How does CodeIgniter handle nested transactions?
- CodeIgniter doesn't support nested transactions.
- CodeIgniter handles nested transactions by using the 'trans_begin()' and 'trans_complete()' functions.
- CodeIgniter supports nested transactions through the use of savepoints.
- CodeIgniter uses database triggers for nested transactions.
CodeIgniter supports nested transactions using savepoints. Savepoints allow you to create intermediate points within a transaction, providing a way to roll back to specific points if needed. This is useful for complex transactions where you want more granular control over the rollback process.
A developer needs to ensure session data is available only during the current browser session. This can be achieved by setting ________ in CodeIgniter's session configuration.
- session_destroy_on_exit
- session_expire_on_close
- session_regenerate_on_close
- session_renew_on_reload
To ensure session data is available only during the current browser session in CodeIgniter, set the session_expire_on_close configuration. This causes the session to expire when the browser is closed.
How can you enable profiling in a CodeIgniter application?
- $config['enable_profiler'] = TRUE;
- $config['enable_profiler'] = FALSE;
- $this->config->set_item('enable_profiler', TRUE);
- $this->config->set_item('enable_profiler', FALSE);
In CodeIgniter, enabling profiling is done by setting the enable_profiler configuration option to TRUE. It provides a detailed report of the execution of your application, helping in performance analysis.
An application allows users to share their achievements directly to their social media accounts. This feature primarily utilizes the ________ of the social media platform's API.
- Authentication
- Webhooks
- Endpoints
- Authorization
The correct option is "Authorization." When sharing achievements on social media, the application needs to access the user's account without exposing credentials. Authorization ensures that the app has the necessary permissions to post on the user's behalf.
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.
In CodeIgniter, which utility is commonly used to backup a database?
- backup class
- dbbackup helper
- dbmanager utility
- dbutil library
The backup class in CodeIgniter is commonly used to perform database backups. It provides a simple and convenient way to create and manage backups of your database.
For secure data transmission, CodeIgniter recommends using ________ to encrypt session data.
- base64_encode
- encrypt
- md5
- ssl_encrypt
CodeIgniter suggests using the encrypt library for secure data transmission, especially when dealing with session data. This library provides a way to encrypt and decrypt sensitive information, adding an extra layer of protection.
The ________ in MVC serves as the application's brain, containing logic and decision-making capabilities.
- Controller
- Model
- Router
- View
In the MVC architecture, the Controller acts as the application's brain, handling user input, processing logic, and making decisions based on the input. It plays a crucial role in controlling the flow of the application.
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.