Suppose there is exactly one packet switch between a sending host and a receiving host. the transmission rates between the sending host and the switch and between the switch and the receiving host are r1 and r2, respectively. assuming that the switch uses store-and-forward packet switching, what is the total end-to-end delay to send a packet of length l? (ignore queuing, propagation delay, and processing delay.)

Which of the following statements is incorrect in relation to processes: while, strictly speaking, at any instant of time, the cpu is running only one process, in the course of 1 second, it may work on several of them, giving the illusion of parallelism a process is just an instance of an executing program, including the current values of the program counter, registers, and variables processes can be created when an operating system is booted, created by the user, or a running process can create children processes there is a master process, which when started can last forever, and is not killable