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CognitivZen Technologies Interview Questions and Answers
8 Interview questions
Heap memory is used for dynamic memory allocation, while stack memory is used for static memory allocation.
Heap memory is used for storing objects and is managed by the JVM, while stack memory is used for storing method calls and local variables.
Heap memory is larger in size compared to stack memory.
Objects stored in heap memory can be accessed globally, while variables in stack memory are only accessible within t...
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).
Example: Animal superclass with subclasses Dog and Cat. Both Dog and Cat can be treated as Animals.
OOP concepts include encapsulation, inheritance, polymorphism, and abstraction, forming the foundation of object-oriented programming.
Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: A class 'Car' with attributes like 'speed' and methods like 'accelerate()'.
Inheritance: Mechanism to create a new class using properties and methods of an existing class. Example: 'El...
The application.properties file is used to store configuration properties for a Java application.
It is a key-value pair file where each line represents a property.
It is commonly used in Spring Boot applications to configure various settings.
Properties can be accessed using the @Value annotation or the Environment object.
It allows for easy customization and externalization of application configuration.
Example: serv...
A Controller is used for handling requests in a web application, while a Rest Controller specifically handles RESTful requests.
A Controller is a component in the MVC architecture that handles user requests and returns a response.
A Rest Controller is a specialized type of Controller that is used for handling RESTful requests.
A Rest Controller typically returns data in JSON or XML format.
Rest Controllers often use a...
Reflection API is a feature in Java that allows examining and modifying the behavior of classes, methods, and fields at runtime.
Allows inspecting and modifying classes, methods, and fields at runtime
Provides a way to access metadata about classes and their members
Enables dynamic loading of classes and interfaces
Useful for creating generic code, serialization, and testing frameworks
The enhanced version of level 1 involves more complex tasks and challenges.
Implement additional features to improve functionality
Optimize code for better performance
Enhance user interface for improved user experience
Changing the pattern in coding involves modifying the structure or design of the code to improve efficiency or functionality.
Identify the current pattern and its limitations
Determine the desired outcome or improvements
Modify the code structure to align with the new pattern
Test the changes to ensure functionality is maintained
CognitivZen Technologies Interview Experiences
9 interviews found
Anonymous
Selected
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
(5 Questions)
- Q1. Few coding questions
- Q2. Previous project detailed explanation
- Q3. Oops conceptsexplanation
- Ans.
OOP concepts include encapsulation, inheritance, polymorphism, and abstraction, forming the foundation of object-oriented programming.
Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: A class 'Car' with attributes like 'speed' and methods like 'accelerate()'.
Inheritance: Mechanism to create a new class using properties and methods of an existing class. Example: 'Electri...
- Q4. What is Polymorphism
- Ans.
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).
Example: Animal superclass with subclasses Dog and Cat. Both Dog and Cat can be treated as Animals.
- Q5. Differences between heap and stack memory
- Ans.
Heap memory is used for dynamic memory allocation, while stack memory is used for static memory allocation.
Heap memory is used for storing objects and is managed by the JVM, while stack memory is used for storing method calls and local variables.
Heap memory is larger in size compared to stack memory.
Objects stored in heap memory can be accessed globally, while variables in stack memory are only accessible within the sc...
Interview Preparation Tips
panel here are well exposed to technology and have years of experience in relevant fiels.
Selected
I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.
(3 Questions)
- Q1. SQL, API's, documentation,
- Q2. Working of Postman, jira, scrum(very important)
- Q3. Sprint, backlog refinement, all rules of scrum
Payments app documentation
I applied via Approached by Company and was interviewed in Oct 2023. There were 2 interview rounds.
(5 Questions)
- Q1. Difference between Controller and Rest Controller
- Q2. Use of application.properties file
- Q3. Questions on serialization
- Q4. Questions on stream()
- Q5. Questions on collection and collections()
Interview Preparation Tips
Skills evaluated in this interview
Pragna Reddy
Selected
I applied via LinkedIn
45 mins and very good
(3 Questions)
- Q1. Enhanced version of level 1
- Ans.
The enhanced version of level 1 involves more complex tasks and challenges.
Implement additional features to improve functionality
Optimize code for better performance
Enhance user interface for improved user experience
- Q2. Some string operation some series
- Q3. Coding exercises
(3 Questions)
- Q1. Family and job profile
- Q2. Friendly HR level
- Q3. General question
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Aug 2023. There were 2 interview rounds.
(2 Questions)
- Q1. What is Reflection Api
- Q2. What are roles and responsibilities in your project
Interview Preparation Tips
Skills evaluated in this interview
(1 Question)
- Q1. Asked about a Fibonacci series code
Interview Preparation Tips
I applied via Walk-in and was interviewed in Mar 2022. There were 3 interview rounds.
Technical question paper for freshers , one on one for experienced
(2 Questions)
- Q1. Technically related discussion
- Q2. Abt current project roles and responsibilities
- Ans.
In my current project, I am responsible for managing the roles and responsibilities of the team members.
I ensure that each team member understands their specific role and responsibilities in the project.
I assign tasks and monitor progress to ensure timely completion.
I facilitate communication and collaboration among team members.
I provide support and guidance to team members when needed.
I track and report on the overal...
Interview Preparation Tips
Selected
I applied via Company Website and was interviewed before Aug 2022. There were 2 interview rounds.
(3 Questions)
- Q1. About my current pojects
- Q2. Changing the pattern in coding
- Ans.
Changing the pattern in coding involves modifying the structure or design of the code to improve efficiency or functionality.
Identify the current pattern and its limitations
Determine the desired outcome or improvements
Modify the code structure to align with the new pattern
Test the changes to ensure functionality is maintained
- Q3. Writing a code on given assignment
Interview Preparation Tips
- Python
- Django
- Flask
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before Jun 2022. There were 3 interview rounds.
Panel asked me to write a code for missing numbers .
done and executed
(1 Question)
- Q1. HR round went well, enjoyed it
Interview Preparation Tips
Interview experience it self will be a learning .
Feel free to ask the panel about your doubts
Top trending discussions
Interview questions from similar companies
Selected
I applied via Naukri.com
(1 Question)
- Q1. Data structures Core java Spring boot Hibernate
Interview Preparation Tips
CognitivZen Technologies Interview FAQs
The duration of CognitivZen Technologies interview process can vary, but typically it takes about less than 2 weeks to complete.
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based on 42 reviews
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7-12 Yrs
Not Disclosed
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Software Engineer
21
salaries
|  ₹3.9 L/yr - ₹9.5 L/yr |
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QA Engineer
13
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| ₹4.8 L/yr - ₹12.5 L/yr |
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Software Developer
10
salaries
| ₹4 L/yr - ₹13 L/yr |
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Senior Software Engineer
8
salaries
| ₹13.2 L/yr - ₹21 L/yr |
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Associate Software Engineer
6
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| ₹3.1 L/yr - ₹4.8 L/yr |
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