L&T Technology Services Manual Test Engineer Interview Questions and Answers

System testing is a type of testing that verifies the behavior of a complete and fully integrated software system.

• It is performed on a complete system, not individual components

• It tests the system's compliance with functional and non-functional requirements

• It includes testing of system performance, security, reliability, and scalability

• It can be manual or automated

• Examples include end-to-end testing, regression testing

REST is an architectural style for web services while SOAP is a protocol for exchanging structured information.

• REST uses HTTP protocol while SOAP can use any protocol

• REST is lightweight and easy to implement while SOAP is more complex

• REST supports multiple data formats like JSON, XML, etc. while SOAP only supports XML

• REST is stateless while SOAP can maintain state between requests

• REST is preferred for mobile and web ap...read more

SDLC is a process followed for software development. Regression testing is a type of testing done to ensure that changes made to the software do not affect the existing functionality.

• SDLC stands for Software Development Life Cycle

• It consists of phases like planning, analysis, design, implementation, testing, and maintenance

• Regression testing is done to ensure that changes made to the software do not affect the existing...read more

A constructor is a special type of 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 or perform any necessary setup

• Constructors can have parameters to customize the initialization process

• Example: public class Car { public Car(String color) { this.color = color; } }

Yes, a static method can be overridden in Java using the concept of method hiding.

• In Java, static methods cannot be overridden in the traditional sense like instance methods.

• When a subclass defines a static method with the same signature as a static method in the superclass, it is called method hiding.

• Method hiding does not follow polymorphism and is resolved at compile time based on the reference type.

• Example: class...read more

Yes, a static local variable can be created inside a static method.

• Yes, a static local variable can be declared inside a static method in programming languages like C++.

• Static local variables retain their values between function calls.

• Example: static void myStaticMethod() { static int count = 0; count++; }

String memory allocation is dynamic and depends on the length of the string.

• String memory allocation is dynamic and can change based on the length of the string.

• In Java, a String object is stored in the heap memory.

• Each character in a String typically takes up 2 bytes of memory.

• String objects in Java are immutable, meaning once a String object is created, it cannot be changed.

Yes, you can create a static method inside an abstract class or interface.

• Static methods can be defined in interfaces since Java 8.

• Static methods in interfaces are used for providing utility methods that are not tied to any specific instance of the interface.

• Static methods in abstract classes can be used for common functionality that does not require an instance of the class.

The parent class of Java is the Object class.

• All classes in Java are directly or indirectly derived from the Object class.

• The Object class is the root class in Java's class hierarchy.

• It provides methods that are common to all objects in Java, such as toString(), equals(), and hashCode().

Window Handles in Selenium are unique identifiers used to handle multiple browser windows in a Selenium test script.

• Window Handles are unique alphanumeric strings assigned to each browser window opened by Selenium.

• They are used to switch between different browser windows during a test script execution.

• Window Handles can be obtained using getWindowHandles() method in Selenium.

• Example: Set handles = driver.getWindowHandl

Reverse a string using Java program and handle stale element in Selenium

• Create a Java program to reverse a string using StringBuilder or char array

• In Selenium, handle stale element exception by refreshing the element or using WebDriverWait

• Example: Java program - input: 'hello', output: 'olleh'; Selenium - handle stale element by refreshing the element before interacting with it

My expected salary is based on my experience, skills, and the market rate for Automation Test Engineers.

• I have researched the average salary range for Automation Test Engineers in this location.

• I am looking for a competitive salary that reflects my expertise in automation testing.

• I am open to negotiation based on the overall compensation package offered.