The deployment descriptor file used to configure a servlet in a web application is named __________.
- servlet-config.xml
- web-app.xml
- web-config.xml
- web.xml
The deployment descriptor file used to configure a servlet in a web application is named web.xml.
What considerations should be made when handling large form data submissions in a servlet?
- Ensure the servlet has a large buffer size.
- Increase the maximum allowed request size.
- Use GET requests instead of POST requests.
- Use compression to reduce data size.
When handling large form data submissions in a servlet, considerations include increasing the maximum allowed request size, optimizing buffer sizes, and using compression to reduce data size.
What is the default behavior of the service() method in the HttpServlet class?
- Forwarding the request to the init() method.
- Invoking the doGet() method.
- Invoking the doPost() method.
- Providing an HTTP 405 (Method Not Allowed) error.
The default behavior of the service() method in the HttpServlet class is to provide an HTTP 405 error (Method Not Allowed) response, indicating that the requested HTTP method is not supported.
Which interface provides the functionality to get initialization parameters in servlets?
- ServletConfig
- ServletContext
- ServletInitializer
- ServletParameters
The ServletConfig interface provides the functionality to get initialization parameters in servlets.
If you need to set a custom header in an HTTP response, which HttpServletResponse method should you use?
- addHeader(String name, String value)
- appendHeader(String name, String value)
- setHeader(String name, String value)
- writeHeader(String name, String value)
To set a custom header in an HTTP response, you should use the setHeader(String name, String value) method of the HttpServletResponse interface.
In a scenario where cookies are disabled, which session tracking technique can be employed?
- HTTP Session
- Hidden Form Fields
- IP Address Tracking
- URL Rewriting
URL Rewriting is a session tracking technique that can be employed when cookies are disabled. It involves appending session information to URLs.
How does a servlet differentiate between GET and POST requests?
- By request headers
- By session cookies
- By the request URL
- By the request body
A servlet differentiates between GET and POST requests by examining the request body. GET requests append data to the URL, while POST requests send data in the request body.
How is the ServletContext obtained in a servlet?
- Using the getServletConfig() method of the HttpServletRequest object.
- Using the getServletConfig() method of the ServletContext object.
- Using the getServletContext() method of the HttpServletRequest object.
- Using the getServletContext() method of the ServletConfig object.
The getServletContext() method of the HttpServletRequest object is used to obtain the ServletContext in a servlet.
How can a servlet handle form data containing non-ASCII characters?
- Convert the data to ASCII
- Set the character encoding using setCharacterEncoding()
- This is not possible
- Use the getEncoding()
To handle form data containing non-ASCII characters, you should set the character encoding using the setCharacterEncoding(String encoding) method of the HttpServletRequest object.
What is the maximum size of data that can be sent using the GET method in a servlet?
- 2 GB
- 256 KB
- Limited by server configuration
- No specific limit
There is no specific limit imposed by the HTTP specification on the size of data that can be sent using the GET method. However, practical limitations may exist, and server configurations can impose their own limits.
Which of the following is a Java class that extends the capabilities of the servers?
- Applet
- JSP
- JavaBean
- Servlet
A Servlet is a Java class that extends the capabilities of servers, providing a way to generate dynamic content on the web.
What method is commonly used to send a redirect response to the client in servlets?
- forwardResponse()
- redirectResponse()
- sendForward()
- sendRedirect()
The sendRedirect() method is commonly used in servlets to send a redirect response to the client, specifying the new URL to which the client should be redirected.