10+ InfoHybrid Interview Questions and Answers

Extract and manipulate numerical value from a string.

• Use regular expressions to extract the numerical value from the string.

• Convert the extracted value to an integer, add 100 to it, and then format it back into the original string format.

• Print the updated string with the new numerical value.

let is block scoped, const is immutable, var is function scoped

• let: block scoped, can be reassigned

• const: block scoped, cannot be reassigned, but properties of objects can be changed

• var: function scoped, can be reassigned

The static aspect of a non-static method refers to the fact that it belongs to the class and can be accessed without creating an instance of the class.

• Non-static methods are associated with an instance of a class and can access instance variables.

• Static methods, on the other hand, belong to the class itself and can be accessed without creating an instance.

• Non-static methods can access static variables and methods, but static methods cannot access non-static variables and meth...read more

Map applies a function to each element of an array and returns a new array, while forEach iterates over each element without returning a new array.

• Map returns a new array with the results of applying a function to each element of the original array.

• forEach simply iterates over each element of the array without returning a new array.

• Example: Using map to double each element in an array - [1, 2, 3].map(num => num * 2) would return [2, 4, 6].

• Example: Using forEach to log each el...read more

ES6 features are new additions to JavaScript introduced in ECMAScript 2015.

• Arrow functions

• Let and const declarations

• Template literals

• Destructuring assignments

• Classes

• Promises

• Modules

Program to sort an array of strings

• Use a sorting algorithm like bubble sort, selection sort, or merge sort

• Iterate through the array and compare adjacent elements to sort them

• Ensure the sorting algorithm is efficient and handles edge cases

Overloading is having multiple methods in the same class with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.

• Overloading is resolved at compile time based on the method signature, while overriding is resolved at runtime based on the object type.

• Overloading is used to provide different implementations of a method based on the input parameters, while overriding is used to provid...read more

Encapsulation is achieved by restricting access to certain components of an object and only allowing access through designated methods.

• Use access modifiers like private, protected, and public to control access to class members

• Create getter and setter methods to access and modify private variables

• Encapsulate related data and methods within a class to ensure data integrity

The question is asking for manual testing notes of Q spider.

• Q spider is a software testing training institute.

• Manual testing involves executing test cases manually without using any automation tools.

• Manual testing notes of Q spider may include topics like test case design, test execution, defect reporting, and test documentation.

• Examples of manual testing notes could be: 'How to write effective test cases?', 'Best practices for test execution', 'Defect tracking and reporting ...read more

Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.

• Variable and function declarations are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations take precedence over variable declarations.

• Hoisting can lead to unexpected behavior if not understood properly.

String is immutable in order to ensure data integrity and security.

• Immutable strings prevent accidental changes to data, ensuring data integrity.

• Immutable strings allow for more efficient memory management and optimization.

• Immutable strings help prevent security vulnerabilities such as injection attacks.

• Example: In Java, once a string object is created, its value cannot be changed.

The question is asking for SQL notes of Q spider.

• Q spider is a software training institute that provides SQL courses.

• The question is asking for notes related to SQL from Q spider.

• The answer should provide a descriptive explanation of the SQL notes.

An arrow function is a concise way to write functions in JavaScript.

• Arrow functions are written using the '=>' syntax.

• They do not have their own 'this' keyword.

• They are often used for short, one-line functions.

• Example: const add = (a, b) => a + b;

Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.

• Spring Boot eliminates the need for manual configuration by providing defaults for most settings.

• It allows developers to quickly set up and run standalone Spring-based applications.

• Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.

• It promotes convention over configuration, reducing the amount of boilerplate code...read more