Expleo Group Interview Questions, Process, and Tips

Logical reasoning, Physics questions, Mathematics, English Proficiency

Social Media, AI, Reservation system etc. (general topics)

Q1. What are errors, types of errors?
Ans. 
Errors are mistakes in a program that prevent it from running correctly.
• Syntax errors: occur when code is not written correctly (e.g. missing semicolon)

• Logic errors: occur when code does not produce the expected output (e.g. incorrect formula)

• Runtime errors: occur during program execution (e.g. division by zero)
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Q2. What are Web Application?
Ans. 
Web applications are software programs that run on web servers and are accessed through web browsers.
• Web applications are accessed through a web browser

• They run on web servers

• They can be accessed from any device with an internet connection

• Examples include online banking systems, social media platforms, and e-commerce websites
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Q3. How much do you know Java? Explain in brief whatever you know.
Ans. 
I have a strong understanding of Java programming language, including object-oriented concepts, data structures, and algorithms.
• Proficient in Java syntax and core concepts such as classes, objects, inheritance, polymorphism, and encapsulation

• Experience with data structures like arrays, linked lists, stacks, queues, and trees in Java

• Familiarity with Java libraries and frameworks like Spring, Hibernate, and JUnit

• Knowledg...read more
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Q1. What is Exception handling in Java?
Ans. 
Exception handling in Java is a mechanism to handle runtime errors and prevent program crashes.
• Exceptions are objects that are thrown at runtime when an abnormal condition occurs.

• Try block is used to enclose the code that might throw an exception.

• Catch block is used to handle the exception that is thrown in the try block.

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

• Example: ...read more
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Q2. Conditional loops in Java?
Ans. 
Conditional loops in Java are used to execute a block of code repeatedly based on a condition.
• Use 'if' statement to execute a block of code only if a specified condition is true.

• Use 'while' loop to execute a block of code as long as a specified condition is true.

• Use 'for' loop to execute a block of code a specified number of times.
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Q3. Memory types, explain any one
Ans. 
There are different types of memory, such as RAM, ROM, and cache memory.
• RAM (Random Access Memory) is volatile memory that stores data temporarily while the computer is on.

• ROM (Read-Only Memory) is non-volatile memory that stores firmware and cannot be easily modified.

• Cache memory is a small, high-speed memory that stores frequently accessed data for faster retrieval.
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Q1. Tell me about yourself. How about your family, where do you live?
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Q2. Are you ready to relocate?
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Q3. Is CTC okay for you?
Ans. 
Yes, CTC is acceptable for me.
• Yes, CTC is acceptable for me as long as it is within the range I am looking for.

• I am open to discussing the CTC offered and negotiating if needed.

• I value the overall compensation package, including benefits, in addition to the CTC.

• I have researched the market rates for similar positions to ensure the CTC is competitive.
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Q1. What is haahmap
Ans. 
HashMap is a data structure in Java that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It implements the Map interface and uses hashing to store elements.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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Q1. What is internal implementation of set
Ans. 
Internal implementation of set is typically based on hash table or balanced tree data structures.
• Sets are typically implemented using hash tables for faster access and retrieval of elements.

• Some sets, like TreeSet in Java, are implemented using balanced trees to maintain elements in sorted order.

• Internal implementation may vary based on the specific set implementation in a programming language.
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Q1. Machine learning
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Q2. Deep Learning - some kind of computer vision questions
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Q1. What is DFMEA & described it how it's effectiveness.
Ans. 
DFMEA stands for Design Failure Mode and Effects Analysis. It is a systematic approach to identifying and preventing potential failures in a product or process.
• DFMEA involves identifying potential failure modes, their causes, effects, and the likelihood of their occurrence.

• It helps prioritize design improvements to mitigate risks and enhance product reliability.

• DFMEA is typically conducted during the design phase of a ...read more
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Q2. Tell me about GD&T and why we are using it?
Ans. 
GD&T stands for Geometric Dimensioning and Tolerancing. It is used to define the nominal geometry of parts and assemblies, as well as the allowable variations.
• GD&T is used to communicate design intent and ensure parts fit together properly.

• It provides a clear and concise way to specify tolerances on dimensions, form, orientation, and location of features.

• GD&T helps improve quality, reduce costs, and increase efficiency...read more
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Q3. Explain a failure in vehicle & how you resolved it.
Ans. 
I encountered a brake failure in a vehicle and resolved it by replacing the brake pads.
• Identified the issue during routine maintenance check

• Inspected the brake system to pinpoint the cause of the failure

• Replaced the worn-out brake pads with new ones

• Tested the vehicle to ensure the brakes were functioning properly
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Q4. Describe complete ECN process.
Ans. 
ECN process involves documenting and implementing changes to a product or system.
• Initiation of change request

• Review and approval of change request

• Implementation of approved changes

• Documentation of changes made

• Communication of changes to relevant stakeholders
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Q5. What are the process of validation of your components?
Ans. 
Validation of components involves testing and verifying their functionality and performance.
• Performing unit tests to ensure individual components work correctly

• Conducting integration tests to verify components work together as expected

• Running regression tests to check for any unintended changes in functionality

• Utilizing automated testing tools to streamline the validation process

• Collaborating with stakeholders to gathe
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Q1. Provided me a 2D drawing and asked to prepare in 3D.
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Q1. Tell me about yourself & your family background.
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Q2. Why you are decided to change the organisation?
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Hard level java question

Aptitude test with some 30-40 questions

Q1. One coding question
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Q2. About academic project
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Good experience with the human resources and with talent acquisition team..

Given with trending topics and went like an debate..

Q1. Scenario based questions
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Q2. Scenario based questions in testing
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Q1. Fibonacci series program in Java
Ans. 
Fibonacci series program in Java generates a sequence of numbers where each number is the sum of the two preceding ones.
• Use a loop to iterate through the desired number of Fibonacci numbers.

• Initialize variables to store the first two numbers in the sequence.

• Calculate the next number by adding the previous two numbers.

• Repeat the process until the desired number of Fibonacci numbers is generated.
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