Which of the following is an appropriate statement concerning the security of a system that accesses a Web server from a browser?
a) Because the HTML documents that are created by CGI programs or servlets change their contents dynamically, the contents of the cache on the proxy server are never disclosed to any unauthorized user.
b) If provisions are made so that every user must initially log into a PC by using HTTP basic authentication when the same PC is to be used by multiple users, then no information can be disclosed to any unauthorized user even when the user is changed with the browser running.
c) The time required to respond to clients’ requests can not be improved by the use of a reverse proxy because a reverse proxy provides no capability for caching static contents.
d) The use of SSL ensures that the information exchanged between users and the Web server is never disclosed to any unauthorized user, even if a proxy server exists in the communication path.
Japan Information-Technology Engineers Examination Center (JITEC) 
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