In terms of security, why is relying solely on client-side validation not advisable?
- It can be easily bypassed by malicious users
- It conflicts with browser settings
- It requires additional server resources
- It slows down form submission
Relying solely on client-side validation is not advisable for security reasons because it can be easily bypassed by malicious users. Client-side validation is performed on the user's browser, and a knowledgeable attacker can manipulate or disable it. Server-side validation is essential to ensure that data integrity and security are maintained.
What does XSS stand for in web security?
- Cross-Site Authentication
- Cross-Site Request Forgery
- Cross-Site Scripting
- Cross-Site Server
Cross-Site Scripting (XSS) is a security vulnerability that allows attackers to inject malicious scripts into web pages. It can occur when a web application does not properly validate user input, allowing the attacker to execute scripts in the victim's browser.
In MVC architecture, which component is responsible for handling user inputs?
- Controller
- Library
- Model
- View
In MVC architecture, the 'Controller' component is responsible for handling user inputs. It receives user requests, processes them, and interacts with the Model and View components accordingly. This separation of concerns helps maintain code organization and enhances code reusability.
To enhance security, a developer implements a feature that checks the referrer header and token validity. This technique is known as ________.
- CSRF Protection
- Cross-Origin Security
- Header Validation
- Token Authentication
This technique is known as CSRF (Cross-Site Request Forgery) protection, where the referrer header and token validity are checked to prevent unauthorized form submissions.
To retrieve database error messages in CodeIgniter, use the ________ function.
- db_error()
- error_msg()
- get_error()
- last_error()
In CodeIgniter, to retrieve database error messages, the correct function is db_error(). This function allows you to get the last database error that occurred.
For advanced caching in CodeIgniter, the cache adapter is set in the ________ configuration file.
- cache.php
- config.php
- database.php
- routes.php
CodeIgniter uses the config.php file to set up various configurations, including the cache adapter for advanced caching.
The function name in a CodeIgniter Helper file typically ends with the suffix ________.
- _helper
- _function
- _lib
- _code
The correct option is "a) _helper". In CodeIgniter, Helper function names usually end with the "_helper" suffix to distinguish them as Helper functions.
The technique of ________ is essential in the Email Class to avoid being flagged as spam.
- CAPTCHA Verification
- DKIM (DomainKeys Identified Mail)
- Email Encryption
- SPF (Sender Policy Framework)
The technique of DKIM (DomainKeys Identified Mail) is essential in the Email Class to add a digital signature to outgoing emails. This signature helps verify the authenticity of the sender, reducing the chances of emails being flagged as spam by recipient servers.
In CodeIgniter, what is the significance of the 'environment' setting in relation to error handling?
- It controls whether errors are displayed or logged.
- It defines the layout and styling of the error pages.
- It determines the PHP version compatibility for errors.
- It sets the timezone for error timestamps.
The 'environment' setting in CodeIgniter controls how errors are handled: displayed or logged. It's crucial for managing errors during development and production.
Describe the role of 'hooks' in custom error handling within CodeIgniter.
- Hooks allow developers to attach custom functions to the CodeIgniter core process at specific points, including error handling.
- Hooks are primarily used for routing purposes and not related to error handling.
- Hooks are used to bypass custom error handling and directly handle errors in the core system.
- Hooks provide a way to disable error handling for specific controllers.
In custom error handling within CodeIgniter, hooks play a crucial role by enabling developers to attach custom functions to the core process at specific points, including error handling. This allows for tailored error-handling mechanisms based on specific needs.