Sai Computer Institute Interview Questions and Answers

Selenium IDE is a record and playback tool for automating web applications. Manual testing is done by humans, while automation is done by machines.

• Selenium IDE is a browser extension that records user actions and generates automated test scripts.

• Manual testing involves human testers executing test cases and verifying results.

• Automation testing involves using tools to execute test cases and compare actual results with expected results.

• Manual testing is time-consuming and prone...read more

Automation testing offers faster feedback, increased test coverage, and improved accuracy.

• Faster feedback on code changes

• Increased test coverage with the ability to run more tests in less time

• Improved accuracy and consistency of test results

• Reduced testing costs and time

• Ability to test in different environments and configurations

• Identification of defects earlier in the development cycle

• Improved team productivity and collaboration

• Ability to perform regression testing easily

• Exa...read more

A constructor in Java is a special type of method that is used to initialize objects.

• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• Constructors are called when an object of a class is created.

• Example: public class Car { public Car() { // constructor code } }

KPO stands for Knowledge Process Outsourcing.

• KPO involves outsourcing knowledge-based processes to external service providers.

• It focuses on tasks that require specialized knowledge, expertise, and analytical skills.

• Examples of KPO services include market research, data analysis, financial analysis, and legal research.

Collections are data structures that store and organize multiple elements in a single unit.

• Collections provide methods to add, remove, and manipulate elements.

• Examples of collections include arrays, lists, sets, and maps.

• Collections can be used to efficiently manage and access large amounts of data.

A constructor is a special method in a class that is automatically called when an object of that class is created.

• Constructors have the same name as the class they belong to

• They are used to initialize the object's state

• Constructors can have parameters to customize the initialization process

Data science is a field that uses scientific methods, algorithms, and systems to extract knowledge and insights from structured and unstructured data.

• Data science involves collecting, analyzing, and interpreting large amounts of data to make informed decisions.

• It combines statistics, machine learning, and domain knowledge to uncover patterns and trends in data.

• Data scientists use programming languages like Python and R, as well as tools like SQL and Hadoop.

• Examples of data sc...read more

Encapsulation, Inheritance, Polymorphism, Abstraction are the four pillars of OOPS in Java.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the implementation details and showing only the necessary features.