Bristlecone Interview Questions and Answers

Basic aptitude questions were there from all the topics

One topic was given to each group of 12 members and 1 minute to think. Mine topic was Is AI good or bad?

Q1. First interviewer introduced himself then he asked to explain about yourself
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Q2. Projects that I had mentioned in my resume
Ans. 
I have worked on projects involving data analysis and visualization using Python and SQL.
• Developed Python scripts to clean and analyze large datasets

• Created interactive dashboards using Tableau for data visualization

• Utilized SQL queries to extract and manipulate data from databases
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Q3. Python basic questions and questions related to project based on it
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Q4. Internship explanation and follow up questions based on it
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Q5. Problem-solving started by array basic questions then moving on linked list 2 questions were asked on it.
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Q1. After first round I was referred to the other panel for AI skill set role, he asked what your core area of interest is and what tech stack you like the most
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Q2. Then he gave a look on my projects and then on skills mentioned in resume. Then started with SQL questions like keys difference between foreign key and primary key then joins I I had explained all types th...read more
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Q3. Then question were asked on python basics like difference between tuple and dictionaries, numpy and pandas library, basic coding question to be written in python
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Q1. What are the new features introduced in Java 8?
Ans. 
Java 8 introduced significant features like lambdas, streams, and the new Date-Time API, enhancing productivity and code clarity.
• Lambda Expressions: Allow you to write concise and functional-style code. Example: (a, b) -> a + b.

• Streams API: Facilitates functional-style operations on collections, enabling operations like filter, map, and reduce. Example: list.stream().filter(x -> x > 10).collect(Collectors.toLi...read more
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Q2. How to implement a thread-safe singleton class?
Ans. 
A thread-safe singleton class ensures that only one instance exists, even in multi-threaded environments, preventing race conditions.
• Eager Initialization: Create the singleton instance at the time of class loading. Example: 'private static final Singleton INSTANCE = new Singleton();'

• Lazy Initialization with Synchronization: Use synchronized method to create instance only when needed. Example: 'public synchronized stati...read more
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Q3. What is completable future
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CompletableFuture is a class in Java that provides a way to write asynchronous, non-blocking code with a fluent API.
• Asynchronous Programming: CompletableFuture allows you to run tasks asynchronously, enabling better resource utilization and responsiveness.

• Chaining: You can chain multiple asynchronous tasks using methods like thenApply, thenAccept, and thenRun, allowing for a clear flow of operations.

• Exception Handling:...read more
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Q4. If you are given custom starte. how will you add it alongwith normal Spring starter
Ans. 
Integrating a custom Spring starter with existing Spring starters enhances modularity and reusability in applications.
• Create Custom Starter: Develop a new Spring Boot starter by creating a Maven or Gradle project that includes necessary dependencies and configurations.

• Define Auto-Configuration: Implement an auto-configuration class in your custom starter to define beans and configurations that will be automatically app...read more
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Q5. Explain architecture for current project
Ans. 
The architecture of the current project is a microservices-based system designed for scalability and maintainability.
• Microservices Architecture: The project is divided into small, independent services that can be developed, deployed, and scaled independently.

• API Gateway: An API gateway is used to manage requests from clients, routing them to the appropriate microservice, enhancing security and performance.

• Database per ...read more
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Q6. Api gateway, resilience, rate limiting
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Topic was Impact of AI

Q1. Sql joins question
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Q2. Types of joins in sql
Ans. 
Types of joins in SQL include inner join, left join, right join, and full outer join.
• Inner join: returns rows when there is a match in both tables

• Left join: returns all rows from the left table and the matched rows from the right table

• Right join: returns all rows from the right table and the matched rows from the left table

• Full outer join: returns rows when there is a match in either table
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Q1. Where do you see yourself in 5 years
Ans. 
In five years, I envision myself as a skilled professional, contributing to my field and pursuing continuous growth and learning.
• I aim to have completed my degree and gained relevant work experience in my field.

• I see myself in a role where I can lead projects and mentor others, like managing a team in a healthcare setting.

• I plan to pursue further education or certifications to enhance my expertise, such as a specialize...read more
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Q2. Strength weakness
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Q1. Write to print even and odd by thread
Ans. 
Print even and odd numbers using two threads
• Create two threads, one for printing even numbers and one for printing odd numbers

• Use synchronization mechanisms like mutex or semaphore to ensure proper ordering of numbers

• Example: Thread 1 prints even numbers (2, 4, 6, ...) and Thread 2 prints odd numbers (1, 3, 5, ...)
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Q2. Write to print string in C style array
Ans. 
Use a loop to print each character of the string in C style array format
• Declare an array of characters with the string length + 1 for null terminator

• Use a loop to copy each character of the string into the array

• Add a null terminator at the end of the array to signify the end of the string
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Q3. Architecture for project
Ans. 
The architecture for the project should be scalable, modular, and well-documented.
• Use a microservices architecture to break down the project into smaller, independent services.

• Implement a RESTful API for communication between services.

• Utilize containerization with Docker for easy deployment and scalability.

• Consider using a message broker like Kafka for asynchronous communication between services.

• Document the architectu...read more
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Q4. Write to print string by passing char*
Ans. 
Use a loop to print each character of the string passed as a char* parameter.
• Use a for loop to iterate through each character of the char* parameter.

• Print each character using printf or cout.

• Ensure to handle the null terminator at the end of the string.
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Q5. Rest api library
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