When debugging an issue where user input is not properly reflected in the database, an expert should first check the ________ component in the MVC architecture.
- Controller
- Database Configuration
- Model
- View
The issue of user input not properly reflected in the database is likely related to the Model, as it is responsible for handling data manipulation and interactions with the database.
In a news portal developed with CodeIgniter, a developer needs to implement pagination for the latest news section. The challenge is to optimize load times for thousands of news items. The most efficient approach involves ________.
- Implementing server-side caching for news items
- Manually fetching all news items and implementing custom pagination logic
- Using CodeIgniter's built-in pagination library
- Utilizing AJAX to load news items dynamically on scroll
Efficient pagination for a large number of items is best achieved using CodeIgniter's built-in pagination library. This library handles the generation of pagination links and the SQL query to fetch only the necessary items, optimizing load times.
What design pattern is MVC architecture primarily based on?
- Composite
- Observer
- Singleton
- Strategy
MVC architecture is primarily based on the Singleton design pattern. This pattern ensures that a class has only one instance and provides a global point of access to that instance. In MVC, the Singleton pattern helps in managing the model, view, and controller instances efficiently.
The process of sorting results in a specific order in CodeIgniter's Query Builder is achieved using the ________ method.
- arrange()
- order()
- order_by()
- sort()
The correct method for sorting results in a specific order in CodeIgniter's Query Builder is the order_by() method. It allows you to specify the column and the order (ascending or descending) for sorting.
CodeIgniter's performance in handling static assets can be improved by implementing ________.
- AJAX
- Asset Minification
- Caching
- Middleware
In CodeIgniter, improving performance with static assets involves implementing caching mechanisms. Caching helps in storing frequently accessed static assets, reducing the load time by serving them directly from the cache rather than regenerating them on each request.
When implementing a caching mechanism for JSON responses, CodeIgniter developers often use _______________.
- APCu
- File
- Memcached
- Redis
CodeIgniter developers often use Redis when implementing a caching mechanism for JSON responses. Redis is an advanced key-value store that provides high-performance caching for improved response times.
In CodeIgniter, the configuration setting $config['sess_ ________'] determines where session data is stored.
- driver
- handler
- path
- storage
The correct configuration setting is $config['sess_driver'], which determines the storage driver for session data in CodeIgniter. This setting specifies whether session data should be stored in the database, files, or other storage mechanisms.
Which of the following is a key consideration when integrating social media login into your application?
- Cross-Site Scripting
- Data Encryption
- Session Management
- User Authentication
Integrating social media login involves authenticating users through platforms like Facebook or Google. Ensuring a secure user authentication process is a key consideration to protect user data and maintain the integrity of your application.
Enabling ________ in CodeIgniter can reduce the server load and improve response time.
- CSRF Protection
- Output Compression
- Query Caching
- Session Encryption
Output compression reduces the size of the server response, leading to faster page loading times and reduced bandwidth usage. This is crucial for improving the overall performance of a web application.
Advanced debugging techniques in CodeIgniter may involve custom ______ to handle exceptions.
- Functions
- Handlers
- Libraries
- Logging
In CodeIgniter, advanced debugging may require the creation of custom exception handlers to handle errors more effectively. These handlers can be used to log errors, send alerts, or perform any specific action when exceptions occur.
What is the role of the 'DB Driver' setting in CodeIgniter's database configuration?
- It defines the database hostname.
- It determines the database port.
- It sets the database username.
- It specifies the type of database connection used by the application.
The 'DB Driver' setting in CodeIgniter's database configuration is crucial as it specifies the type of database connection used by the application. It could be MySQL, PostgreSQL, SQLite, etc. This setting ensures that CodeIgniter communicates with the correct database driver for seamless interaction.
Which function in CodeIgniter's Model is commonly used to retrieve data from the database?
- fetch()
- get()
- retrieve()
- select()
The get() function in CodeIgniter's Model is commonly used to retrieve data from the database. It simplifies the process of fetching records from tables.