Promact InfoTech Interview Questions and Answers

Q1. Explain about your project?
Ans. 
Developed a web application for tracking personal fitness goals and progress.
• Used HTML, CSS, and JavaScript for front-end development.

• Implemented a RESTful API using Node.js and Express for back-end functionality.

• Utilized MongoDB for database storage and retrieval of user data.

• Incorporated chart.js library for visualizing fitness data trends.
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Q2. Some more simple tech and HR related questions.
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Time was 1 hr for aptitute and then technical exam and then there was a call for an interview where the questions asked were from basic dsa

The topic was on dsa and very easy oop concept and it can be solved easily

Q1. Explain Rag architecture
Ans. 
Rag architecture is a data architecture pattern that stands for Raw, Aggregated, and Generated data layers.
• Rag architecture is a data architecture pattern used to organize data into three layers: Raw, Aggregated, and Generated.

• Raw data layer stores the original, unprocessed data as it is collected.

• Aggregated data layer contains summarized and aggregated data for faster querying and analysis.

• Generated data layer include...read more
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Q2. Explain transformer architecture
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Transformer architecture is a type of deep learning model that utilizes self-attention mechanism for processing sequential data.
• Utilizes self-attention mechanism to weigh the importance of different input elements

• Consists of encoder and decoder layers for processing input and generating output

• Introduced in the paper 'Attention is All You Need' by Vaswani et al. in 2017
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It was an online test. there was total 60 questions categorised in 6 sections having 5 questions and 1 section having 30 questions. total time given was 30 minute

There was total 3 questions and had a time limit of 1 hr 30 minutes. this test was offline at an institution, each student was given a computer. questions were on easy level.

Q1. It was both technical and hr round. i was asked questions on java language and oops concept. here are few examples.
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Q2. What is jvm, jre, jdk?
Ans. 
JVM is Java Virtual Machine, JRE is Java Runtime Environment, JDK is Java Development Kit.
• JVM is an abstract machine that provides a runtime environment in which Java bytecode can be executed.

• JRE includes JVM, libraries, and other necessary components to run Java applications.

• JDK is a software development kit that includes JRE, compiler, debugger, and other tools for developing Java applications.
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Q3. What is jmm(java memory management)?
Ans. 
JMM stands for Java Memory Management, which is responsible for managing memory allocation and deallocation in Java programs.
• JMM ensures that objects are allocated and deallocated properly in Java programs.

• It includes features like garbage collection to reclaim memory from unused objects.

• JMM helps prevent memory leaks and optimize memory usage in Java applications.
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Q4. Tell me about abstract classes and interfaces
Ans. 
Abstract classes and interfaces are used in object-oriented programming to define common behaviors and characteristics for classes.
• Abstract classes can have both abstract and concrete methods, while interfaces can only have abstract methods.

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

• Abstract classes can have constructors, while interfaces cannot.

• Abstract classes can have mem...read more
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Q5. Tell about exception handling in java.
Ans. 
Exception handling in Java is a mechanism to handle runtime errors and prevent program crashes.
• Java uses try-catch blocks to handle exceptions.

• Exceptions can be caught and handled using catch blocks.

• The finally block is used to execute code regardless of whether an exception is thrown or not.

• Java provides predefined exception classes like NullPointerException, ArrayIndexOutOfBoundsException, etc.

• Custom exceptions can b
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Q6. What is void in java?
Ans. 
void in Java is a keyword used to indicate that a method does not return any value.
• Void is used as the return type of a method that does not return any value.

• It is used to define methods that perform actions without returning a value.

• Example: public void printMessage() { System.out.println("Hello!"); }
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