Stefanini Storage Backup Administrator Interview Questions and Answers

90 min MCQ +coding test on hackerrank.

Q1. Sort colors DSA question
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Q2. Detect cycle in a linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect cycle in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at some point, there is a cycle in the linked list.
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Q1. Was asked about why you want to join the company,my experience etc.
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Q1. All the questions on OOPS, Shell script, linux, c, C++, database
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Q1. Advanced questions on above areas
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Coding question, reasoning, english, math, very easy

Q1. Tell me about yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring Boot, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment

• Passionate about learning new technologies
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Q2. Technical experties and final year project
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Aptitude questions followed by two coding questions.

Two coding questions followed by a discussion on projects.

Three coding questions and inquiries related to Data Structures and Algorithms (DSA), Object-Oriented Programming (OOP), and project-related topics.

Solely 2 coding question

Q1. Difference between composition and aggregation
Ans. 
Composition is a strong relationship where the child object does not exist independently of the parent object, while aggregation is a weak relationship where the child object can exist independently of the parent object.
• Composition is a 'has-a' relationship, where the child object is part of the parent object.

• Aggregation is a 'has-a' relationship, where the child object is not part of the parent object and can exist in...read more
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Aptitude and techical

Q1. SQL queries and coding questions on java
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Q2. Oops topic and puzzles
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Q1. Write a program Binary Search?
Ans. 
Binary search is a divide and conquer algorithm that efficiently finds the target value within a sorted array.
• Start by defining the low and high indices of the array.

• Calculate the middle index and compare the target value with the middle element.

• If the target value is less than the middle element, search the left subarray. If greater, search the right subarray.

• Repeat the process until the target value is found or the s
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Q2. What isCICD flow?
Ans. 
CI/CD flow stands for Continuous Integration/Continuous Deployment flow, which is a software development practice where code changes are automatically built, tested, and deployed.
• CI/CD flow involves automating the process of integrating code changes into a shared repository, running automated tests, and deploying the changes to production.

• Continuous Integration (CI) focuses on automating the build and testing of code c...read more
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Q3. How to handle Enum feature?
Ans. 
Enums are a feature in programming languages that allow you to define a set of named constants.
• Enums can be used to improve code readability by giving meaningful names to values

• Enums can be used in switch statements to handle different cases

• Enums can have associated values or raw values for more flexibility
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Q4. Singleton handles the Syncronized ?
Ans. 
Yes, Singleton handles synchronization by ensuring only one instance of a class is created and providing global access to that instance.
• Singleton pattern restricts the instantiation of a class to one object.

• It provides a global point of access to the instance.

• Synchronization can be implemented in the Singleton pattern to ensure thread safety.

• Example: Singleton pattern is commonly used in database connections to ensure
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Q5. What are external Libraries are used in project?
Ans. 
External libraries are pre-written code that can be imported and used in a project to provide additional functionality.
• External libraries help in reducing development time by providing ready-made solutions for common tasks.

• Examples include React for front-end development, NumPy for scientific computing in Python, and Retrofit for making network calls in Android apps.
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