Isha Infra Projects Interview Questions and Answers

Group discussion is a very important tool in addressing various problems.

Q1. What is the count of different types of vernier calipers?
Ans. 
There are mainly two types of vernier calipers: standard vernier caliper and digital vernier caliper.
• Standard vernier caliper

• Digital vernier caliper
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Q2. What is the count of measurements in micrometers?
Ans. 
Measurements in micrometers are used for very small distances.
• Micrometers are commonly used in precision engineering and manufacturing.

• 1 micrometer is equal to 0.001 millimeters.

• Examples of measurements in micrometers include the thickness of a human hair (around 70 micrometers) and the width of a red blood cell (around 8 micrometers).
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Q3. QQC Information About the world
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Q1. What the Quality
Ans. 
Quality in engineering refers to the characteristics of a product or service that meet or exceed customer expectations.
• Quality in engineering involves meeting specifications, standards, and requirements.

• It includes ensuring reliability, durability, and performance of the product or service.

• Quality control measures such as inspections, testing, and audits are used to maintain and improve quality.

• Continuous improvement p...read more
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Q2. What are the steps involved in Quality Control (QQC)?
Ans. 
Quality Control (QC) involves a series of steps to ensure products meet quality standards.
• 1. Establish quality standards and specifications for the product.

• 2. Create a quality control plan outlining inspection procedures and criteria.

• 3. Perform inspections and tests during production to identify defects.

• 4. Implement corrective actions to address any issues found.

• 5. Monitor and evaluate the effectiveness of the quality ...read more
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Q1. Why does Paytm company commit fraud with its agents and why does it not pay the salary of its agents on time? While working in Paytm, why is the salary held and why is the money not given?
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Q2. Why is Paytm merchant not heard? Why is customer care number not reachable?
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Q3. Talking about salary of 18000, why only ₹10000 is given in Paytm. Why is salary held?
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Q4. When will I get my salary? The salary was promised on the 30th but did not come. The salary was promised on the 5th but did not come. Today is the 9th. When will my salary come? Why has my salary been put ...read more
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Q5. How can the team leaders and HR at Paytm be so careless? Why is no one's salary being paid? Why is their salary being withheld?
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Q1. Basic question on the tool I use in previous company and ask question on the components of it.
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Q1. More on what is my role and managerial round.
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Q1. 2 hour long interview with a panel of 4. Possibly every single question that can be asked and repeatedly same things. They tried understanding the process and functions elaborately way too much which was ...read more
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Q1. Everything was already asked. But they need to drench and waste time of the candidate and themselves so they set up another round of technical to ask the same questions again and again.
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The Aptitude Test session accesses mathematical and logical reasoning abilities

Q1. What is Vlookup
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Q2. Some IF else Question in Excel
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Q3. What does your day in your previous organization look like?
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Q4. Could you share the technical skills you possess?
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Q5. Can you explain what a Pivot Table is?
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Q6. Find the Highest-paid employee in each department along with their salary and department name.
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Data Structures & Algorithms: Make sure you understand common data structures (arrays, linked lists, stacks, queues, trees, graphs, hashmaps) and algorithms (sorting, searching, dynamic programming, etc.).

Problem Solving: Practice solving problems on platforms like LeetCode, HackerRank, or CodeSignal. Focus on optimizing your code, as well as understanding the time and space complexity (Big O notation).

Language Proficiency: Be comfortable with the programming language you're expected to use for the test. Most tests will expect you to code in languages like Python, Java, or C++.

System Design: For more senior roles, system design questions may be part of the interview. Practice designing scalable systems and explaining your design decisions.

