33 Lecture

Question: What is a common coding mistake that can lead to unexpected behavior and security vulnerabilities? a) Using global variables excessively b) Adding comments to code c) Implementing proper error handling d) Following coding style guidelines Solution: a Question: What is the purpose of implementing proper error handling in code? a) To hide errors and exceptions from users b) To cause program crashes for debugging purposes c) To gracefully handle unexpected situations and provide informative messages d) To make the code more complicated and difficult to maintain Solution: c Question: What is a potential consequence of ignoring input validation in code? a) Improved code security b) Reduced chance of code crashes c) Prevention of buffer overflows and SQL injection d) Introduction of security vulnerabilities and unexpected behavior Solution: d Question: What can excessive code duplication lead to in a codebase? a) Improved code maintainability b) Reduced risk of introducing bugs c) Increased code readability d) Harder code maintenance and increased chances of inconsistencies Solution: d Question: Which coding practice is a common mistake that often results in memory leaks or segmentation faults? a) Proper memory management b) Regular use of pointers c) Ignoring the use of dynamic memory allocation d) Usage of object-oriented programming Solution: c Question: Why is neglecting code testing a common coding mistake? a) Code testing is unnecessary and time-consuming. b) It is not the responsibility of the developer to test the code. c) Testing ensures the code works as intended and helps catch bugs early. d) Code is guaranteed to work flawlessly without testing. Solution: c Question: Which of the following is a common coding mistake related to comments in code? a) Including comments to explain complex logic or algorithms b) Adding excessive comments to every line of code c) Using descriptive comments to document the purpose of functions d) Ignoring the use of comments altogether Solution: b Question: How can excessive reliance on global variables affect code maintainability? a) It simplifies code and improves understanding. b) It enhances code readability and organization. c) Changes to global variables can have unintended effects throughout the codebase. d) It has no impact on code maintainability. Solution: c Question: What is the purpose of considering boundary conditions when coding? a) To test code only with typical scenarios and data. b) To ensure code works correctly with edge cases and extreme inputs. c) To minimize the use of loops and conditionals in code. d) To make the code more complicated and robust. Solution: b Question: Which common coding mistake can be addressed by using automated tools and linters? a) Proper memory management b) Error handling c) Code duplication d) Ignoring input validation Solution: c

Question: What is code duplication, and why is it considered a common coding mistake? Answer: Code duplication refers to having similar or identical code in multiple places. It is a mistake because it increases maintenance efforts, introduces inconsistencies, and makes code harder to manage. Question: Why is proper error handling important in coding? Answer: Proper error handling is crucial because it allows a program to gracefully handle unexpected situations and provide informative messages to users. It helps prevent crashes and improves the overall user experience. Question: Explain why ignoring input validation can be dangerous. Answer: Ignoring input validation can lead to security vulnerabilities like buffer overflows or SQL injection attacks. It allows malicious users to exploit the application and potentially compromise sensitive data. Question: What are some potential consequences of excessive use of global variables in code? Answer: Excessive use of global variables can lead to code coupling, making it harder to understand and maintain. Changes to global variables may have unintended effects throughout the codebase. Question: How does neglecting code testing impact software quality? Answer: Neglecting code testing increases the risk of shipping buggy code to production, leading to reduced software quality and potential user dissatisfaction. Question: What are the benefits of adding appropriate comments to code? Answer: Appropriate comments help in code documentation, explaining complex logic, and making the codebase more understandable to other developers, improving collaboration. Question: Why is ignoring proper memory management a common coding mistake? Answer: Ignoring proper memory management can lead to memory leaks or segmentation faults, resulting in unstable and unreliable software. Question: How does considering boundary conditions in coding contribute to robustness? Answer: Considering boundary conditions ensures that code functions correctly for extreme inputs or edge cases, making the software more robust and less prone to unexpected behavior. Question: What are the potential drawbacks of excessive comments in code? Answer: Excessive comments can clutter the code and make it harder to read. They may also become outdated, leading to misinformation about the code's functionality. Question: How can developers avoid common coding mistakes and improve their coding practices? Answer: Developers can improve their coding practices by following coding standards and best practices, utilizing automated testing tools, and conducting code reviews to catch potential mistakes early in the development process.