QualityKiosk Technologies Interview Questions and Answers

First group discussion round and after that there will be Aptitude test . Very poor company they don't have PC's for the candidates to give test .They will say you go home and give test .

Q1. What is stack and Queue?
Ans. 
Stack is a data structure that follows Last In First Out (LIFO) principle. Queue is a data structure that follows First In First Out (FIFO) principle.
• Stack: LIFO principle, push and pop operations, examples - browser history, function call stack

• Queue: FIFO principle, enqueue and dequeue operations, examples - printer queue, message queue
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Q2. Difference between Error and Exception?
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Q3. Write a Program to reverse the String?
Ans. 
Program to reverse a string
• Use a loop to iterate through the characters of the string

• Append each character to the beginning of a new string

• Return the reversed string
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Q4. Testing Question What is defect ?
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Q5. Explain OOPS ?
Ans. 
OOPS stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.
• OOPS focuses on creating objects that contain data and methods to manipulate that data.

• It allows for encapsulation, inheritance, and polymorphism.

• Example: Inheritance - a class 'Dog' can inherit traits from a class 'Animal'.
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The assessment consists of a one-hour aptitude test that includes questions on data structures and algorithms (DSA) as well as SQL query questions, where I am required to write SQL queries, followed by two coding questions.

Our group discussion topic is whether AI can replace human intelligence.

Q1. Oops concept in java
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Q2. What is compile time polymorphism
Ans. 
Compile time polymorphism is the ability of a programming language to select which method to execute at compile time based on the method signature.
• Compile time polymorphism is achieved through method overloading and operator overloading.

• Method overloading allows multiple methods in the same class with the same name but different parameters.

• The compiler determines which method to call based on the number and type of arg...read more
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Q3. What is the SQL query to select and display the name of person who have highest salary among employees?
Ans. 
SQL query to select and display the name of person with highest salary among employees.
• Use the MAX() function to find the highest salary

• Join the employee table with the salary table using a common key like employee_id

• Select the name of the person with the highest salary
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Q1. Tell me about yourself. then about final year project.
Ans. 
I am a dedicated QA Automation Testing Engineer with experience in creating and executing test cases. My final year project involved developing a test automation framework using Selenium.
• Experienced QA Automation Testing Engineer

• Skilled in creating and executing test cases

• Developed test automation framework using Selenium for final year project
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Q2. What is your family background, and are you prepared to relocate?
Ans. 
I come from a close-knit family with a diverse background. I am open to relocating for the right opportunity.
• Family background is close-knit and diverse

• Open to relocating for the right opportunity
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Q1. What is the difference between JDK, JVM, and JRE?
Ans. 
JDK is the development kit, JRE is the runtime environment, and JVM is the virtual machine for executing Java applications.
• JDK (Java Development Kit): A complete toolkit for developing Java applications, including the compiler (javac) and libraries.

• JRE (Java Runtime Environment): Provides the libraries and components necessary to run Java applications, but does not include development tools.

• JVM (Java Virtual Machine): ...read more
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Q2. What are the differences between Java and C++?
Ans. 
Java is platform-independent and object-oriented, while C++ is platform-dependent and supports both procedural and object-oriented programming.
• Java is platform-independent due to the Java Virtual Machine (JVM), while C++ is platform-dependent and compiled directly to machine code.

• Java uses automatic garbage collection, whereas C++ requires manual memory management using 'new' and 'delete'.

• Java supports single inheritan...read more
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Q3. TYPES OF EXCEPTION : IOException, FileNotFoundException, ClassNotFoundException
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Q4. DIFFERENT TYPES OF CLASS : PUBLIC PRIVATE PROTECTED STATIC
Ans. 
Classes in programming define access levels and behaviors: public, private, protected, and static.
• Public: Accessible from anywhere. Example: 'public class MyClass {}'

• Private: Accessible only within the class. Example: 'private int myVar;'

• Protected: Accessible within the class and subclasses. Example: 'protected void myMethod() {}'

• Static: Belongs to the class rather than instances. Example: 'static int myStaticVar;'
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Q5. What is the definition of try-catch in programming?
Ans. 
Try-catch is a programming construct used to handle exceptions and errors gracefully during code execution.
• Try block: Contains code that may throw an exception.

