it is required.
Ans. 
CAN FD stands for Controller Area Network Flexible Data Rate, it is required for high-speed communication in automotive and industrial applications.
• CAN FD allows for higher data rates compared to traditional CAN networks

• It is necessary for transmitting large amounts of data quickly and efficiently

• Used in applications where real-time communication and reliability are crucial, such as automotive ECUs

• Example: CAN FD is us...read more
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Q2. Difference bewtween LKA and LDW.
Ans. 
LKA stands for Lane Keep Assist, while LDW stands for Lane Departure Warning.
• LKA helps keep the vehicle centered in its lane by providing steering input if necessary.

• LDW alerts the driver if the vehicle is unintentionally drifting out of its lane.

• LKA is more proactive in assisting the driver with lane keeping, while LDW is more of a warning system.

• Some vehicles may have both LKA and LDW features integrated for enhanced
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Q1. Aspice model and itr requirement.
Ans. 
ASPICE (Automotive SPICE) model is a framework for software development in the automotive industry. ITR (Integrated Test Requirement) is a part of ASPICE focusing on testing requirements.
• ASPICE is a framework for software development in the automotive industry

• ITR is a part of ASPICE that focuses on testing requirements

• ASPICE helps in ensuring high-quality software development in automotive projects
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Q2. Writing the Test case for ADAS ECU.
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Writing test cases for ADAS ECU involves verifying functionality and performance of the electronic control unit.
• Identify the input and output requirements of the ADAS ECU

• Create test cases to cover different scenarios such as normal operation, edge cases, and failure modes

• Include test cases for communication protocols, sensor inputs, and system responses

• Verify the integration of ADAS ECU with other components in the sys...read more
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Q1. Find average of integer arrays using java 8 streams
Ans. 
Calculate average of integer arrays using Java 8 streams
• Use IntStream to convert the array to a stream of integers

• Use average() method to calculate the average of the integers

• Collect the result using getAsDouble() method
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Q2. What is idempotency
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Idempotency is the property of an operation where applying it multiple times has the same effect as applying it once.
• Idempotency ensures that repeating the same operation multiple times will not change the result.

• Examples include GET requests in RESTful APIs, where multiple identical requests will return the same response.

• Idempotency is important in distributed systems to prevent duplicate operations.

• PUT and DELETE req
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Q1. Functions And clsses
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Q1. Sql basics are asked
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Q2. Groupby query sybtax
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Q1. Cross site scripting
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Q2. Csrf token in CodeIgniter
Ans. 
CSRF token in CodeIgniter is a security feature to prevent cross-site request forgery attacks.
• CSRF protection is enabled by default in CodeIgniter.

• To generate a CSRF token, use the form_open() function in views.

• To validate the CSRF token, use the form_validation library in controllers.
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Q1. Xxe tage explain
Ans. 
XXE stands for XML External Entity and is a type of attack that exploits vulnerabilities in XML parsers.
• XXE attacks involve injecting malicious XML entities into an XML document to exploit vulnerabilities in the parser.

• These attacks can lead to sensitive data disclosure, server-side request forgery, and remote code execution.

• Preventing XXE attacks involves validating and sanitizing input, disabling external entity proc
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Q2. Soap vs RESTFUL API
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SOAP is a protocol, RESTful is an architectural style for APIs.
• SOAP is a protocol with strict standards for communication

• RESTful APIs are more flexible and use standard HTTP methods

• SOAP is XML-based, RESTful APIs can use various formats like JSON

• SOAP has built-in security features, RESTful APIs rely on external mechanisms

• SOAP is more suitable for complex operations, RESTful APIs are simpler and more lightweight
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