The ADT table uses a search key to identify its items.

Which statement about the star topology is true?

A) Cost is a major consideration when wiring a star topology. B) The star topology is the most difficult to troubleshoot. C) More cable is used in wiring a star topology than other topologies. D) All devices are attached to one long trunk line that connects to the server.

Unlike standard HTTP requests, which usually replace the entire page in a web browser, the ____________________ object can be used to request and receive data without reloading a web page.

Fill in the blank(s) with the appropriate word(s).