In a group discussion for a job, the goal is often to assess your communication skills, teamwork, problem-solving abilities, and how well you can present your ideas while considering others’ viewpoints. Here are some tips to excel in a group discussion:

1. Understand the Topic
If the topic is provided in advance, research it thoroughly. Understand the key points and perspectives.
If the topic is given on the spot, take a moment to organize your thoughts before speaking. Think about the main ideas and structure your points clearly.
2. Listen Actively
Pay attention to what others are saying. This helps you respond meaningfully and prevents you from repeating points already made.
Nod and make eye contact to show you're engaged.
3. Speak Clearly and Confidently
Be concise. Don’t go on for too long, as group discussions typically have time limits.
Avoid speaking too fast. Clearly articulate your points so everyone can understand you.
4. Be Assertive, Not Aggressive
Express your opinions confidently but respect others’ viewpoints. Being polite and diplomatic goes a long way.
If you disagree with someone, do so respectfully and offer a constructive alternative.
5. Encourage Others
Don’t dominate the conversation. Allow others to speak and acknowledge their points.
If someone is struggling to speak, you can gently invite them to share their thoughts.
6. Stay on Topic
Stick to the subject and avoid going off on tangents. If the discussion strays, politely steer it back to the main topic.
7. Summarize Key Points
If possible, try to summarize the discussion toward the end, tying together the key ideas that have been raised.
A strong conclusion can leave a positive impression.
8. Be Professional
Dress appropriately and maintain a professional attitude throughout the discussion.
Show respect for time. Don’t interrupt others and avoid speaking over people.
9. Keep a Positive Attitude
Stay calm and composed, even if you disagree with something or if the discussion gets heated.
Would you like tips specific to a particular kind of group discussion (e.g., on current affairs, technical topics, or problem-solving scenarios

Q1. Can you describe your current roles and responsibilities?
Ans. 
I am currently responsible for leading a team of data scientists, developing and implementing data-driven strategies, and ensuring the quality and accuracy of data analysis.
• Leading a team of data scientists

• Developing and implementing data-driven strategies

• Ensuring quality and accuracy of data analysis
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Q2. What are the technical details of one of your projects?
Ans. 
Developed a predictive model for customer churn using machine learning algorithms.
• Used Python for data preprocessing and model building

• Applied techniques like feature engineering and hyperparameter tuning

• Evaluated model performance using metrics like accuracy, precision, and recall
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Q1. What is the loss function used in XGBoost?
Ans. 
The loss function used in XGBoost is typically the gradient boosting algorithm.
• XGBoost uses the gradient boosting algorithm to minimize the loss function

• Common loss functions include regression loss functions like squared error and logistic loss for classification

• Users can also define custom loss functions in XGBoost
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Q2. Logical puzzle question
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Q1. What are your professional aspirations?
Ans. 
My professional aspiration is to lead a team of data scientists to drive impactful insights and innovations.
• Lead a team of data scientists to tackle complex problems

• Drive impactful insights and innovations through data analysis

• Continuously learn and stay updated on the latest trends in data science

• Collaborate with cross-functional teams to implement data-driven solutions
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Q2. Puzzle question
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Q3. Mathematical series question
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Q1. What is the reason for leaving your current organization?
Ans. 
Seeking new challenges and growth opportunities in a more innovative environment.
• Desire for new challenges and growth opportunities

• Seeking a more innovative work environment

• Looking to expand skill set and knowledge in data science
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Q2. What are your reasons for wanting to join IDFC?
Ans. 
I am excited about the opportunity to contribute my data science skills to IDFC's innovative projects and make a meaningful impact.
• Excited about contributing data science skills to innovative projects at IDFC

• Opportunity to make a meaningful impact through data-driven solutions

• Interested in working with a reputable organization like IDFC
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Q3. What are your strengths and weaknesses?
Ans. 
My strengths include strong analytical skills and attention to detail. My weaknesses include a tendency to overthink and difficulty delegating tasks.
• Strengths: strong analytical skills

• Strengths: attention to detail

• Weaknesses: tendency to overthink

• Weaknesses: difficulty delegating tasks
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The aptitude test lasts 30 minutes and focuses on topics relevant to data engineering, including Spark, SQL, Azure, and PySpark.

