In an attempt to compare the half-lives
of two radioactive elements, x and y, a
scientist set aside 400g of each. after 6
months, the scientist found that 25g of x
and 200g of y remained. which of the
following statements is true?
a. the half-life of y is twice the half-life
of x.
b. the half-life of y is four times the
half-life of x.
c. the half-life of y is eight times the
half-life of x
d. unless the exact time interval is
established, a comparison cannot be
made.

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.

that without the operating systems you would have to control and synchronize computer hardware.

answer inspecting packets in isolation from their context;