The http GET, PUT, and DELETE verbs are idempotent. What does the term "idempotent" stand for?

JSP implicit object 'application' is an object of which of the following class?

A programmer needs to update a live, running servlet’s initialization parameters so that the web application will begin to use the new parameters immediately. In order to accomplish this, which must be true (although not necessarily sufficient)? 1. The container must destroy and then reinitialize the servlet 2. The servlet’s constructor must retrieve the updated DD parameter from the servlet’s ServletConfig object 3. For each parameter, the DD must have a separate <init-param> tag 4. For each parameter, you must modify a DD tag that specifies the name of the servlet, the name of the parameters, and the new value of the parameter.

Which is valid about 'page' JSP directive?

Why do you get this error? NoClassDefFoundError: org.apache.commons.lang.StringUtils. 1. The given class could not be found. 2. The given class could be found, but something went wrong when initializing it 3. None of them

Which is a non-idempotent HTTP method

Objects which when compiled down are contained in (a) ____ file.

Once the JSP has been requested and the page is loaded and initialized, the JSP engine calls the:

Which is not a valid implicit object in a JSP?

Which method is abstract in HttpServlet?

Which statement correctly describe attribute 'buffer'?