四川大学操作系统选择题.pdf

第一章 The general role of anoperating system is to: 选择一个答案 a. Provide a set of services to system users b. Manage files for application programs c. Act as an interface between various computers d. None of the above Informationthat must besaved priortothe processortransferring controltothe interrupt handler routine includes: 选择一个答案 a. Processor Status Word (PSW) Contents of processor registers b. None of the above c. Processor Status Word (PSW) d. Processor Status Word (PSW) Location of next instruction Ina uniprocessorsystem, multiprogramming increases processorefficiency by: 选择一个答案 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 downthe memory hierarchy (i.e.,from inboard memory to offline storage),thefollowing condition(s) apply: 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 betweenthe processorand main memory is called 选择一个答案 a. Cache memory b. CD-RW memory c. WORM memory d. None of the above Whena new blockof data is written into cache memory,thefollowing determineswhich cache locationthe blockwilloccupy: 选择一个答案 a. Cache size b. None of the above c. Write policy d. Block size Thefour mainstructuralelements of a computersystem are: 选择一个答案 a. Processor, Registers, Main Memory System Bus b. None of the above b. d.Processor,Registers,I/OModulesMain Memory c. Processor, Main Memory, I/O Modules System Bus The two basictypes of processor registers are: 选择一个答案 a. None of the above b. User-visible and user-invisible registers c. Control and Status registers d. User-visible and Control/Status registers Address registers may contain 选择一个答案 a. Memory addresses of instructions b. Partial memory addresses c. Memory addresses of data d. All of the above A Control/Status registerth