1. which of the following items is considered a technological advance?

. remote control
. dvd
. x-ray machine
. all of the above

3. how is technology best defined?

. the practical use of science and knowledge
. the communication of ideas
. a branch of science
. an independent study using graphs and charts

given the options, i would say your best bet is c. the modem supports up to 56 kbps, which is too low for video streaming. dial up modems use actual phone lines, which only can go up to 56 kbps as that's more than sufficient for traditional phone calls. this is also the reason why when a dial-up modem connects, you hear all those sounds. it's literally using the phone line to establish a connection.