NTT Junior Software Test Engineer Interview Questions and Answers

Q1. What is Instance variable
Ans. 
Instance variable is a variable declared in a class, but outside of any method. Each object of the class has its own copy of the instance variable.
• Instance variables are declared at the class level, outside of any method.

• Each object of the class has its own copy of the instance variable.

• Instance variables are used to store the state of an object.
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Q2. What is collection
Ans. 
A collection is a group of related objects or data items that are stored together.
• Collections can be used to store and manipulate groups of objects or data items in programming.

• Common types of collections include arrays, lists, sets, and maps.

• Collections provide methods for adding, removing, and accessing elements within the group.

• Example: An array of integers [1, 2, 3, 4] is a collection of numbers.
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Q3. List is interface or class
Ans. 
List is an interface in Java that represents an ordered collection of elements.
• List is an interface in Java.util package

• It extends Collection interface and is implemented by classes like ArrayList, LinkedList, etc.

• List allows duplicate elements and maintains insertion order
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Q4. Webdriver is interface or class
Ans. 
WebDriver is an interface in Selenium that defines methods for browser automation.
• WebDriver is part of the Selenium framework, used for automating web applications.

• It provides a set of methods to interact with web elements, such as click(), sendKeys(), and getTitle().

• Different browser drivers (like ChromeDriver, FirefoxDriver) implement the WebDriver interface.

• Example: WebDriver driver = new ChromeDriver(); initializes...read more
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1st round is aptitude test all questions are related to domain knowledge & related to testing