A servlet can __________ to another servlet, JSP, or HTML page using the RequestDispatcher.
- communicate
- forward
- redirect
- transfer
A servlet can forward to another servlet, JSP, or HTML page using the RequestDispatcher.
JSP is converted into a servlet for execution, which is known as ______.
- JSP compilation
- JSP execution
- JSP translation
- Servlet initialization
JSP is converted into a servlet during the JSP translation phase, making it ready for execution.
How does redirection differ from request dispatching in servlets?
- Redirection happens on the client side
- Redirection is done by forward()
- Request dispatching involves changing the URL on the client side
- Request dispatching is faster
Redirection in servlets is done using the sendRedirect() method, while request dispatching is done using the forward() method.
_________ tracking involves appending session ID information to every URL.
- Cookie
- Request
- Session
- URL
URL tracking involves appending session ID information to every URL. This method is used to manage sessions in servlets by including the session ID in the URL.
How can you retrieve a servlet's initialization parameters in the init method?
- getInitParameter()
- getParameters()
- getServletConfig()
- getServletContext()
In the init method, you can use getInitParameter() to retrieve a servlet's initialization parameters.
To retrieve all the parameter names sent in a request, you can use the __________ method of the HttpServletRequest object.
- getParameterNames()
- getParameterValues()
- getRequestParameters()
- retrieveParameters()
The getParameterNames() method of the HttpServletRequest object is used to retrieve all the parameter names sent in a request.
Can servlet initialization parameters be changed at runtime?
- It depends on the servlet container
- No
- Only through a filter
- Yes
No, servlet initialization parameters cannot be changed at runtime. They are set during the servlet's initialization and remain constant throughout the servlet's lifecycle.
How is a cookie sent from a client to the server in an HTTP request?
- As a URL parameter
- As a part of the request body
- As a part of the request headers
- As a separate HTTP request
Cookies are sent from a client to the server as a part of the request headers in an HTTP request.
What is the impact of PCA on the interpretability of the original features?
- It depends on the data
- It doesn't affect interpretability
- It enhances interpretability
- It reduces interpretability
PCA typically reduces the interpretability of the original features. This is because each principal component is a linear combination of all the original features, making it difficult to understand how individual features affect the outcome.
What is the primary application of Bayes' Theorem in statistics?
- To calculate the mean of a data set
- To calculate the standard deviation
- To determine if two events are independent
- To update prior beliefs given new data
Bayes' Theorem is primarily used to update prior beliefs given new data. It's a way to go from a prior probability to a posterior probability, which is a more accurate estimate because it incorporates new evidence.