A full HTTP request message always begins with a Request-Line, and the Request-Line begins with a request method. After a client (e.g., a web browser) selects a value from a dropdown box on a web form and the web form is submitted to the web server, this type of HTTP message is to request the server to accept the web page as a new subordinate to the identified URL (i.e., the original web page the client received). The method in this HTTP message should not be GET and must be ____________. (one word)

Three intermediate HTTP systems include proxy, gateway, and ______. (one word in singular form)

If base64 MIME Transfer Encoding technique is used to encode the input of 24-bit raw text sequence 00110011 01111111 10011111, the final encoded character representation should be _______. (four ASCII characters with no spaces

The SMTP sender takes messages from the outgoing mail queue and transmits them to the proper destination host via SMTP transactions over one or more TCP connections to port ____ on the target hosts. (an integer)

Four elements comprise the DNS: domain name space, DNS database, name servers, and _________ . (one word in plural form

Each name server is configured with a subset of the domain name space, known as a ________ , which is a collection of one or more subdomains within a domain, along with the associated RRs. (one word in singular form

The ________ is the foundation protocol of the World Wide Web and can be used in any client/server application involving hypertext. (a 4-letter acronym of three words