For the following questions, mark the answers true (T) or false (F).
(1) An operating system is the core part of the system software of a computer.
(2) Multiprogramming is the technique of using multiple CPUs to run programs.
(3) CPU scheduling determines which programs are in memory.
(4) Data transfer rate is the speed with which data is moved from one place on the network to another.
(5) Ethernet is based on a ring topology.