Quadlabs Technologies Interview Questions and Answers

A lambda expression is a concise way to represent an anonymous function in programming, often used for functional programming tasks.

• Lambda expressions can take any number of parameters but can only have one expression.

• Example in Python: `lambda x: x * 2` creates a function that doubles its input.

• In Java, a lambda expression can be written as `(x) -> x * 2`.

• They are often used in functional programming construct...read more

STLC stands for Software Testing Life Cycle, which is a series of activities performed during the testing process.

• STLC consists of phases like requirement analysis, test planning, test design, test execution, and test closure.

• Each phase has specific goals and deliverables to ensure the quality of the software.

• STLC helps in identifying defects early in the development cycle, reducing the cost of fixing them later.

• I...read more

SDLC stands for Software Development Life Cycle, a process used by software development teams to design, develop, and test high-quality software.

• SDLC is a structured process that consists of several phases such as planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables that contribute to the overall success of the software project.

• SDLC helps en...read more

Sanity testing is a narrow and focused testing to ensure core functionalities work, while smoke testing is a broader testing to check if the build is stable enough for further testing.

• Sanity testing is a subset of regression testing, focusing on specific areas of the application to ensure they still work after changes.

• Smoke testing is a preliminary testing to check if the build is stable enough for further testing...read more

Regression testing is testing the entire application after a change, while retesting is testing a specific bug fix.

• Regression testing involves testing the entire application to ensure that new changes have not affected existing functionality.

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

• Regression testing is done after every change, while retesting is done after a bug fix.

• Examp...read more

Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

• Inheritance allows for code reuse and promotes modularity.

• The existing class is called the parent or base class, while the new class is called the child or derived class.

• The child class inherits all the properties and methods of the parent class, and can also add new properties and m...read more

Inheritance is a mechanism in object-oriented programming where a subclass acquires the properties and behaviors of its parent class.

• Inheritance allows for code reuse and promotes a hierarchical organization of code.

• The child class can override or extend the properties and behaviors inherited from the parent class.

• Inheritance can be single, multiple, or multilevel depending on the number of parent classes involved...read more