What is the impact of using a whitelist approach for input validation in SQL injection defense?
- It allows only predefined, safe inputs
- It blocks all user inputs
- It encrypts the database
- It relies on blacklisting known dangerous inputs
Using a whitelist approach for input validation in SQL injection defense involves allowing only predefined, safe inputs to be accepted by the application. This approach helps prevent SQL injection by explicitly specifying the permissible inputs, thereby reducing the risk of unauthorized SQL commands being injected into the application.
Form validation that involves checking the data against a set of rules before it's processed is known as ________ validation.
- Dynamic
- Pre-submission
- Real-time
- Static
Pre-submission validation checks data against a set of rules before it's submitted, ensuring that only valid data is processed, enhancing the integrity of the submitted information.
Which database helper function in CodeIgniter is used for debugging by displaying the last query executed?
- debug_query()
- last_query()
- print_last_query()
- show_query()
The last_query() function in CodeIgniter's database helper is used for debugging by displaying the last executed database query. It helps developers inspect and troubleshoot database interactions during development.
Advanced CodeIgniter performance optimization often involves fine-tuning:
- Caching mechanisms
- Database queries
- Front-end code
- Server configuration
Fine-tuning caching mechanisms, such as optimizing query caching and view caching, is crucial for advanced CodeIgniter performance optimization. It helps reduce the load on the server and speeds up application response times.
In CodeIgniter, which global array is used to define database connection parameters?
- $config['database']
- $database_params
- $db_config
- $db_params
The correct global array to define database connection parameters in CodeIgniter is $config['database']. This array holds values such as 'hostname', 'username', 'password', 'database', etc.
What is the recommended approach for handling exceptions in CodeIgniter models?
- Allow PHP to handle exceptions by default.
- Ignore exceptions and rely on error logging.
- Use the 'show_error()' function to display exceptions.
- Use try-catch blocks to catch exceptions and handle them.
The recommended approach for handling exceptions in CodeIgniter models is to use try-catch blocks. This allows for proper handling and logging of exceptions.
A developer needs to consistently format dates across the application. The best approach is to use the ________ Helper.
- date
- form
- format
- text
In CodeIgniter, the date Helper is used to format dates consistently across the application. It provides functions to format, manipulate, and work with dates in a standardized way.
In CodeIgniter, how can you roll back a transaction in case of an error?
- $this->db->commit();
- $this->db->rollback();
- $this->db->trans_commit();
- $this->db->trans_rollback();
In CodeIgniter, you can roll back a transaction in case of an error using the $this->db->trans_rollback(); method. This function will undo all queries run after the trans_start() method was called.
To override default controllers, models, or libraries, the developer should place these in the ________ directory.
- application/controllers
- application/custom
- application/extensions
- application/overrides
In CodeIgniter, to override default controllers, models, or libraries, the developer should place these customized versions in the 'application/overrides' directory.
How do SameSite cookies contribute to CSRF protection?
- CSRF is entirely unrelated to SameSite cookies.
- Mitigates CSRF by restricting cookie access based on the request source.
- Prevents CSRF by encrypting cookies to make them inaccessible to attackers.
- SameSite cookies have no impact on CSRF protection.
SameSite cookies contribute to CSRF protection by restricting cookie access based on the request source. This helps prevent malicious requests from other sites that might attempt to perform actions on behalf of the user. It's an additional layer of security to ensure that cookies are only sent in a first-party context, reducing the risk of CSRF attacks.