Zopper Senior Software Engineer Interview Questions and Answers

A company designed the test basically to understand the nature of the interviewee. Simple test.

Q1. OOP Questions like inheritance, polymorphism, etc.
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Q1. Scenario based questions to test our experience.
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Q1. Technical questions and puzzles.
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Round duration - 60 Minutes
Round difficulty - Hard

Q1. 
Prime Numbers within a Range
Given an integer N, determine and print all the prime numbers between 2 and N, inclusive.
Input:
Integer N
Output:
Prime numbers printed on separate lines
Example:
Input...read more
Ans. 
Generate and print all prime numbers between 2 and N, inclusive.
• Iterate from 2 to N and check if each number is prime

• A prime number is only divisible by 1 and itself

• Print each prime number on a new line
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Round duration - 60 Minutes
Round difficulty - Hard

Q1. 
Anagram Substring Search
Given two strings 'STR' and 'PTR', identify all starting indices of 'PTR' anagram substrings in 'STR'. Two strings are anagrams if one can be rearranged to form the other.
Input:
...read more
Ans. 
Implement a function to find all starting indices of anagram substrings of a given string in another string.
• Create a frequency map of characters in the 'PTR' string.

• Use a sliding window approach to check for anagrams in 'STR'.

• Return the starting indices of anagram substrings found.

• Example: For input 'BACDGABCD' and 'ABCD', output should be [0, 5].
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Round duration - 60 Minutes
Round difficulty - Hard

Q1. What are some common testing questions related to Linux and operating systems?
Ans. 
Common testing questions related to Linux and operating systems
• What are the different types of testing that can be performed on a Linux operating system?

• How do you test the compatibility of software with different Linux distributions?

• Can you explain the process of testing kernel modules in a Linux environment?

• What tools and techniques do you use for performance testing on Linux systems?

• How do you ensure the security an...read more
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Q1. 1) OOP Concepts
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Q2. Difference between Abstract class and interface
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any of these.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to provide a common base for multiple classes, while interfaces are used to define a contract for ...read more
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Q3. Mysql Concepts and Mysql queries
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Q4. Logical questions on Array and String Functions in PHP
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Q5. File handling functions such as fread, fopen, fclose etc and logical string function questions on file data.
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Q1. All Scenario based questions
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Q2. OOP Concepts in deep
Ans. 
OOP Concepts refer to the principles of Object-Oriented Programming, including encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways...read more
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Q3. Software design pattern related questions
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Q4. Small Logical programs
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Q5. Database queries in deep
Ans. 
Database queries involve retrieving, updating, and manipulating data stored in a database.
• Database queries are used to retrieve specific data from a database based on certain criteria.

• Queries can also be used to update existing data or insert new data into the database.

• SQL (Structured Query Language) is commonly used to write database queries.

• Examples of database queries include SELECT, INSERT, UPDATE, and DELETE state...read more
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Q1. Core and Advance concepts of Java
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Q1. Mainly on mutltithrerading concepts and previous experience on projects.
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Q1. About projects and scenarios based questions.
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Q1. About Salary negotiation and final round
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