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D&K Technologies Interview Questions and Answers
9 Interview questions
A CSRF token is a security measure to prevent unauthorized actions on behalf of authenticated users in web applications.
CSRF stands for Cross-Site Request Forgery.
It protects against attacks where unauthorized commands are transmitted from a user that the web application trusts.
A CSRF token is a unique, secret, and unpredictable value generated by the server and sent to the client.
The token is included in forms or...
ORM (Object-Relational Mapping) is a programming technique for converting data between incompatible type systems using objects.
ORM allows developers to interact with databases using Python objects instead of SQL queries.
Popular ORM libraries in Python include SQLAlchemy and Django ORM.
Example: Using Django ORM, you can create a new user with 'User.objects.create(username='john')'.
ORM abstracts database interaction...
OOPs (Object-Oriented Programming) is a programming paradigm based on objects and classes, enhancing code reusability and organization.
Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).
Inheritance: Mechanism to create a new class using properties and methods of an existing class (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present ...
Access modifiers in Java control the visibility and accessibility of classes, methods, and variables.
Access modifiers include public, private, protected, and default (no modifier).
Public - accessible from any other class.
Private - only accessible within the same class.
Protected - accessible within the same package and subclasses.
Default - accessible only within the same package.
Access modifiers help in encapsulati...
Hibernate is an open-source ORM framework for Java that simplifies database interactions through object-relational mapping.
Hibernate maps Java classes to database tables, allowing developers to work with Java objects instead of SQL queries.
It supports various database systems like MySQL, PostgreSQL, Oracle, etc.
Hibernate provides features like caching, lazy loading, and transaction management to enhance performanc...
An abstract class in Java is a class that cannot be instantiated and may contain abstract methods that must be implemented by subclasses.
An abstract class can have both abstract methods (without a body) and concrete methods (with a body).
Example: 'abstract class Animal { abstract void sound(); }'
Subclasses must implement all abstract methods to be instantiated.
Example: 'class Dog extends Animal { void sound() { Sy...
Props are used in React to pass data from a parent component to a child component.
Props are read-only and cannot be modified by the child component
Props are passed as attributes to the child component in JSX
Props can be any type of data, including strings, numbers, objects, or even functions
Props can be used to customize the behavior or appearance of a component
Props can be accessed in the child component using th...
Hooks in React are functions that allow you to use state and other React features in functional components.
Hooks are introduced in React 16.8 as a way to write reusable logic in functional components.
They allow you to use state and other React features without writing a class.
Hooks provide a way to break down complex components into smaller, reusable functions.
Some commonly used hooks are useState, useEffect, useC...
React is a JavaScript library for building user interfaces. React components are reusable, self-contained building blocks of a UI.
React is a JavaScript library for creating interactive UIs
React components are reusable and self-contained
Components can be nested within each other to create complex UI structures
Components can have their own state and lifecycle methods
React uses a virtual DOM to efficiently update the...
D&K Technologies Interview Experiences
6 interviews found
Anonymous
Selected
I appeared for an interview in Feb 2025.
(2 Questions)
- Q1. What is csrf token
- Ans.
A CSRF token is a security measure to prevent unauthorized actions on behalf of authenticated users in web applications.
CSRF stands for Cross-Site Request Forgery.
It protects against attacks where unauthorized commands are transmitted from a user that the web application trusts.
A CSRF token is a unique, secret, and unpredictable value generated by the server and sent to the client.
The token is included in forms or AJAX...
- Q2. What is ORM
- Ans.
ORM (Object-Relational Mapping) is a programming technique for converting data between incompatible type systems using objects.
ORM allows developers to interact with databases using Python objects instead of SQL queries.
Popular ORM libraries in Python include SQLAlchemy and Django ORM.
Example: Using Django ORM, you can create a new user with 'User.objects.create(username='john')'.
ORM abstracts database interactions, ma...
Selected
I applied via Naukri.com and was interviewed in Jul 2024. There were 2 interview rounds.
8 part of mcq questions with verbal logical and analytical and technical question of 4 parts
10 question of program in our choosen languages
Selected
I applied via Walk-in and was interviewed in Mar 2024. There were 3 interview rounds.
Mathematical question , grammatical question
(2 Questions)
- Q1. What is oops and why we use it in java?
- Q2. What are the access modifiers in java , why we use them?
(2 Questions)
- Q1. Introduce yourself?
- Q2. Tell me about your project?
