When optimizing a CodeIgniter application for performance, a developer decides to replace a native library with a more efficient third-party library. The key factor to consider in this scenario is __________.
- Compatibility and support for future CodeIgniter versions
- Cost of the third-party library
- Licensing restrictions of the third-party library
- The ease of integration with CodeIgniter
When replacing a native library with a third-party one for performance optimization, compatibility with future CodeIgniter versions is crucial. This ensures that the application remains maintainable and can benefit from future updates without major disruptions.
When refactoring an existing application, a developer decides to replace core library functions with a custom library. The first step in this process should be ________.
- Analyze the existing library functions
- Create a backup of the original code
- Identify the dependencies of the existing functions
- Update the application configuration
Before replacing core library functions, it's crucial to identify the dependencies of the existing functions. This involves understanding which parts of the application rely on the current functionality. This step helps prevent unintended consequences and ensures a smooth transition to the custom library.
What is the primary purpose of a Model in CodeIgniter?
- Data manipulation
- Database connectivity
- File handling
- User interface design
In CodeIgniter, a Model is primarily used for database connectivity. It facilitates data manipulation and interacts with the database, ensuring separation of concerns in the MVC architecture.
How does a 'stack trace' aid in debugging exceptions?
- A stack trace is a tool for creating new function calls during debugging.
- A stack trace is irrelevant in debugging exceptions.
- A stack trace is only useful for tracing the execution of loops in the code.
- A stack trace provides a detailed report of the function calls and their sequence leading to the point where an exception occurred.
A stack trace is a crucial tool in debugging as it reveals the entire call stack leading to the point where the exception was thrown. It assists developers in identifying the flow of execution, making it easier to pinpoint and fix issues.
How does CodeIgniter's Content Security Policy (CSP) enhance web application security?
- Enhances database encryption for improved security
- Mitigates Cross-Site Scripting (XSS) attacks by restricting the sources of content
- Provides a user authentication layer for added security
- Speeds up page loading through optimized caching
CodeIgniter's Content Security Policy (CSP) helps mitigate Cross-Site Scripting (XSS) attacks by restricting the sources of content. This adds an extra layer of protection against malicious scripts injected into web pages.
To configure SMTP settings for sending emails in CodeIgniter, one must edit the ________ file.
- config.php
- email.php
- settings.php
- smtp.php
In CodeIgniter, SMTP settings for sending emails are configured in the email.php configuration file. This file allows you to specify various email-related settings, including the SMTP server configuration.
What advanced technique is used in CodeIgniter for optimizing JSON and XML data serialization and deserialization?
- Benchmarking
- Caching
- REST API
- XML-RPC
In CodeIgniter, caching is a common technique used to optimize JSON and XML data serialization and deserialization. Caching reduces the processing time by storing the results of expensive operations.
________ is a key technique in optimizing RESTful APIs in CodeIgniter for better performance.
- Caching
- Encryption
- Middleware
- Throttling
Caching is a crucial technique in CodeIgniter for optimizing RESTful APIs. It involves storing the results of expensive API calls and returning the cached result when the same inputs occur again. This reduces the load on the server and improves overall performance.
To prevent CSRF, a ________ token is often added to forms as a hidden field.
- CSRF
- Random
- Session
- Token
CSRF protection
Which method is used in CodeIgniter to encrypt and decrypt data securely?
- Cipher library
- Encryption is not supported
- OpenSSL library
- mcrypt library
CodeIgniter uses the OpenSSL library for secure encryption and decryption of data. OpenSSL provides a robust set of cryptographic functions, and CodeIgniter leverages it to ensure the confidentiality and integrity of sensitive information. Avoiding outdated libraries like mcrypt is crucial for maintaining security.