Infosec Train Interview Questions and Answers for Experienced

Q1. Define marker interface
Ans. 
A marker interface is an interface with no methods used to mark a class as having a particular property or behavior.
• Marker interfaces are used to provide metadata about a class.

• They are often used in frameworks and libraries to indicate that a class should be treated in a special way.

• Examples include Serializable, Cloneable, and Remote interfaces in Java.

• Marker interfaces can also be used to enforce design patterns, su
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Q2. Define thread concurrency
Ans. 
Thread concurrency refers to multiple threads executing simultaneously in a program.
• Concurrency allows for efficient use of resources and can improve performance.

• However, it can also lead to race conditions and other synchronization issues.

• Synchronization mechanisms like locks and semaphores can be used to manage concurrency.

• Examples of concurrent programming languages include Java and Python's threading module.
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Q1. In trend java questions
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Q1. Advance java questions, questions related to microservice and java 8
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Q1. How do you handle conflicting stockholder requirements n a project?
Ans. 
I prioritize stakeholder requirements through effective communication, negotiation, and alignment with project goals.
• Identify and document all stakeholder requirements to understand the full scope.

• Facilitate meetings to discuss conflicting requirements and encourage open dialogue.

• Use prioritization techniques, such as MoSCoW (Must have, Should have, Could have, Won't have), to assess the importance of each requirement.

• ...read more
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String , Array ,Collection framework related questions.

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Q1. Html,Css,Js. Interviewer don't have knowledge on Java,React js.And if you don't able to answer basic html,css related questions they will disqualify you.
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Q1. Docker Basics:What is Docker, and how does it differ from traditional virtualization?Explain the purpose of Docker images and containers.Node.js Fundamentals:Describe the event-driven architecture of Node....read more
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Q1. Expected salary, family, future plans
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Q1. What is the difference between an abstract class and an interface in object-oriented programming?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have method implementations, while interface cannot.

• A class can implement multiple interfaces, but can only inherit from one abstract class.

• Interfaces are used to define contracts for classes to implement, while abstract classes are used to provide a common base for subclasses.

• Example: Abstr...read more
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Q2. Abstract classes can have implemented methods; interfaces can only have declarations (before JAVA 8).
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