Back-End Programming Concepts Quiz

1. What does Back End Web Development refer to?

• Designing the user interface of a webpage.
• Writing HTML and CSS for website layout.
• Creating graphics and animations for a site.
• Building the server-side components of a website.

2. Which of the following is NOT a programming language commonly used for Back End Web Development?

• HTML
• Python
• Ruby
• Java

3. What is the role of a back-end developer in a web development team?

• Managing marketing campaigns for the website.
• Creating graphics and visual elements for the site.
• Writing code for server-side functionality.
• Designing the user interface of a website.

4. What is the purpose of a database in Back End Web Development?

• To design the user interface of the website.
• To manage the styling and layout of the website.
• To handle the communication between the server and the client.
• To store and retrieve data required for the website’s front-end.

5. Which programming language is commonly used for server-side scripting and Back End Web Development?

• CSS
• HTML
• PHP
• JavaScript

6. What does API stand for in the context of Back End Web Development?

• Automated Programming Interaction
• Application Performance Indicator
• Application Personal Interface
• Application Programming Interface

7. Which of the following is a primary responsibility of Back End Web Development?

• Developing mobile applications and games.
• Designing user interfaces and layouts.
• Creating animations and transitions.
• Handling user authentication and data storage.

8. What is the role of a web server in Back End Web Development?

• Serving the website’s files and content to users’ browsers.
• Writing CSS styles for web pages.
• Designing the user interface for the website.
• Managing user interactions on the website.

9. How does Back End Web Development interact with Front End Web Development?

• Back End and Front End serve different websites without interaction.
• Back End focuses solely on graphics, while Front End handles database management.
• Back End and Front End work together to create a complete web application, with Back End handling server-side functionality and data, and Front End managing the user interface and interactions.
• Back End development is unrelated to user experience created by Front End.

10. Which of the following technologies is commonly used for real-time applications and chat applications?

• Ruby
• Java
• C++
• Node.js

11. What is the primary purpose of using a caching mechanism in Back End Web Development?

• To provide a backup solution for database contents.
• To convert data formats for user-friendly display.
• To store frequently accessed data temporarily, reducing the need to fetch it from the database repeatedly.
• To permanently delete unnecessary data from the database.

12. How can Back End Web Development improve website security?

• By encrypting sensitive data and using secure authentication methods.
• By adding more images and videos to the site content.
• By increasing the website`s loading speed and performance.
• By enhancing the visual design and layout of the website.

13. What does SQL stand for in the context of Back End Web Development?

• Systematic Query Log
• Structured Query Language
• Standard Query List
• Syntax Query Language

14. How do back-end developers handle user authentication in web applications?

• By sending direct email links for every user action.
• By ignoring user credentials and relying on client-side checks.
• By implementing user registration and login systems with secure authentication methods.
• By using only session cookies for tracking users.

15. What is the role of a framework in Back End Web Development?

• To manage client-side performance and animations.
• To serve static content and images to users.
• To create front-end user interfaces and design elements.
• To provide a structured and efficient environment for building web applications and APIs.

16. How do back-end developers handle data encryption in web applications?

• By writing data to a public HTML file for easy access.
• By using plain text to store passwords for readability.
• By using strong encryption algorithms to protect sensitive data.
• By compressing data before storage to save space.

17. Which of the following is NOT a benefit of using server-side rendering in Back End Web Development?

• Increased server security.
• Better SEO performance.
• Enhanced user interactions and animations.
• Improved page load speed.

18. What are stored procedures, and how can you execute them in C#?

• Stored procedures are scripts written in C# that run on the server. They can be executed using the HttpClient class.
• Stored procedures are database objects used for managing user permissions. They can be executed by calling a specific URL in a web browser.
• Stored procedures are precompiled database queries stored on the database server. They can be executed using the SqlCommand object in C#.
• Stored procedures are files containing HTML and JavaScript for web applications. They can be executed by opening them in a browser.