Skills evaluated in this interview
Selected
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There was 1 interview round.
(5 Questions)
- Q1. What is react and define react components
- Ans.
React is a JavaScript library for building user interfaces. React components are reusable, self-contained building blocks of a UI.
React is a JavaScript library for creating interactive UIs
React components are reusable and self-contained
Components can be nested within each other to create complex UI structures
Components can have their own state and lifecycle methods
React uses a virtual DOM to efficiently update the UI
- Q2. What is Hooks in react
- Ans.
Hooks in React are functions that allow you to use state and other React features in functional components.
Hooks are introduced in React 16.8 as a way to write reusable logic in functional components.
They allow you to use state and other React features without writing a class.
Hooks provide a way to break down complex components into smaller, reusable functions.
Some commonly used hooks are useState, useEffect, useContex...
- Q3. Define props and its use
- Ans.
Props are used in React to pass data from a parent component to a child component.
Props are read-only and cannot be modified by the child component
Props are passed as attributes to the child component in JSX
Props can be any type of data, including strings, numbers, objects, or even functions
Props can be used to customize the behavior or appearance of a component
Props can be accessed in the child component using the 'pr...
- Q4. Why did you choose this company
- Ans.
I chose this company for its innovative projects, strong team culture, and commitment to professional growth.
The company is known for its cutting-edge technology, like the recent launch of a progressive web app that improved user engagement by 30%.
I admire the collaborative environment here, where team members regularly share knowledge through workshops and hackathons.
The emphasis on continuous learning aligns with my ...
- Q5. Hshs hshsh hshshs hshshs shshhs
Skills evaluated in this interview
Jigar Parmar
Selected
I applied via Naukri.com and was interviewed before Apr 2023. There were 2 interview rounds.
(3 Questions)
- Q1. What is interface?
- Q2. What is Hibernate?
- Q3. What is abstract class?
(2 Questions)
- Q1. Current package
- Q2. Notice period and joining date
Skills evaluated in this interview
(1 Question)
- Q1. About my self intro and test my skill
Interview Preparation Tips
Top trending discussions
Interview questions from similar companies
Saloni Sharma
I applied via Company Website and was interviewed in Apr 2024. There was 1 interview round.
(1 Question)
- Q1. AWS project related
Selected
I applied via Naukri.com and was interviewed in Nov 2022. There were 4 interview rounds.
(1 Question)
- Q1. Question were asked on basics of Java and SQL. Eg:- OOPS concepts, Collections
(1 Question)
- Q1. Questions were asked specific topics on Java and SQL again. This time it was moderate. Eg:- Exception Handling, Springboot, Subquery, Joins etc
(1 Question)
- Q1. This round was normal and HR was explaining the company policies and discussed the package.
Interview Preparation Tips
- Core Java
- Advanced Java
- Oracle
I applied via Indeed and was interviewed in Jul 2024. There was 1 interview round.
(6 Questions)
- Q1. Stringbuilder and string buffer diff
- Ans.
StringBuilder is non-synchronized and faster, while StringBuffer is synchronized and thread-safe.
1. Synchronization: StringBuffer is synchronized, making it thread-safe. StringBuilder is not synchronized, making it faster but not thread-safe.
2. Performance: StringBuilder is generally preferred for single-threaded scenarios due to better performance.
3. Usage: Use StringBuffer when you need to work with strings in a mult...
- Q2. Where we store the object of string
- Q3. What is bean in springboot
- Q4. What is query parameters and path param
- Q5. Code snippet related to exception
- Q6. Diff between exception and error
Skills evaluated in this interview
Kasinathan Nagarajan
(2 Questions)
- Q1. Good queries like
- Q2. Sorting from two array,sum if the number equivalent to sequence of number.
Skills evaluated in this interview
D&K Technologies Interview FAQs
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Overall Interview Experience Rating
based on 6 interview experiences
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D&K Technologies Reviews and Ratings
based on 15 reviews
Rating in categories
|
Java Developer
5
salaries
|  ₹1.8 L/yr - ₹2 L/yr |
|
Graphic Designer
5
salaries
| ₹1 L/yr - ₹3.3 L/yr |
|
Business Development Manager
5
salaries
| ₹2 L/yr - ₹6 L/yr |
|
Embedded Developer
5
salaries
| ₹1.6 L/yr - ₹2 L/yr |
|
Software Developer
4
salaries
| ₹1 L/yr - ₹3.2 L/yr |
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