四川大学操作系统选择题.docx

第一章
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The general role of an operating 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 puters 
d. None of the above 
Information that must be saved prior to the processor transferring control to the interrupt handler routine includes:
选择一个答案
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 
In a uniprocessor system, multiprogramming increases processor efficiency 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 down the memory hierarchy (., from inboard memory to offline storage), the following 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 between the processor and 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 
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. Cache size 
b. None of the above 
c. Write policy 
d. Block size 
The four main structural elements of puter system are: 
选择一个答案
Processor, Registers, Main Memory &
System Bus 
b. None of the above 
d. Processor, Registers, I/O Modules & Main Memory 
Processor, Main Memory, I/O Modules &
System Bus 
The two basic types 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