IBM Interview Questions, Process, and Tips for Experienced

Q1. Tell about design pattern
Ans. 
Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating maintainable, scalable, and efficient code.

• Some common design patterns include Singleton, Factory, Observer, and Strategy.

• Design patterns can be categorized into three main groups: creational, structural, and behavioral.
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Q2. Functional Overloading vs function overriding
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Functional overloading involves multiple functions with the same name but different parameters, while function overriding involves a subclass providing a specific implementation for a method in its superclass.
• Functional overloading allows multiple functions with the same name but different parameters.

• Function overriding occurs in inheritance when a subclass provides a specific implementation for a method in its supercl...read more
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Q3. What is hoisting in Java script
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Hoisting in JavaScript is a behavior where variable and function declarations are moved to the top of their containing scope during the compilation phase.
• Variable declarations are hoisted to the top of their scope, but not their initializations.

• Function declarations are fully hoisted, including their definitions.

• Hoisting can lead to unexpected behavior if not understood properly.
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Q4. What is memonisation
Ans. 
Memoization is a technique used in computer science to store the results of expensive function calls and return the cached result when the same inputs occur again.
• Memoization helps in improving the performance of a program by reducing redundant calculations.

• It is commonly used in dynamic programming to optimize recursive algorithms.

• Example: Fibonacci sequence calculation can be optimized using memoization to store prev
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Q5. What is promise, closure ?
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A promise is an object representing the eventual completion or failure of an asynchronous operation. A closure is a function defined within another function that has access to its parent function's scope.
• Promise is used to handle asynchronous operations in JavaScript.

• Promises can be in one of three states: pending, fulfilled, or rejected.

• Closures allow functions to access variables from their parent function even after...read more
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Q6. Difference between == && ===
Ans. 
== is used for equality comparison, while === is used for strict equality comparison.
• == checks for equality of values, while === checks for equality of values and data types.

• == can perform type coercion, while === does not.

• == is less strict than ===.

• Example: 1 == '1' returns true, but 1 === '1' returns false.
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Q1. How to connect to PHP to SQL ?
Ans. 
To connect PHP to SQL, use functions like mysqli_connect or PDO to establish a connection and execute queries.
• Use mysqli_connect function to establish a connection with MySQL database

• Use PDO class to connect to various types of databases like MySQL, PostgreSQL, etc.

• Execute SQL queries using functions like mysqli_query or PDO::query
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Q2. Full form of PHP?
Ans. 
Hypertext Preprocessor
• Stands for Hypertext Preprocessor

• Server-side scripting language

• Used for web development

• Open source and free to use
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Q3. Haepar text pre prosesar
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Q4. Php and SQL opsn sorss language
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Q1. Simple .net questions
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Q2. Sql database questions
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30min online test. Easy level.

Q1. Technical interview with core concepts
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Q2. Conceptual , core knowledge.
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Q1. Managereal round
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