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Question 16 :

What is Web resource ?

Answer :

A static or dynamic object contained in a Web application that can be referenced by a URL.

Question 17 :

What is Web resource collection ?

Answer :

A list of URL patterns and HTTP methods that describe a set of Web resources to be protected.

Question 18 :

What is Web server ?

Answer :

Software that provides services to access the Internet, an intranet, or an extranet. A Web server hosts Web sites, provides support for HTTP and other protocols, and executes server-side programs (such as CGI scripts or servlets) that perform certain functions. In the J2EE architecture, a Web server provides services to a Web container. For example, a Web container typically relies on a Web server to provide HTTP message handling. The J2EE architecture assumes that a Web container is hosted by a Web server from the same vendor, so it does not specify the contract between these two entities. A Web server can host one or more Web containers.

Question 19 :

What is Web server provider ?

Answer :

A vendor that supplies a Web server.

Question 20 :

What is Web service ?

Answer :

An application that exists in a distributed environment, such as the Internet. A Web service accepts a request, performs its function based on the request, and returns a response. The request and the response can be part of the same operation, or they can occur separately, in which case the consumer does not need to wait for a response. Both the request and the response usually take the form of XML, a portable data-interchange format, and are delivered over a wire protocol, such as HTTP.