Infosys Test Lead Interview Questions and Answers

IList is a collection interface that allows duplicate elements and maintains the order, while ICollection is a base interface for all collections.

• IList extends ICollection interface.

• IList allows duplicate elements and maintains the order, while ICollection does not guarantee order.

• IList has additional methods like Insert, RemoveAt, etc., which are not present in ICollection.

A dictionary is a collection of words and their definitions, typically organized alphabetically.

• A dictionary is used to look up the meanings of words.

• It can also provide information on pronunciation, usage, and etymology.

• Dictionaries can be physical books or online resources.

• Examples: Merriam-Webster, Oxford English Dictionary

Data types in C# include int, string, bool, double, etc.

• C# has various data types like int, string, bool, double, char, etc.

• Each data type has a specific range and memory allocation.

• Examples: int num = 10; string name = 'John'; bool isTrue = true;

XPath in Selenium is used to locate elements on a web page using XML path expression.

• Use // to select nodes in the document from the current node that match the selection no matter where they are

• Use / to select nodes in the document from the root node that match the selection

• Use @ to select attributes

• Use text() to select the text of the element

• Examples: //input[@id='username'] to locate an input element with id 'userna