How can database queries be optimized in CodeIgniter using configuration settings?
- Disable Persistent Connections
- Enable Query Caching
- Increase Memory Limit
- Use a Larger Database Server
CodeIgniter allows optimizing database queries through the configuration setting 'enable_query_cache.' By enabling query caching, CodeIgniter will store the result of queries in cache, reducing the load on the database server and improving performance.
What does setting the logging threshold to 4 in CodeIgniter do?
- Display all messages, including debugging
- Display only error messages
- Display only information messages
- Display only messages with a severity level of 4
Setting the logging threshold to 4 in CodeIgniter means that only messages with a severity level of 4 (INFO) and higher will be displayed. It helps in controlling the verbosity of the log messages based on their severity.
What is the significance of the PKCE (Proof Key for Code Exchange) extension in OAuth 2.0?
- It is used for client authentication in OAuth 2.0.
- It provides additional security for authorization codes in public clients.
- PKCE is optional and doesn't impact the security of OAuth 2.0.
- PKCE is used to encrypt user data during the authorization process.
PKCE is crucial for enhancing the security of OAuth 2.0, especially in public clients, by preventing authorization code interception attacks. It adds an additional layer of protection during the code exchange process.
Advanced payment gateway integrations may use ________ to dynamically calculate the best transaction route.
- Dynamic Routing
- Intelligent Routing
- Payment Algorithms
- Transaction Optimization
In advanced payment gateway integrations, intelligent routing is utilized to dynamically calculate the best transaction route. This involves assessing various factors such as transaction cost, network latency, and currency conversion rates to optimize the payment process. Intelligent routing ensures efficient and cost-effective transactions.
CodeIgniter's implementation of ________ tokens is an effective measure against CSRF attacks.
- CSRF
- Form
- Random
- Security
CodeIgniter uses CSRF (Cross-Site Request Forgery) tokens to protect against CSRF attacks. These tokens are unique and specific to each user session, making it difficult for attackers to forge requests on behalf of users.
What security risks are associated with storing uploaded files directly in the webroot directory?
- Enhanced security through isolation, reduced risk of unauthorized access
- Improved file access speed, enhanced server performance
- Increased risk of code execution, vulnerability to file inclusion attacks
- Simplified file management, easier accessibility
Storing uploaded files directly in the webroot directory poses a significant security risk, as it allows for potential code execution and makes the application vulnerable to file inclusion attacks. By placing files outside the webroot, the risk of unauthorized access is reduced.
What is the purpose of the __construct() function in a CodeIgniter controller?
- Defining route configurations
- Handling HTTP requests and responses
- Initializing class properties and methods
- Loading necessary libraries and resources
The __construct() function in a CodeIgniter controller is used for initializing class properties, loading necessary libraries, and performing tasks that need to be executed before any other controller method is called.
Which CodeIgniter configuration file is used to set the logging threshold?
- config.php
- database.php
- log.php
- routes.php
In CodeIgniter, the logging threshold is set in the 'log.php' configuration file. This file allows you to configure various logging parameters, including the threshold level for capturing log messages.
In CodeIgniter, reducing the number of ________ can significantly improve application performance.
- Controllers
- Database Queries
- Models
- Views
By optimizing and reducing the number of database queries, developers can significantly enhance the performance of their CodeIgniter applications. Efficient database interactions are crucial for a well-performing application.
In a CSP policy, the directive ________ is used to control sources of script execution.
- font-src
- img-src
- script-src
- style-src
The 'script-src' directive in a Content Security Policy (CSP) is used to control the sources from which scripts can be executed on a web page.
Which type of form validation occurs on the server-side after the data is submitted?
- Client-side validation
- Front-end validation
- Real-time validation
- Server-side validation
Server-side validation is performed on the server after the form is submitted. It is essential for security and data integrity, as it can't be bypassed by users. Server-side validation checks input against predefined rules, reducing the risk of accepting invalid or malicious data.
A common method to secure file uploads is to validate the file's ________ and size.
- Extension
- Hash
- Permissions
- Signature
Validating the file's extension and size is a common practice to enhance security during file uploads. This prevents malicious files and ensures that the file adheres to acceptable size limits.