• Catch block: Contains code that handles the exception if it occurs.

• Example: try { // risky code } catch (Exception e) { // handle exception }

• Multiple catch blocks can be used to handle different types of exceptions.

• Finally block: Optional block that exe...read more
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Q6. What is an overview of our project?
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Q7. What is a hash set in data structures?
Ans. 
A hash set is a data structure that stores unique elements using a hash table for efficient access and retrieval.
• Stores unique elements, preventing duplicates.

• Uses a hash function to compute an index for each element.

• Provides average O(1) time complexity for add, remove, and contains operations.

• Example: Inserting elements {1, 2, 3} results in a hash set with unique values.

• Commonly used in scenarios requiring fast membe...read more
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Q8. What are stacks and queues?
Ans. 
Stacks and queues are abstract data structures that manage collections of elements in specific orders.
• Stack: Last In, First Out (LIFO) structure. Example: Undo feature in text editors.

• Queue: First In, First Out (FIFO) structure. Example: Print job management in printers.

• Stacks use push and pop operations to add and remove elements.

• Queues use enqueue and dequeue operations for adding and removing elements.

• Both can be im...read more
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Q9. What are the reasons behind the banning of the China app in India? GD TOPIC
Ans. 
India banned Chinese apps due to security concerns, data privacy issues, and geopolitical tensions.
• National Security: Concerns over data being accessed by the Chinese government.

• Data Privacy: Apps were accused of mishandling user data and violating privacy norms.

• Geopolitical Tensions: Ongoing border disputes between India and China heightened scrutiny.

• Economic Independence: A push for self-reliance in technology and re...read more
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Q10. What are classes and objects in object-oriented programming?
Ans. 
Classes are blueprints for creating objects, encapsulating data and behavior in object-oriented programming.
• A class defines properties (attributes) and methods (functions) that its objects will have. Example: class Car { int speed; void drive(); }

• An object is an instance of a class. Example: Car myCar = new Car();

• Classes promote code reusability and organization. Example: class Animal { void eat(); } can be inherited b...read more
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Q11. Few program on if else and while loop
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Q12. SQL VS MONGODB
Ans. 
SQL is a structured query language for relational databases, while MongoDB is a NoSQL database for unstructured data.
• Data Structure: SQL uses tables with rows and columns, while MongoDB uses collections and documents (JSON-like format). Example: SQL table vs. MongoDB document.

• Schema: SQL databases have a fixed schema, requiring predefined structure, whereas MongoDB is schema-less, allowing for flexible data models.

• Quer...read more
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Q13. HTML CSS XML HTTP FULL FORMS
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Q14. THROW AND THROWS
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Q15. What is your understanding of APIs (Application Programming Interfaces)?
Ans. 
APIs enable software applications to communicate and interact with each other, facilitating data exchange and functionality integration.
• APIs define a set of rules and protocols for building and interacting with software applications.

• They can be RESTful (using HTTP requests) or SOAP (using XML-based messaging).

• APIs allow different systems to work together, such as a mobile app accessing a web service.

• Example: A weather ...read more
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Q16. What do the status codes 404 and 200 mean in website?
Ans. 
Status codes 404 and 200 indicate the success or failure of a web request.
• 200 OK: The request was successful, and the server returned the requested resource.

• Example: A user accesses a webpage, and the server responds with the page content.

• 404 Not Found: The server cannot find the requested resource, indicating it may not exist.

• Example: A user tries to access a non-existent page, resulting in a 404 error.
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Is India ready for cashless services

Q1. SOL fundamentals knowledge
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Q2. DDL DML difference
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Q3. Join syntax is known
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Q4. Logic gate knowledge
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Q5. Universal logic gate
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Q6. Testing automation
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Q7. Javascript knowledge
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Q1. Self introduction
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Q2. Family background
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Q3. Native place information
Ans. 
I was born and raised in a small town in the countryside, surrounded by nature and close-knit community.
• My native place is a peaceful town with a population of around 10,000 people.

• It is located in the southern part of the country, known for its lush greenery and scenic landscapes.

• The town has a strong sense of community, with annual festivals and events that bring everyone together.

• I have fond memories of playing in t...read more
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Q4. Relocation to Mumbai
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