Advanced usage of the Email Class involves ________ to ensure high deliverability rates.
- Email Blacklisting
- Email List Segmentation
- Email Throttling
- SPF and DKIM Configuration
Advanced usage of the Email Class involves configuring SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to authenticate emails. This, in turn, helps improve deliverability rates by establishing trust with email service providers and reducing the likelihood of emails being marked as spam.
Which CodeIgniter method checks whether the current database platform supports transactions?
- $this->db->check_transactions();
- $this->db->supports_transactions();
- $this->db->trans_status();
- $this->db->trans_supported();
The method $this->db->supports_transactions(); checks whether the current database platform supports transactions in CodeIgniter. It returns a boolean value indicating transaction support.
When a user encounters a non-existent page, redirecting them to a custom error page is handled by ________ in CodeIgniter.
- 404_override Route
- Controller __construct() method
- Error Handling Class
- Routes Configuration
The 404_override route in CodeIgniter allows developers to specify a custom controller/method to handle 404 (page not found) errors. It provides a way to redirect users to a custom error page when a non-existent page is encountered.
The use of ________ in payment gateways helps in managing recurring payments efficiently.
- Authentication
- Encryption
- Secure Protocols
- Tokenization
Tokenization is a crucial feature in payment gateways for managing recurring payments efficiently. It involves replacing sensitive payment information with a unique token, enhancing security and simplifying the process of handling recurring transactions without exposing confidential data.
In CodeIgniter, the use of ________ headers can help prevent Clickjacking attacks.
- X-Frame-Options
- X-Content-Type-Options
- Strict-Transport-Security
- Content-Security-Policy
CodeIgniter recommends setting the X-Frame-Options header to prevent Clickjacking attacks. This header controls whether a browser should be allowed to render a page in a frame or iframe, adding a security layer against UI redressing attacks.
In the database configuration, the ________ setting determines whether to use persistent database connections.
- connection_persistence
- pconnect
- persistent
- use_persistent
In CodeIgniter's database configuration, the pconnect setting determines whether to use persistent database connections. Setting it to TRUE enables persistent connections, while setting it to FALSE disables them. Persistent connections help reduce the overhead of establishing a new connection for each request, improving performance.
A mobile app uses OAuth for authentication. The app should primarily use the ________ grant type to ensure security and efficiency.
- Authorization
- Password
- Client Credentials
- Implicit
The correct option is "Client Credentials." This grant type is suitable for confidential clients, such as the mobile app in this scenario, to obtain an access token without the user's involvement. It enhances security and efficiency by authenticating the client itself.
How does CodeIgniter's session management differ when using database versus file-based storage?
- Database storage allows for more complex session data structures.
- File-based storage is faster and more efficient for session handling.
- File-based storage is recommended for small-scale applications.
- Sessions are more secure when stored in a database due to encryption and server-side validation.
CodeIgniter's session management provides enhanced security when stored in a database by employing encryption and server-side validation. This ensures that sensitive information is better protected. However, developers should be mindful of the performance implications and choose the storage method based on the application's needs.
When refactoring a CodeIgniter application for better performance, the first step is to ensure existing unit tests ________.
- Cover all possible edge cases
- Execute successfully without failures
- Include extensive documentation
- Update to the latest CodeIgniter version
The first step in refactoring for better performance is to ensure that existing unit tests execute successfully without failures. This helps ensure that the changes made do not introduce new issues and that the application remains stable.
What is the primary HTTP method used to retrieve data in a RESTful API developed with CodeIgniter?
- DELETE
- GET
- POST
- PUT
In a RESTful API, the primary HTTP method used to retrieve data is GET. This method is commonly used for reading resources and does not modify the server's state. In CodeIgniter, you would design your API endpoints to respond to GET requests for data retrieval.