Infosys Software Testing Engineer Interview Questions and Answers for Freshers

Q1. What is sanity testing
Ans. 
Sanity testing is a subset of regression testing that quickly checks if the major functionalities of the software are working as expected.
• Sanity testing is performed after a software build to ensure its basic functionality is intact.

• It focuses on testing the critical features and functionalities of the software.

• It is a quick and shallow form of testing to determine if further testing is required.

• Sanity testing is not e...read more
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Q2. What is automation testing
Ans. 
Automation testing is the use of software tools to execute test cases and compare actual outcomes with expected outcomes.
• Automation testing involves writing scripts or using tools to automate repetitive tasks.

• It helps in reducing human errors and increases efficiency.

• It is used to test software applications, websites, and systems.

• Examples of automation testing tools include Selenium, Appium, and JUnit.
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Q3. What is oops concepts
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OOPs concepts are the fundamental principles of Object-Oriented Programming that help in designing and implementing software systems.
• Encapsulation: Wrapping data and methods into a single unit

• Inheritance: Acquiring properties and behavior of a parent class

• Polymorphism: Ability of objects to take on multiple forms

• Abstraction: Hiding implementation details and showing only functionality

• Examples: Java, C++, Python, Ruby
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Q4. What is regression testing
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Regression testing is the process of testing changes made to a software application to ensure that existing functionality still works.
• It is performed after making changes to the software application

• It ensures that existing functionality is not affected by the changes

• It helps to identify any new defects introduced by the changes

• It can be automated to save time and effort

• Examples include testing after bug fixes, new feat
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Q5. What is access specifier
Ans. 
Access specifier defines the scope of a class member.
• Access specifiers are public, private, and protected.

• Public members can be accessed from anywhere.

• Private members can only be accessed within the class.

• Protected members can be accessed within the class and its subclasses.

• Access specifiers help in encapsulation and data hiding.
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Q6. What is agile methodology
Ans. 
Agile methodology is an iterative approach to software development that emphasizes flexibility and customer satisfaction.
• Agile methodology values individuals and interactions over processes and tools

• It emphasizes working software over comprehensive documentation

• It involves frequent collaboration with customers and stakeholders

• It allows for changes and adjustments to be made throughout the development process

• Examples of...read more
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Q7. What is manual testing
Ans. 
Manual testing is a process of verifying software manually without the use of automation tools.
• It involves executing test cases manually to identify defects

• It requires human intervention to simulate real-world scenarios

• It is time-consuming and requires a lot of effort

• It is useful for testing user interface, usability, and exploratory testing

• Examples include ad-hoc testing, exploratory testing, and regression testing
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Q1. Tell me about yourself.
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Q2. Why you have interestd in this job
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Q1. What Is Schema And Which schema you used in your project ?
Ans. 
Schema is a blueprint that defines the structure of a database. I used the relational schema in my project.
• Schema is a logical representation of the entire database.

• It defines the tables, fields, relationships, and constraints.

• Relational schema is the most commonly used schema in databases.

• It organizes data into tables with rows and columns.

• Example: Employee table with columns like ID, Name, Age, Salary.
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Q2. What Is The Difference Between SQL & ETL ?
Ans. 
SQL is a language used to manage relational databases, while ETL is a process used to extract, transform, and load data from various sources into a target database.
• SQL is used to manage data within a database, while ETL is used to move data between databases

• SQL is used to query and manipulate data, while ETL is used to transform and load data into a target database

• SQL is a language, while ETL is a process

• Examples of SQ...read more
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Q3. What is agile methodology ?
Ans. 
Agile methodology is an iterative approach to software development that emphasizes flexibility and customer satisfaction.
• Agile focuses on delivering working software in short iterations

• It values collaboration between team members and with customers

• It emphasizes adapting to change rather than following a rigid plan

• Examples of agile methodologies include Scrum, Kanban, and Extreme Programming (XP)
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Q4. What The Statement Of writing A Queries ?
Ans. 
Writing queries involves creating statements to retrieve data from a database.
• Identify the data you want to retrieve

• Choose the appropriate table(s) to query

• Use SQL syntax to construct the query

• Test the query to ensure it returns the desired results
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Q5. How You Upload A Data From Source To Target ?
Ans. 
Data can be uploaded from source to target using ETL tools or manual data entry.
• Extract data from source system

• Transform data to match target system requirements

• Load data into target system

• Use ETL tools like Informatica, Talend, or SSIS

• Manual data entry can be done through UI or APIs
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Q6. What Is Buffer, Where We Use ?
Ans. 
Buffer is a temporary storage area in memory used to hold data while it is being processed or transferred.
• Buffers are used in various applications such as network communication, file I/O, and image processing.

• They help to improve performance by reducing the number of read/write operations to the main memory.

• Examples of buffer include input/output buffer, circular buffer, and double buffer.

• Buffer overflow is a common vu...read more
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Q7. What are The Joins And Constraints ?
Ans. 
Joins and constraints are used in databases to link tables and enforce rules for data integrity.
• Joins are used to combine data from two or more tables based on a related column

• Constraints are rules that are applied to columns to ensure data integrity

• Types of constraints include primary key, foreign key, unique, and check constraints

• Joins can be inner, outer, left, or right depending on the data needed

• Examples of joins ...read more
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Q1. Share details of your previous job.
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Q2. What are your salary expectations?
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Q3. What are your strengths and weaknesses?
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Q4. Why should we hire you?
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Q5. Tell me about yourself.
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Reasoning and Coding.




Gj

Technical aptitude

Q1. For software testing i. e manual and automation testing
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