Bizsolindia Services Interview Questions and Answers for Freshers

First round is written test, in that return test asking oops concepts programs, array program and SQL table creation.

Q1. Explain oops concepts.
Ans. 
OOPs concepts refer to the principles of Object-Oriented Programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implemen...read more
Answered by AI
Add your answer
Q2. Difference between Linkedlist and Arraylist.
Ans. 
Linkedlist is a data structure where elements are stored in nodes with pointers to the next node. Arraylist is a dynamic array that can grow or shrink in size.
• Linkedlist allows for efficient insertion and deletion of elements anywhere in the list, while Arraylist is faster for accessing elements by index.

• Linkedlist uses more memory due to the overhead of storing pointers, while Arraylist uses contiguous memory for elem...read more
Answered by AI
Add your answer
Q3. What's abstraction?
Ans. 
Abstraction is the concept of hiding complex implementation details and showing only the necessary features of an object or system.
• Abstraction allows us to focus on what an object does rather than how it does it

• It helps in reducing complexity and improving efficiency

• For example, a car dashboard abstracts the internal workings of the car and provides only essential information like speed and fuel level
Answered by AI
Add your answer
Q4. Explain joins in sql.
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN re...read more
Answered by AI
Add your answer

Q1. Explain the project.
Add your answer
Q2. They tell someone situations and asking the answer.
Add your answer

Machine coding round

Q1. About projects, like the what stack used
Add your answer
Q2. Hr question about why to join browserstack
Add your answer

Q1. Coding question: Find the longest consecutive increasing sequence in an array
Ans. 
Find the longest consecutive increasing sequence in an array of strings.
• Iterate through the array and keep track of the current consecutive sequence length

• Update the longest consecutive sequence length as you iterate

• Return the longest consecutive sequence found
Answered by AI
Add your answer
Q2. Coding question: Find the 2nd lowest and 2nd highest elements in an array
Ans. 
Find 2nd lowest and 2nd highest elements in an array of strings
• Convert the array of strings to an array of integers for comparison

• Sort the array in ascending order to find the 2nd lowest element

• Sort the array in descending order to find the 2nd highest element
Answered by AI
Add your answer

Q1. Submit a 2-3 minutes self made video covering the topics: (a) Journey from childhood to college (b) Why do you think you are a good fit for this role? (c) Accomplishments in college other than general acad...read more
Add your answer

Two assignments were given which included instructions to solve those assignments.

1. First assignment involved creating a data pipeline to transport a Google Sheet data (provided by them) into Snowflake data warehouse.

2. Second assignment involved hosting a website using docker CLI. The steps and the webpage to be hosted were provided but some intentional errors were added. We had to resolve those errors and submit the output.

Q1. Explain your journey from childhood to your college.
Add your answer
Q2. Are you a single child? What are the advantages and disadvantages of being or not being a single child?
Add your answer
Q3. Feedback about the whole recruitment process
Add your answer
Q4. How informative did you find the Pre Placement Talk?
Add your answer
Q5. Write few lines about your hometown
Add your answer
Q6. The interviewer asked one technical question as well in this round: What is the difference between == and === operators?
Add your answer
Q7. If tomorrow, a company comes with a higher package and you have the offer from Hevo Data, how would you decide?
Add your answer

Aptitude was including both MCQs and Input

Q1. Technical interview 1 It revolved around core subjects Like OS, Oops, CNS, dbms etc,. And few basic questions on arrays
Add your answer
Q2. Difference between python and C
Ans. 
Python is a high-level, interpreted language known for its simplicity and readability, while C is a low-level, compiled language known for its speed and efficiency.
• Python is dynamically typed, while C is statically typed.

• Python has automatic memory management, while C requires manual memory management.

• Python is platform-independent, while C is platform-dependent.

• Python is commonly used for web development and data anal...read more
Answered by AI
Add your answer
Q3. Why C is faster than python
Ans. 
C is faster than Python due to its lower-level nature and direct hardware access.
• C is a compiled language, while Python is an interpreted language.

• C code is directly translated into machine code, while Python code is executed line by line.

• C has direct access to hardware, while Python relies on external libraries for such access.
Answered by AI
Add your answer
Q4. Write a program to count vowels in your name
Ans. 
A program to count vowels in a given name
• Create a function that takes a string as input

• Loop through each character in the string and check if it is a vowel (a, e, i, o, u)

• Increment a counter for each vowel found

• Return the total count of vowels
Answered by AI
Add your answer

Q1. Technical interview 2 Focuses on DSA
Add your answer
Q2. Write quick sort
Ans. 
Quick sort is a divide-and-conquer algorithm that sorts an array by partitioning it into smaller sub-arrays.
• Choose a pivot element from the array

• Partition the array into two sub-arrays based on the pivot element

• Recursively apply quick sort to the sub-arrays

• Combine the sorted sub-arrays to get the final sorted array
Answered by AI
Add your answer
Q3. Implement Linked list
Ans. 
Implement a linked list data structure in a programming language.
• Create a Node class with data and a reference to the next node

• Implement methods to add, remove, and search for elements in the linked list

• Handle edge cases like adding to an empty list or removing the last element
Answered by AI
Add your answer
Q4. All operations on Linked list
Ans. 
Operations on Linked list include insertion, deletion, traversal, and searching.
• Insertion: Add a new node at the beginning, end, or middle of the linked list.

• Deletion: Remove a node from the linked list based on a given key or position.

• Traversal: Visit each node in the linked list to perform operations or display data.

• Searching: Find a specific node in the linked list based on a given key or value.
Answered by AI
Add your answer
Q5. Basic machine learning algorithms
Add your answer

Q1. Basic fitment questions
Add your answer
Q2. Introduction and flexibility
Add your answer

MCQ based on quant , reasoning and computer science fundamentals(oops,DBMS,CN) and 3 coding question

Q1. DSA question on trees and linkedlist , alond with some SQL querys and questions on OOPS
Add your answer

Q1. More DSA question on recursion(TOH) and dynamic programming, in depth discussion on projects and some SQL queries.
Add your answer

Q1. One DSA question on stack implementation, 2 SQL queries , basic computer fundamental question , standard HR question about company , family, were do you see yourself after 5 years
Add your answer

Some Objective questions and 1 Coding Questions

Q1. Situation based questions on Coroutines
Add your answer
Q2. About Project Tech Stack Used and Questions on that
Add your answer

There were 3 questions in the online assessment.

1 - Binary Search
2 - DP
3 - Graphs

Q1. Implement a persistence stack with constant time operations
Ans. 
Implement a persistence stack with constant time operations
• Use a combination of a stack and a hashmap to achieve constant time operations for push, pop, and get operations

• Maintain a stack to store the elements and a hashmap to store the index of each element in the stack

• When pushing an element, add it to the stack and update its index in the hashmap

• When popping an element, remove it from the stack and also remove its i...read more
Answered by AI
Add your answer

Q1. Median of two sorted arrays and OOPs basics
Ans. 
Finding the median of two sorted arrays and discussing OOPs basics
• To find the median of two sorted arrays, merge the arrays and then calculate the median

• OOPs basics include concepts like encapsulation, inheritance, polymorphism, and abstraction

• Example: Median of [1, 3] and [2] is 2.0
Answered by AI
Add your answer