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Math Questions, Tricky, Similar to GRE, GMAT, 1 hour test
Node.js is better than Python for building real-time applications and handling large volumes of I/O operations.
Node.js is asynchronous and event-driven, making it ideal for handling multiple connections simultaneously.
Node.js is well-suited for building real-time applications like chat applications, online gaming platforms, and streaming services.
Node.js has a large ecosystem of libraries and frameworks, such as Expres...
Yes, I have experience with data analytics including data mining, data visualization, and statistical analysis.
Experienced in data mining techniques to extract useful information from large datasets
Proficient in data visualization tools like Tableau or Power BI to present insights in a clear and concise manner
Skilled in statistical analysis to identify trends, patterns, and correlations in data
Familiar with machine lea
Top trending discussions
posted on 15 May 2024
Inheritance in Java allows a class to inherit properties and behaviors from another class.
Inheritance is achieved using the 'extends' keyword in Java.
Subclasses can access the methods and fields of their superclass.
Java does not support multiple inheritance, but a class can implement multiple interfaces.
Use SQL query with ORDER BY and LIMIT to find the last element in a table.
Use ORDER BY column_name DESC to sort the data in descending order.
Use LIMIT 1 to retrieve only the last element.
HTML5 is the latest version of HTML with new features and improvements.
HTML5 supports new elements like <video>, <audio>, and <canvas> for multimedia content.
HTML5 introduces new APIs like Geolocation, Web Storage, and Web Workers for enhanced functionality.
HTML5 includes improvements in semantics, accessibility, and performance compared to HTML.
posted on 7 Oct 2023
I applied via LinkedIn and was interviewed before Oct 2022. There were 3 interview rounds.
posted on 9 Feb 2023
I applied via Recruitment Consulltant and was interviewed before Feb 2022. There were 2 interview rounds.
I applied via Campus Placement
The three functions of smart grid electrical protection isolation and control are fault detection, fault isolation, and service restoration.
Fault detection involves identifying any issues in the electrical system.
Fault isolation involves isolating the faulty component to prevent further damage.
Service restoration involves restoring power to the affected area as quickly as possible.
Examples of smart grid technologies th...
Yes, current is the flow of electric charge in a wire.
Current is measured in amperes (A).
It is caused by the movement of electrons in a conductor.
The direction of current flow is from positive to negative.
Current can be either direct current (DC) or alternating current (AC).
Ohm's law states that current is directly proportional to voltage.
Current increases as voltage increases
Resistance remains constant
Can be expressed as I = V/R
SQP, PRS, SRT, TUV, is right answer VXW
posted on 23 Mar 2022
I applied via Naukri.com and was interviewed in Sep 2021. There were 3 interview rounds.
posted on 12 Jul 2022
posted on 1 Feb 2024
I applied via Naukri.com and was interviewed in Jan 2024. There were 2 interview rounds.
Find min and max from List of Integers using Java 8 streams.
Use the `stream()` method on the List to create a stream of integers.
Use the `min()` method to find the minimum value.
Use the `max()` method to find the maximum value.
Find 2nd largest element using Java 8 streams from a list of integers.
Sort the list of integers in descending order using streams.
Skip the first element to get the second largest element.
Increase the values of a list of integers by 2 and create a new list.
Iterate through the list of integers
For each integer, add 2 to its value
Create a new list with the updated values
Java has introduced several new features in recent versions.
Java 8 introduced lambda expressions, which allow for functional programming.
Java 8 also introduced the Stream API for processing collections of data.
Java 9 introduced the module system, which provides better encapsulation and modularity.
Java 10 introduced local variable type inference, allowing the omission of explicit type declarations.
Java 11 introduced the...
The @Component and @Repository annotations are used in Spring Framework for different purposes.
Both annotations are used to define beans in the Spring container.
@Component is a generic stereotype annotation for any Spring-managed component.
@Repository is a specialization of @Component used for DAO classes.
