How do servlet filters complement the MVC architecture in web applications?
- Filters can preprocess requests and post-process responses, adding a layer of functionality
- Filters cannot be integrated with MVC architecture
- Filters handle only authentication tasks
- Filters replace the need for controllers in MVC
Servlet filters complement the MVC architecture by providing a mechanism to preprocess requests and post-process responses. They add a layer of functionality that can be applied across multiple components, enhancing the flexibility of the MVC design.
In an MVC framework, a servlet often delegates business logic processing to __________.
- DAO
- controller
- model
- view
In an MVC framework, a servlet often delegates business logic processing to the controller layer, which is responsible for handling user input and coordinating the application's response.
The servlet forwards the processed data to the view using the __________ mechanism.
- forward
- include
- request
- response
The servlet forwards the processed data to the view using the forward mechanism, allowing the view to render the updated information based on the servlet's processing.
Servlets in an MVC framework typically receive user input through __________.
- cookies
- hidden fields
- request parameters
- session attributes
Servlets in an MVC framework typically receive user input through request parameters, which are data sent by the client as part of the HTTP request and can be accessed by the servlet.
The __________ pattern used in MVC frameworks centralizes request handling in a single servlet.
- Adapter
- Front Controller
- Observer
- Strategy
The Front Controller pattern used in MVC frameworks centralizes request handling in a single servlet.
Which JavaScript framework automatically escapes output to prevent XSS attacks?
- AngularJS
- React
- Vue.js
- jQuery
AngularJS automatically escapes output to prevent XSS attacks by default, helping developers build more secure web applications.
How does a Content Security Policy (CSP) help in preventing XSS attacks?
- It allows only inline scripts
- It encrypts the communication
- It filters HTTP headers
- It restricts the sources of content
A Content Security Policy (CSP) helps prevent XSS attacks by restricting the sources of content, reducing the risk of malicious script execution from unauthorized sources.
To maintain a separation of concerns, servlets in MVC should not directly manipulate the __________.
- Controller
- Database
- Model
- View
To maintain a separation of concerns, servlets in MVC should not directly manipulate the Controller.
The __________ method in servlets is often used to dispatch requests to different handlers in an MVC framework.
- doDispatch()
- doPost()
- init()
- service()
The doDispatch() method in servlets is often used to dispatch requests to different handlers in an MVC framework.
In a complex web application using MVC and servlets, a new feature requires integration of a third-party service. Where should this integration primarily take place?
- In a separate utility class
- In the Controller
- In the Model
- In the View
In MVC architecture, business logic, including third-party service integration, is primarily handled in the Controller. This ensures separation of concerns and makes the application more modular.