10+ IPL Biologicals Interview Questions and Answers

Angular is a JavaScript framework for building web applications.

• Developed and maintained by Google

• Uses TypeScript for building applications

• Provides a modular approach to building applications

• Uses directives, components, and services for building UI

• Example code:

Find the element that appears only once in an array of strings

• Use XOR operation to find the element that appears only once

• Iterate through the array and XOR each element to find the unique element

• Example: ['apple', 'banana', 'apple', 'orange', 'banana'] should return 'orange'

Exception handling is an important aspect of any project to ensure smooth functioning.

• We use try-catch blocks to handle exceptions.

• We log the exceptions to track and fix them.

• We also use custom exceptions to handle specific errors.

• We prioritize handling critical exceptions first.

• We regularly review and update our exception handling approach.

Abstraction is hiding unnecessary details while encapsulation is hiding implementation details.

• Abstraction focuses on what an object does rather than how it does it.

• Encapsulation is the practice of keeping implementation details hidden from the user.

• Abstraction and encapsulation work together to create more modular and maintainable code.

• Example of abstraction: A car's dashboard shows only necessary information like speed, fuel level, etc.

• Example of encapsulation: A class in p...read more

Comparing strings, counting duplicate characters using hash map, and finding the third highest salary from emp table in SQL.

• Use a hash map to count duplicate characters in a string.

• Compare strings by using built-in string comparison functions or algorithms.

• To find the third highest salary in SQL, you can use a subquery or window function like ROW_NUMBER().

Closure, currying, higher-order functions, promises, and Redux are all concepts in JavaScript programming.

• Closure refers to the ability of a function to access variables from its outer scope even after the outer function has finished executing.

• Currying is the process of converting a function that takes multiple arguments into a sequence of functions that each take a single argument.

• Higher-order functions are functions that can take other functions as arguments or return funct...read more

In my project, I implemented real-time Oops concepts by using inheritance, encapsulation, and polymorphism to create modular and reusable code.

• Used inheritance to create a base class with common properties and methods, then derived classes with specific functionalities.

• Implemented encapsulation by restricting access to certain data and methods within classes, ensuring data integrity and security.

• Leveraged polymorphism to allow objects of different classes to be treated as obj...read more

The flow of a Springboot Application involves the initialization of the application context, handling HTTP requests, processing business logic, and returning responses.

• Initialization of the application context using annotations like @SpringBootApplication

• Handling HTTP requests through controllers annotated with @RestController

• Processing business logic in service classes annotated with @Service

• Interacting with databases using repositories annotated with @Repository

• Returning re...read more

String is immutable because it cannot be modified once created.

• Immutable objects are safer to use in multi-threaded environments.

• String pool in Java is possible because of immutability.

• StringBuffer and StringBuilder classes are used for mutable strings.

• Example: String s = "hello"; s.concat(" world"); // returns a new string, s remains unchanged.

OOPS Concepts are the fundamental principles of Object-Oriented Programming.

• Encapsulation - bundling of data and methods that operate on that data

• Inheritance - ability of a class to inherit properties and methods from a parent class

• Polymorphism - ability of objects to take on many forms

• Abstraction - hiding of complex implementation details from the user

• Example: A car object can have properties like color, model, and methods like start, stop, accelerate

• Example: A child class c...read more

ABC is a term that can have different meanings depending on the context.

• ABC can refer to the alphabet's first three letters.

• In business, ABC can stand for Activity-Based Costing.

• In medicine, ABC can be an acronym for Airway, Breathing, and Circulation.

• ABC can also be a popular children's song and TV show.

The default keyword is used in programming languages to specify a default value or behavior.

• In switch statements, default is used as a catch-all case when no other case matches

• In function parameters, default values can be specified using the default keyword

• In object destructuring, default values can be assigned using the default keyword

Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

• Compare adjacent elements and swap them if they are in the wrong order

• Repeat this process until the list is sorted

• Time complexity is O(n^2)

• Example:

• int[] arr = {5, 2, 8, 12, 1};

• for (int i = 0; i < arr.length - 1; i++) {

• for (int j = 0; j < arr.length - i - 1; j++) {

• if (arr[j] > arr[j + 1]) {

• int temp = arr[j];

• arr[j] = arr...read more

String pool is a mechanism in programming languages where strings are stored in a shared memory area to save memory and improve performance.

• String pool helps in reducing memory usage by storing only one copy of each unique string.

• Strings in the pool can be easily shared among different parts of the program.

• In Java, string literals are automatically stored in the string pool.

• Example: String str1 = "Hello"; String str2 = "Hello"; // Both str1 and str2 point to the same string i...read more

Azure provides infrastructure and services for hosting SharePoint in the cloud.

• Azure provides virtual machines for hosting SharePoint servers

• Azure also offers services like Azure SQL Database and Azure Active Directory for SharePoint

• SharePoint can be integrated with other Azure services like Azure Search and Azure Functions

• Azure provides scalability and flexibility for SharePoint deployments

Hive tables store data in HDFS while external tables reference data stored outside HDFS.

• Hive tables store data in HDFS, while external tables reference data stored outside HDFS.

• External tables are useful when data needs to be shared across different Hive instances or when data is already stored in a different location.

• Hive tables are managed by Hive and are deleted when the table is dropped, while external tables are not deleted when the table is dropped.

• Example: Creating a H...read more

SharePoint is a web-based collaboration and document management platform by Microsoft.

• SharePoint is built on top of ASP.NET and IIS.

• It uses a three-tier architecture consisting of web, application, and database servers.

• SharePoint supports various deployment models such as on-premises, cloud, and hybrid.

• It provides features such as document libraries, lists, workflows, and search capabilities.

• SharePoint can be customized using SharePoint Designer, Visual Studio, and third-part...read more

Data warehouse (DWH) is structured and optimized for querying and analysis, while data lake is a vast repository for storing raw data in its native format.

• DWH is used for structured data and is optimized for querying and analysis.

• Data lake stores raw data in its native format, allowing for more flexibility and scalability.

• DWH is typically used for business intelligence and reporting purposes.

• Data lake is suitable for storing large volumes of unstructured data like logs, image...read more