Why is user input validation important in preventing SQL injection?
- It enhances user experience
- It ensures the correct syntax of SQL queries
- It is not important in preventing SQL injection
- It prevents attackers from accessing the server
User input validation is crucial in preventing SQL injection as it ensures that the input adheres to the expected data format, thereby preventing malicious input that could be used to manipulate SQL queries.
Which OAuth grant type is most suitable for a web application with a server backend?
- Authorization Code
- Client Credentials
- Implicit
- Resource Owner Password Credentials
The Authorization Code grant type is recommended for web applications with a server backend because it provides an additional layer of security by requiring the exchange of an authorization code for an access token.
To override a built-in Helper in CodeIgniter, place the custom Helper in the ________ directory.
- Application
- Custom
- Override
- System
To override a built-in Helper, place the custom Helper in the application/helpers directory, which takes precedence over the system directory.
What is the significance of the 'ENVIRONMENT' constant in CodeIgniter's index.php file?
- Configuring the database connection
- Defining the application environment
- Enabling or disabling debugging features
- Setting the PHP error reporting level
The 'ENVIRONMENT' constant in CodeIgniter's index.php file is used to define the application environment. It allows you to set whether the application is in development, testing, or production mode. This, in turn, determines the level of error reporting and various debugging features.
How does CodeIgniter support the development of HATEOAS (Hypertext As The Engine Of Application State) in RESTful APIs?
- CodeIgniter provides a built-in HATEOAS library that simplifies the creation of hypermedia links.
- CodeIgniter relies on manual coding for HATEOAS implementation.
- CodeIgniter uses a third-party library for HATEOAS support.
- HATEOAS is not directly supported in CodeIgniter.
CodeIgniter simplifies the creation of hypermedia links by providing a built-in HATEOAS library. HATEOAS is essential for guiding API clients through available actions, improving discoverability and navigation.
For load balancing, CodeIgniter allows the specification of multiple database servers in the ________ array.
- config
- connection
- database
- server
CodeIgniter allows the specification of multiple database servers in the database array. This feature is useful for load balancing and managing multiple database connections efficiently.
In a typical payment gateway integration, which component is responsible for handling customer payment details securely?
- Application interface
- Database server
- Payment gateway API
- Web server
The payment gateway API is responsible for securely handling customer payment details. It encrypts and transmits sensitive information, such as credit card numbers, to the payment gateway for processing while ensuring data integrity and confidentiality.
How do CodeIgniter's database utilities assist in handling database versioning?
- Automatic schema detection and adjustment
- Code generation for database schema
- Enforcing foreign key constraints through the ORM
- Version control through migration files
CodeIgniter's database utilities provide version control through migration files. Migration files allow developers to modify the database schema and keep track of changes, making it easy to apply updates across different environments.
In CodeIgniter, how do you load a Model inside a Controller?
- $model = new ModelName();
- $this->load->model('ModelName');
- include('ModelName');
- require('ModelName.php');
To load a Model in CodeIgniter, you use the $this->load->model('ModelName'); syntax. This makes the Model available for use within the Controller.
What is the role of 'Profiling' in CodeIgniter when it comes to performance optimization?
- It automates code optimization
- It enhances database design
- It helps in debugging code issues
- It provides insights into the application's performance
'Profiling' in CodeIgniter plays a crucial role in performance optimization by providing insights into the application's performance. It helps developers identify bottlenecks, inefficient queries, and other areas that can be optimized to enhance the overall speed and efficiency of the application.