In MVC architecture, how does a servlet interact with the model to process business logic?
- Servlets communicate with the model through JavaBeans or other business logic components.
- Servlets directly manipulate the model by interacting with the database.
- Servlets have no interaction with the model in MVC.
- Servlets use JSPs exclusively to handle business logic in MVC.
Servlets interact with the model by communicating through JavaBeans or other dedicated business logic components to process business logic in an MVC application.
How are servlets used in conjunction with JSPs in a typical MVC application?
- Servlets and JSPs are interchangeable and can be used for any MVC role.
- Servlets and JSPs are not used together in MVC applications.
- Servlets handle business logic, and JSPs handle presentation logic.
- Servlets handle presentation logic, and JSPs handle controller logic.
In a typical MVC application, servlets are often used to handle business logic, while JSPs are used for presentation logic. Servlets and JSPs work together to achieve a separation of concerns in MVC.
How can servlets be effectively used to implement the front controller pattern in an MVC application?
- Delegate control to JSP pages
- Directly connect the servlets to the database
- Implement a central servlet that handles all incoming requests
- Use multiple servlets for each controller action
Servlets can effectively implement the front controller pattern by having a central servlet that handles all incoming requests, allowing for a centralized point to manage request handling in an MVC architecture.
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.
A web application needs to redirect the user to different pages based on their role. How should this logic be implemented using servlets in MVC?
- In the Controller
- In the Model
- In the View
- Using servlet filters
The logic for redirecting users based on their role should be implemented in the Controller. The Controller handles the application's flow and decides which view to render based on the user's role.
A servlet is configured with specific initialization parameters. How does this impact the servlet's processing of requests?
- The parameters are accessible using the getInitParameter() method within the servlet.
- The parameters are accessible using the request.getParameter() method.
- The parameters are automatically injected into the servlet methods.
- The parameters are only accessible in the doPost() method.
When a servlet is configured with specific initialization parameters, these parameters can be accessed within the servlet using the getInitParameter() method, allowing customization of the servlet's behavior based on the configuration.