19. How do you handle transactions in C# when working with databases?

• Transactions in C# are handled using the List class to store temporary data.
• Transactions in C# are handled using the Queue class for asynchronous operations.
• Transactions in C# require manual input for each database operation without any classes.
• Transactions in C# can be handled using the TransactionScope class, ensuring that multiple database operations are executed as a single, atomic unit.

20. What is the concept of caching in C# back-end development, and how can it be implemented?

• Caching in C# involves storing frequently accessed data in memory to improve application performance. It can be implemented using in-memory caching or distributed caching systems like Redis or Memcached.
• Caching is only applicable to client-side applications and cannot be used in back-end.
• Caching involves compressing data files to save disk space on the server.
• Caching refers to permanently storing data in the database for security.

21. What is the role of logging in back-end development, and how can you implement logging in C#?

• Logging is only for storing user data and information. In C#, it is implemented through file writing.
• Logging in back-end development helps diagnose issues and monitor system performance. In C#, logging can be implemented using libraries like NLog or Serilog.
• Logging helps speed up applications and improve load times. It is done using built-in Console methods in C#.
• Logging is used solely for creating user analytics reports. In C#, it is implemented with custom debugging messages.

22. What is the difference between abstract classes and interfaces in C#?

• Interfaces can contain implementations of methods, while abstract classes cannot.
• Abstract classes can implement multiple inheritance, while interfaces provide single inheritance.
• Abstract classes can have both abstract and non-abstract methods, while interfaces can only have method signatures.
• Abstract classes are used only for data storage, while interfaces are strictly for methods.

23. Explain the concept of garbage collection in C#.

• Garbage collection in C# requires manual intervention to free memory resources periodically.
• Garbage collection in C# automatically manages memory by reclaiming objects that are no longer in use, preventing memory leaks and eliminating the need for manual memory management.
• Garbage collection in C# creates new threads to handle background processes for applications.
• Garbage collection in C# compiles code to improve execution speed and performance.

24. How do you handle exceptions in C#?

• Exceptions in C# are ignored by default.
• Only the finally block is used for exception handling.
• You cannot handle exceptions in C#.
• Exceptions in C# can be handled using try-catch blocks.

25. What is the purpose of the “using” statement in C#?

• The “using” statement creates loops for iteration.
• The “using” statement defines a namespace in code.
• The “using” statement manages resource disposal.
• The “using” statement initializes variables automatically.

26. What are the different access modifiers in C#?

• global, local, internal, external
• open, closed, limited, shared
• public, private, protected, internal
• visible, hidden, exposed, secure

27. What is PHP, and what are its key features?

• PHP is a front-end programming language for desktop applications. Its key features include graphic design tools and mobile compatibility.
• PHP is a markup language for website layout. Its key features include CSS integration, multimedia embedding, and visual editing capabilities.
• PHP is a data manipulation language used in spreadsheets. Its key features include complex formulas, statistics functions, and charting tools.
• PHP is a server-side scripting language used for web development. Its key features include easy HTML integration, database support, extensive library support, and cross-platform compatibility.

28. What are the differences between GET and POST methods in PHP?

• The POST method only works for URL shorteners, while GET is for forms.
• The GET method sends data through the URL, while the POST method sends data in the request body.
• The GET method saves data in the database, while the POST method retrieves it.
• The GET method is always more secure than the POST method.

29. Explain the differences between include, require, include_once, and require_once in PHP.

• include_once causes a fatal error if the file cannot be found, while require evaluates silently.
• include allows multiple inclusion of files, while require does not.
• include and require are used to include files, but require will cause a fatal error if the file is not found. include_once and require_once do the same but prevent multiple inclusions if the file has already been included.
• require_once will always include the file regardless of previous inclusions.

30. What are the key responsibilities of a senior back-end engineer?

• Key responsibilities include designing and developing robust, scalable, and efficient back-end systems.
• Key responsibilities involve writing front-end code and designing user interfaces.
• Key responsibilities focus on graphic design and multimedia production.
• Key responsibilities include managing a company`s social media accounts.