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Question 1. Which of the following is a fundamental programming construct used to store data in a program? A) Loop B) Variable C) Function D) Class Answer: B Explanation: Variables are used to store data in programming, allowing programs to manipulate and retain information during execution. Question 2. Which control statement is most suitable for selecting one of many options based on the value of an expression? A) if-else B) switch C) for loop D) while loop Answer: B Explanation: The switch statement allows selection among multiple options based on the value of an expression, making it ideal for such scenarios. Question 3. Which looping construct executes its body at least once before checking the condition? A) for B) while C) do-while D) foreach Answer: C Explanation: The do-while loop executes its body first and then checks the condition, guaranteeing at least one execution. Question 4. What is the primary purpose of functions in programming?
A) To handle errors B) To encapsulate reusable blocks of code C) To control program flow D) To declare variables Answer: B Explanation: Functions encapsulate reusable code blocks, promoting modularity and code reuse in programs. Question 5. Which principle of Object-Oriented Programming ensures that an object's internal state is hidden from outside access? A) Inheritance B) Polymorphism C) Encapsulation D) Abstraction Answer: C Explanation: Encapsulation hides internal object details, exposing only necessary interfaces and protecting the internal state. Question 6. In OOP, what is an abstract class? A) A class that cannot be instantiated and may contain abstract methods B) A class that implements an interface C) A class with only static methods D) A subclass of an interface Answer: A Explanation: Abstract classes cannot be instantiated directly and may contain abstract methods that must be implemented by subclasses. Question 7. Which data structure is best suited for implementing a last-in, first-out (LIFO) collection? A) Queue B) Stack
Explanation: Big O notation characterizes the upper bound or worst-case performance of an algorithm in terms of time or space complexity. Question 11. Which type of requirement specifies how a system should perform under certain conditions? A) Functional requirement B) Non-functional requirement C) User requirement D) Business requirement Answer: B Explanation: Non-functional requirements define system qualities like performance, scalability, and security, specifying how the system should behave. Question 12. Which diagram is commonly used in requirements analysis to model system entities and their relationships? A) Use Case Diagram B) Class Diagram C) ER Diagram D) Data Flow Diagram Answer: C Explanation: ER (Entity-Relationship) diagrams model data entities and their relationships, aiding in database design. Question 13. Which design principle emphasizes that a module should have one, and only one, reason to change? A) Cohesion B) Separation of Concerns C) Single Responsibility Principle D) Open/Closed Principle Answer: C
Explanation: The Single Responsibility Principle states that a class/module should have only one reason to change, promoting maintainability. Question 14. Which architectural pattern separates an application into client and server components communicating over a network? A) Monolithic B) Microservices C) Client-Server D) Layered Answer: C Explanation: The Client-Server pattern divides functionality between clients and servers, facilitating distributed systems. Question 15. Which creational design pattern ensures a class has only one instance and provides a global point of access? A) Factory Method B) Singleton C) Builder D) Prototype Answer: B Explanation: The Singleton pattern restricts instantiation to a single object, providing a global access point. Question 16. Which structural design pattern allows objects with incompatible interfaces to work together? A) Adapter B) Decorator C) Proxy D) Bridge Answer: A
Question 20. Which UI principle advocates designing interfaces that are easy to use and understand? A) Aesthetics B) Usability C) Performance D) Security Answer: B Explanation: Usability focuses on creating interfaces that are intuitive, efficient, and satisfying for users. Question 21. Which programming paradigm emphasizes functions as first-class citizens and avoids mutable state? A) Object-Oriented B) Procedural C) Functional D) Imperative Answer: C Explanation: Functional programming treats functions as first-class objects and emphasizes immutability and pure functions. Question 22. Which IDE feature allows developers to step through code to diagnose issues? A) Code completion B) Debugger C) Syntax highlighting D) Version control integration Answer: B Explanation: The debugger enables step-by-step execution to identify bugs and understand program flow. Question 23. Which version control operation combines changes from different branches? A) Commit
B) Merge C) Revert D) Checkout Answer: B Explanation: Merging integrates changes from one branch into another, resolving potential conflicts. Question 24. Which frontend technology enables building user interfaces with reusable components? A) React B) Node.js C) Django D) Spring Boot Answer: A Explanation: React is a JavaScript library that facilitates creating modular, reusable UI components. Question 25. Which backend framework is based on Java and promotes dependency injection and aspect-oriented programming? A) Django B) Ruby on Rails C) Spring Boot D) Express Answer: C Explanation: Spring Boot is a Java framework that uses dependency injection and supports aspect- oriented programming for building applications. Question 26. Which SQL command is used to retrieve data from a database? A) INSERT B) UPDATE C) SELECT D) DELETE
Question 30. Which framework is commonly used for automated UI testing? A) JUnit B) Selenium C) Mocha D) Pytest Answer: B Explanation: Selenium automates browser interactions, enabling UI testing across different browsers. Question 31. Which phase of the SDLC involves planning, defining requirements, and designing the system? A) Implementation B) Maintenance C) Analysis and Design D) Testing Answer: C Explanation: The analysis and design phase involves understanding requirements and creating system designs. Question 32. Which Agile methodology emphasizes continuous delivery with a focus on workflow visualization and limiting work in progress? A) Scrum B) Kanban C) Waterfall D) Spiral Answer: B Explanation: Kanban visualizes work and limits WIP, promoting continuous flow and efficiency. Question 33. Which project management process involves estimating time, cost, and resources needed? A) Risk Management B) Scheduling
C) Planning D) Stakeholder Management Answer: C Explanation: Planning involves estimating and organizing resources, timeframes, and costs for project success. Question 34. Which ethical issue pertains to the unauthorized use of someone else's intellectual property? A) Data privacy breach B) Plagiarism C) Intellectual property infringement D) Data security violation Answer: C Explanation: Infringement of intellectual property rights involves unauthorized use or reproduction of protected works. Question 35. Which concept describes a system's ability to recover from failures and continue operation? A) Scalability B) Resilience C) Security D) Maintainability Answer: B Explanation: Resilience is a system's capacity to recover quickly from failures and maintain functionality. Question 36. Which cloud deployment model provides resources over the internet on a pay-as-you-go basis without owning physical infrastructure? A) IaaS B) PaaS C) SaaS
Explanation: Shift-left testing involves starting testing activities early to detect defects sooner. Question 40. Which testing technique involves testing with invalid or unexpected inputs to ensure stability? A) Boundary Value Analysis B) Equivalence Partitioning C) Negative Testing D) Decision Table Testing Answer: C Explanation: Negative testing checks system behavior with invalid or unexpected inputs to verify robustness. Question 41. Which framework is commonly used for unit testing in Python? A) JUnit B) NUnit C) Pytest D) Mocha Answer: C Explanation: Pytest is a popular testing framework for Python, enabling simple and scalable unit tests. Question 42. In defect management, what is the primary purpose of root cause analysis? A) To document defects B) To identify the underlying cause of defects C) To assign defects to team members D) To prioritize defect fixing Answer: B Explanation: Root cause analysis aims to identify the fundamental reason for defects to prevent recurrence. Question 43. Which static analysis tool is used to enforce coding standards and detect potential bugs?
