Where can page numbers appear in header , in footer, inside labels , at the top of columns or the bottom of colums

in footer

Explanation:

It When you look at a book for example the page number is always in the bottom which the footer can allow you to add the page number

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.