第一章 The general role of an operating system is to: d a. None of the above b. Manage files for application programs c. Act as an interface between various computers d. Provide a set of services to system users Information that must be saved prior to the processor transferring control to the interrupt handler routine includes:b a. None of the above b. Processor Status Word (PSW) & Location of next instruction c. Processor Status Word (PSW) d. Processor Status Word (PSW) & Contents of processor registers One accepted method of dealing with multiple interrupts is to: 选择一个答案 a a. Define priorities for the interrupts b. None of the above c. Disable all interrupts except those of highest priority d. Service them in round-robin fashion In a uniprocessor system, multiprogramming increases processor efficiency by: 选择一个答案 d a. Increasing processor speed b. Eliminating all idle processor cycles c. All of the above d. Taking advantage of time wasted by long wait interrupt handling As one proceeds down the memory hierarchy (i.e., from inboard memory to offline storage), the following condition(s) apply: c 选择一个答案 a. Decreasing capacity b. Increasing cost per bit c. Increasing access time d. All of the above Small, fast memory located between the processor and main memory is called 选择一个答案 b a. None of the above b. Cache memory c. WORM memory d. CD-RW memory When a new block of data is written into cache memory, the following determines which cache location the block will occupy: 选择一个答案 a a. None of the above b. Write policy c. Cache size d. Block size The four main structural elements of a computer system are: 选择一个答案 b a. Processor, Registers, I/O Modules & Main M...
