Axience Consultant Interview Questions and Answers

Q1. OOPS Concepts of Java
Ans. 
OOPS Concepts of Java include Inheritance, Polymorphism, Encapsulation, and Abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only allows access through methods.

• Abstraction focuses on the essential qualities of an object rather than specific deta
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Q2. Collections Hierarchy in Java
Ans. 
Collections hierarchy in Java includes interfaces like List, Set, Map and their implementations like ArrayList, HashSet, HashMap.
• Java collections framework provides interfaces like List, Set, Map

• List interface allows duplicate elements and maintains insertion order, examples are ArrayList, LinkedList

• Set interface does not allow duplicate elements, examples are HashSet, TreeSet

• Map interface stores key-value pairs, examp
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Test about 50 questions, 25 technical 25 general logic

Q1. What is semaphores
Ans. 
Semaphores are a synchronization tool used in operating systems to control access to shared resources by multiple processes.
• Semaphores can be used to prevent race conditions in concurrent programming

• They can be either binary (0 or 1) or counting (integer value)

• Operations on semaphores include wait (P) and signal (V)

• Example: Using semaphores to control access to a shared memory buffer
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Q2. Write the code to find prime nos using stream api
Ans. 
Using stream API to find prime numbers in Java
• Use IntStream to generate a stream of numbers

• Filter out non-prime numbers using a custom method

• Check if a number is prime by dividing it by all numbers less than itself
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Q3. Design Patterns in microservices
Ans. 
Design patterns in microservices help in structuring and organizing code for scalability and maintainability.
• Use patterns like Service Registry, Circuit Breaker, and API Gateway for communication between microservices.

• Implement patterns like Saga, CQRS, and Event Sourcing for managing data consistency and scalability.

• Consider patterns like Bulkhead, Retry, and Timeout for fault tolerance and resilience in microservices
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Q4. How to improve performance of website, product
Ans. 
To improve website or product performance, focus on optimizing speed, user experience, and SEO.
• Optimize website loading speed by reducing image sizes and minimizing HTTP requests

• Improve user experience by simplifying navigation and enhancing mobile responsiveness

• Enhance SEO by creating high-quality content, using relevant keywords, and obtaining backlinks
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Q5. Evacuation strategies
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Q6. Advantages of microservices and limitations of rest
Ans. 
Microservices offer scalability and flexibility, while REST has limitations in terms of performance and complexity.
• Microservices allow for independent development and deployment of services, leading to better scalability.

• Microservices promote flexibility and agility in software development by breaking down applications into smaller, manageable components.

• REST APIs can be limited in terms of performance due to multiple ...read more
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Q1. What is cursor and it's use
Ans. 
A cursor is a database object used to retrieve and manipulate data in a database management system.
• A cursor allows for sequential processing of query results one row at a time.

• It can be used to update or delete specific rows in a result set.

• Cursors are commonly used in stored procedures and triggers.

• Example: DECLARE cursor_name CURSOR FOR SELECT column1, column2 FROM table_name;
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Q2. Query using listagg
Ans. 
Query using listagg function to concatenate values into a single string
• Use the listagg function followed by the column name and delimiter in parentheses

• Specify the order by clause if needed

• Can be used in SQL queries to display aggregated data
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Q1. Salary discussion
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Q2. Confidence analysis
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Q1. Tell me about your self?
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Q2. Tell me about your family back ground
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Java development , android development

Q1. What is java , development of calculator ,development for web page
Ans. 
Java is a programming language used for developing various applications including calculators and web pages.
• Java is an object-oriented language

• Calculator development involves creating a GUI and implementing mathematical operations

• Web development involves using Java frameworks like Spring and Hibernate

• Java is platform-independent and can run on any operating system
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Q1. Types of risk and mitigations
Ans. 
Types of risk include strategic, financial, operational, compliance, and reputational. Mitigations include risk assessment, diversification, insurance, and contingency planning.
• Strategic risk: related to the overall direction and goals of the organization. Mitigation involves strategic planning and scenario analysis.

• Financial risk: related to the financial health of the organization. Mitigation involves financial analy...read more
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Q1. OOPS Concepts of Java
Ans. 
OOPS Concepts of Java include Inheritance, Polymorphism, Encapsulation, and Abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only allows access through methods.

• Abstraction focuses on the essential qualities of an object rather than specific deta
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Q2. Collections Hierarchy in Java
Ans. 
Collections hierarchy in Java includes interfaces like List, Set, Map and their implementations like ArrayList, HashSet, HashMap.
• Java collections framework provides interfaces like List, Set, Map

• List interface allows duplicate elements and maintains insertion order, examples are ArrayList, LinkedList

• Set interface does not allow duplicate elements, examples are HashSet, TreeSet

• Map interface stores key-value pairs, examp
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