The coding test is a one-hour examination on PySpark.

Q1. What is the difference between Cache() and Persist()?
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Q2. What does the purpose of the Spark Submit command in Apache Spark?
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Q3. What are window functions in SQL?
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Q1. Could you provide more details about the daily responsibilities associated with this role?
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Q2. How would you describe your work culture?
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It's walkin, so they conducted 1 technical mcqs round.

Q1. Multi threading
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Q2. Internal working of hashmap
Ans. 
HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap uses an array of buckets to store key-value pairs.

• Keys are hashed to determine the index in the array where the key-value pair will be stored.

• In case of hash collisions, a linked list or a balanced tree is used to store multiple key-value pairs in the same bucket.

• HashMap allows null keys...read more
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Q3. Spring batch related
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Q4. Non repeating characters in a array
Ans. 
Function to find and return all non-repeating characters in an array of strings.
• Iterate through the array and count the occurrences of each character using a HashMap.

• Then iterate through the array again and check if the count of each character is 1, if so add it to the result list.

• Return the list of non-repeating characters.
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Q5. 3rd highest salary
Ans. 
To find the 3rd highest salary in a database, we can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
• Use a SQL query with 'ORDER BY salary DESC' to sort the salaries in descending order.

• Use 'LIMIT 1 OFFSET 2' to skip the first two highest salaries and retrieve the third highest salary.

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;
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Q6. Qualifier vs primary
Ans. 
A qualifier in Java is used to specify additional information about a primary, which is the main data type or variable.
• A primary in Java is the main data type or variable, while a qualifier provides additional information about the primary.

• Qualifiers can be used to modify the behavior or characteristics of a primary.

• For example, in Java, 'final' is a qualifier that can be used to make a variable constant.
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Q7. Controller vs restcontroller
Ans. 
The main difference is that @RestController is a specialized version of @Controller that is used for RESTful web services.
• Both @Controller and @RestController are used in Spring MVC to handle HTTP requests, but @RestController is specifically used for RESTful web services.

• @Controller is used to create web pages, while @RestController is used to return data in JSON or XML format.

• @RestController is a convenience annotati...read more
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Q8. Spring boot annotataions
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Q9. Oops concepts with examples
Ans. 
OOP concepts include inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class Dog extends Animal.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables with public getter and setter methods.

• Polymorphism: Ability for objects to be treated as instances of their paren...read more
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Q10. Spring batch configuration
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Q11. They covered all java, spring and Microservices
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Q1. Microservices architecture
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Q2. How do Microservices communicate
Ans. 
Microservices communicate with each other through various communication protocols like HTTP, messaging queues, and gRPC.
• Microservices can communicate over HTTP using RESTful APIs.

• Messaging queues like RabbitMQ or Kafka can be used for asynchronous communication between microservices.

• gRPC is a high-performance, open-source RPC framework that can be used for communication between microservices.

• Service discovery mechanism...read more
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Q3. How to access the Microservice end point
Ans. 
Microservice endpoints can be accessed using HTTP requests with the appropriate URL
• Use HTTP methods like GET, POST, PUT, DELETE to interact with the microservice

• Construct the URL with the base URL of the microservice and the specific endpoint path

• Include any necessary headers or parameters in the request for authentication or data filtering
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Q4. Why we use microservices
Ans. 
Microservices allow for modular, scalable, and flexible software development by breaking down applications into smaller, independent services.
• Microservices enable easier maintenance and updates as each service can be developed, deployed, and scaled independently.

• They improve fault isolation, as failures in one service do not necessarily affect the entire application.

• Microservices promote agility and faster time-to-mark...read more
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Q1. What is the potential of artificial intelligence (AI)?
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Q2. What is advanced Excel?
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Q3. What is the Hardwear Installation
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Q4. What is the software installation process
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Q5. Different between Software and Hardware
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