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.
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.
When optimizing an MVC application for performance, where should caching strategies be implemented in relation to servlets?
- In a separate caching layer
- In the Controller
- In the Model
- In the View
Caching strategies, for optimizing performance, should be implemented in the Model. The Model is responsible for data access and processing, making it an appropriate place to introduce caching mechanisms.
What is the primary purpose of encoding user input in web applications?
- To enhance the performance of the application
- To improve the user experience
- To prevent security vulnerabilities like XSS
- To simplify code implementation
The primary purpose of encoding user input is to prevent security vulnerabilities, such as Cross-Site Scripting (XSS), by ensuring that user input is treated as data, not executable code.
Which HTTP header can be used to mitigate some types of XSS attacks?
- Content-Security-Policy
- Strict-Transport-Security
- X-Content-Type-Options
- X-Frame-Options
The Content-Security-Policy (CSP) header can be used to mitigate some types of XSS attacks by defining and controlling the sources from which certain types of content can be loaded.
How do you set a response header to indicate the content should be downloaded as a file?
- response.setHeader("Content-Disposition", "attachment; filename=example.txt");
- response.setHeader("Content-Encoding", "gzip");
- response.setHeader("Content-Transfer-Encoding", "binary");
- response.setHeader("Content-Type", "application/octet-stream");
To indicate that the content should be downloaded as a file, you can use the response.setHeader("Content-Disposition", "attachment; filename=example.txt"); method.
In the context of XSS prevention, what does the acronym CSP stand for?
- Content-Security-Policy
- Content-Security-Protocol
- Cookie-Security-Protocol
- Cross-Site Policy
In the context of XSS prevention, CSP stands for Content-Security-Policy. It is a security header that helps prevent XSS attacks by specifying which content can be executed on a web page.