A) Compiler B) Linter C) Debugger D) Profiler Answer: B Explanation: Linters analyze source code to enforce coding standards and identify potential issues. Question 44. Which continuous integration tool is widely used to automate building and testing code repositories? A) Jenkins B) Docker C) Kubernetes D) Maven Answer: A Explanation: Jenkins automates building, testing, and deploying code, facilitating continuous integration. Question 45. Which container technology allows for creating lightweight, portable, and consistent development environments? A) Virtual Machines B) Docker C) Hyper-V D) VMware Answer: B Explanation: Docker provides containerization, enabling portable and consistent environments across systems. Question 46. Which cloud service model provides a platform allowing customers to develop, run, and manage applications without managing underlying infrastructure? A) IaaS B) PaaS
Explanation: The Spiral model combines iterative development with risk assessment at each cycle. Question 50. Which project management methodology emphasizes visualizing work and limiting work in progress? A) Scrum B) Kanban C) Waterfall D) V-Model Answer: B Explanation: Kanban focuses on visual workflow and limiting WIP to improve flow and transparency. Question 51. Which of the following best describes the concept of "separation of concerns" in software design? A) Modularizing code into distinct sections each handling a specific aspect B) Combining related functionalities into a single component C) Avoiding dependencies between modules D) Securing data with encryption Answer: A Explanation: Separation of concerns involves dividing a system into distinct features or modules to improve maintainability. Question 52. Which type of NoSQL database is optimized for storing and querying graph-structured data? A) Document Database B) Key-Value Store C) Column-Family Database D) Graph Database Answer: D Explanation: Graph databases are designed for efficient storage and querying of graph-structured data, ideal for network relationships.
Question 53. Which principle of good UI design emphasizes consistency and predictability in interface elements? A) Aesthetics B) Usability C) Consistency D) Accessibility Answer: C Explanation: Consistency ensures users can predict interface behavior, leading to easier navigation and understanding. Question 54. Which programming language is primarily object-oriented and widely used for enterprise applications on the JVM? A) Python B) C++ C) Java D) JavaScript Answer: C Explanation: Java is an object-oriented language heavily used for enterprise applications on the Java Virtual Machine. Question 55. Which version control operation creates a new branch for parallel development? A) commit B) branch C) merge D) checkout Answer: B Explanation: The branch operation creates a new branch, allowing developers to work on features independently.
C) Lock D) All of the above Answer: D Explanation: Mutexes, locks, and semaphores are synchronization primitives to control concurrent access to shared resources. Question 60. Which security standard is used for securing API access token exchange? A) OAuth B) SSL C) TLS D) SAML Answer: A Explanation: OAuth is an open standard for token-based authorization, commonly used for API security. Question 61. Which testing type verifies the complete system against specified requirements? A) Unit Testing B) Integration Testing C) System Testing D) Regression Testing Answer: C Explanation: System testing evaluates the entire system to ensure it meets specified requirements. Question 62. Which test design technique involves dividing input data into equivalent partitions to reduce test cases? A) Boundary Value Analysis B) Equivalence Partitioning C) Decision Table Testing D) State Transition Testing Answer: B
Explanation: Equivalence Partitioning divides data into classes where test cases are representative of each class. Question 63. Which framework is primarily used for end-to-end testing of web applications? A) JUnit B) Selenium C) Mocha D) Pytest Answer: B Explanation: Selenium automates browser actions to facilitate end-to-end testing of web applications. Question 64. In the context of DevOps, what does "Infrastructure as Code" (IaC) enable? A) Manual infrastructure setup B) Automated provisioning and management of infrastructure C) Static server configurations D) Manual deployment scripts Answer: B Explanation: IaC allows infrastructure to be managed and provisioned through machine-readable code, enabling automation. Question 65. Which cloud service model provides ready-to-use applications over the internet? A) IaaS B) PaaS C) SaaS D) CaaS Answer: C Explanation: SaaS delivers fully managed applications accessible via the internet, eliminating the need for local installation.
