Servicenow Consultant Interview Questions and Answers for Freshers

The most optimum sorting technique is Quick Sort.

• Quick Sort is a divide and conquer algorithm that sorts an array by selecting a 'pivot' element and partitioning the other elements into two sub-arrays according to whether they are less than or greater than the pivot.

• It is efficient for large datasets and has an average time complexity of O(n log n).

• Quick Sort is widely used in practice and is considered one of the fastest sorting algorithms.

Polymorphism is the ability of a single function or method to operate on different types of data.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.

• Example: A method 'draw()' can be implemented differently in various classes that inher...read more

On change event in Javascript triggers a function when the value of an input element is changed by the user.

• Use the 'onchange' event attribute in HTML to call a function when the value of an input element is changed.

• Example:

• Alternatively, use addEventListener() method in JavaScript to attach an event handler to the 'change' event.