Description: One, a multiple-choice questions, the introduction of modern operating systems (), so that concurrency and sharing become possible. A. Single-channel program B. disk C. Object D. program, () the operating system allows a host to connect multiple terminals, multiple users can use the computer interactively through the terminal at the same time. A. Network B. distributed C. timeshare D. Real-time, from the user' s point of view, the operating system (). A. user and the computer hardware interface between the B. Control and management of computer resources software C. rational organization of computer workflow software D. computer resources managers, it can execute instructions when the CPU is in the pipe state (). A. The computer system of all instructions B. limited to non-privileged instruction C. is limited to access pipe instruction
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