The @Repository annotation provides additional exception translation for data access exceptions.
Using @Repository i...
The @Entity annotation is used in Java to mark a class as an entity, which represents a table in a relational database.
The @Entity annotation is part of the Java Persistence API (JPA) and is used in object-relational mapping (ORM) to map Java objects to database tables.
It is typically used in conjunction with other JPA annotations like @Table, @Column, and @Id.
The @Entity annotation is used to define the entity name, s...
The database is configured by setting up the necessary parameters and configurations to ensure proper functioning and performance.
Database configuration involves defining the database schema, tables, and relationships.
It includes setting up indexes and constraints for data integrity.
Configuring database security measures like user access control and permissions.
Tuning database performance by optimizing query execution ...
Dockerfile is a text file that contains instructions to build a Docker image.
Dockerfile is used to automate the creation of Docker images.
It specifies the base image, dependencies, environment variables, and commands to run.
Each instruction in the Dockerfile creates a new layer in the image.
Dockerfile can be version controlled and shared to ensure consistent builds.
Example: FROM ubuntu:latest RUN apt-get update && apt-...
CI/CD is a software development practice that enables frequent and automated code integration, testing, and deployment.
CI/CD stands for Continuous Integration and Continuous Deployment.
It involves automating the process of integrating code changes, running tests, and deploying the application.
CI/CD helps in reducing manual errors, improving code quality, and increasing development speed.
Tools like Jenkins, GitLab CI/CD...
Mutable classes in Java are classes whose state can be modified after creation.
Mutable classes allow changing their internal state
They can have mutable fields or methods that modify their state
To create a mutable class, define fields with non-final modifiers
Provide public methods to modify the state of the class
posted on 28 Aug 2023
Basics of array strings
posted on 4 Nov 2021
I applied via Naukri.com and was interviewed in May 2021. There was 1 interview round.
We are using Java 11 and Spring Boot 2.4.3 in our current project.
Java 11 provides better performance and security features compared to previous versions.
Spring Boot 2.4.3 offers improved support for Kotlin and GraalVM.
We are also using Spring Data JPA for database access and Spring Security for authentication and authorization.
Singleton Design Pattern ensures only one instance of a class exists. No, we cannot create a clone of an object from singleton class.
Singleton pattern restricts the instantiation of a class to one object.
It is used when only one object is required to coordinate actions across the system.
The instance is created only when it is requested for the first time.
The constructor of the singleton class is private.
Clone method is
Joins in SQL are used to combine data from two or more tables based on a related column.
Joins are used to retrieve data from multiple tables in a single query
Types of joins include inner join, left join, right join, and full outer join
Join conditions are specified using the ON keyword and can include multiple conditions
Aliases can be used to simplify the syntax of join queries
Triggers are database objects that automatically execute in response to certain events. Stored procedures are precompiled SQL statements.
Triggers are used to enforce business rules or to audit changes to data.
Stored procedures are used to encapsulate frequently used SQL statements for reuse and to improve performance.
Triggers can be used to update related tables when a record is inserted, updated, or deleted.
Stored pro...
Program to reverse sort keys in HashMap
Create a List from the keySet() of the HashMap
Sort the List in reverse order using Collections.sort()
Iterate through the sorted List and add the keys to a new LinkedHashMap
Return the LinkedHashMap
Maven is a build automation tool used primarily for Java projects. It manages dependencies and builds the project.
Maven is based on the concept of POM (Project Object Model) which describes the project dependencies, build process, and other configurations.
Maven has different cycles such as validate, compile, test, package, verify, install, and deploy.
The validate cycle checks if the project is correct and all necessary...
Springboot annotations are used to simplify the development process and provide additional functionality.
Annotations like @RestController and @RequestMapping are used to create RESTful web services.
@Autowired is used for dependency injection.
@Transactional is used to manage transactions.
@Component is used to mark a class as a Spring component.
@Value is used to inject values from properties files or environment variable...
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Polycab Wires
KEI Industries
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