The general role of an operating system is to:(B)
操作系统的一般作用是:(B)
Act as an interface between various computers
充当各种计算机之间的接口
Provide a set of services to system users
为系统用户提供一套服务
Manage files for application programs
管理应用程序的文件
None of the above
以上都不是
Information that must be saved prior to the processor transferring control to the interrupt handler routine includes:(B)
在处理器将控制权转移到中断处理程序程序之前必须保存的信息包括:(B)
Processor Status Word (PSW)
处理器状态字 (PSW)
Processor Status Word (PSW) & Location of next instruction
处理器状态字 (PSW) & 下一条指令的位置
Processor Status Word (PSW) & Contents of processor registers
处理器状态字 (PSW) &处理器寄存器内容
None of the above
以上都不是
One accepted method of dealing with multiple interrupts is to:(A)
处理多个中断的一种公认方法是:(A)
A、Define priorities for the interrupts
A、定义中断的优先级
B、Disable all interrupts except those of highest priority
B、禁用除最高优先级的中断以外的所有中断
C、Service them in round-robin fashion
C、以循环方式为他们提供服务
D、None of the above
D、以上都不是
In a uniprocessor system, multiprogramming increases processor efficiency by(B)
在单处理器系统中,多进程编程通过以下方式提高处理器效率 (B):
Increasing processor speed
提高处理器速度
Taking advantage of time wasted by long wait interrupt handling
利用长时间等待中断处理所浪费的时间
Eliminating all idle processor cycles
消除所有空闲处理器周期
All of the above
以上所有
As one proceeds down the memory hierarchy (i.e., from inboard memory to offline storage), the following condition(s) apply:(C)
当沿着内存层次结构向下移动时(即,从内部内存到离线存储),以下条件适用:(C)
Increasing cost per bit
增加每比特成本
Decreasing capacity
容量减少
Increasing access time
增加访问时间
All of the above
以上所有
Small, fast memory located between the processor and main memory is called(B)
位于处理器和主内存之间的小而快的内存称为 (B)
WORM memory
WORM 内存
Cache memory
缓存内存
CD-RW memory
CD-RW 存储器
None of the above
以上都不是
When a new block of data is written into cache memory, the following determines which cache location the block will occupy:(D)
当一个新的数据块被写入缓存内存时,以下决定该数据块将占用哪个缓存位置:(D)
A、Block size
A、区块大小
B、Cache size
B、缓存大小
C、Write policy
C、编写策略
D、None of the above
D、以上都不是
The four main structural elements of a computer system are:(C)
计算机系统的四个主要结构元件是:(C)
Processor, Registers, I/O Modules & Main Memory
处理器、寄存器、I/O 模块和主内存
Processor, Registers, Main Memory & System Bus
处理器、寄存器、主内存和系统总线
Processor, Main Memory, I/O Modules & System Bus
处理器、主内存、I/O 模块和系统总线
None of the above
以上都不是
The two basic types of processor registers are:(A)
处理器寄存器的两种基本类型是:(A)
User-visible and Control/Status registers
用户可见寄存器和控制/状态寄存器
Control and Status registers
控制和状态寄存器
User-visible and user-invisible registers
用户可见和用户不可见的寄存器
None of the above
以上都不是
Address registers may contain(D)
地址寄存器可能包含 (D)
A、Memory addresses of data
A、数据的内存地址
B、Memory addresses of instructions
B、指令的内存地址
C、Partial memory addresses
C、部分内存地址
D、All of the above
D、以上所有
A Control/Status register that contains the address of the next instruction to be fetched is called the:(B)
包含要获取的下一条指令地址的 Control/Status 寄存器称为:(B)
Instruction Register (IR)
指令寄存器 (IR)
Program Counter (PC)
程序计数器 (PC)
Program Status Word (PSW)
程序状态字 (PSW)
All of the above
以上所有
The two basic steps used by the processor in instruction processing are:(C)
处理器在指令处理中使用的两个基本步骤是:(C)
A、Fetch and Instruction cycles
A、Fetch 和 Instruction 周期
B、Instruction and Execute cycles
B、指令和执行周期
C、Fetch and Execute cycles
C、Fetch 和 Execute 周期
D、None of the above
D、以上都不是
A fetched instruction is normally loaded into the:(A)
获取的指令通常加载到:(A)
Instruction Register (IR)
指令寄存器 (IR)
Program Counter (PC)
程序计数器 (PC)
Accumulator (AC)
蓄能器 (AC)
None of the above
以上都不是
A common class of interrupts is(D)
一类常见的中断是 (D)
Program
程序
Timer
定时器
I/O
I/O (输入输出)
All of the above
以上所有
When an external device becomes ready to be serviced by the processor, the device sends this type of signal to the processor:(A)
当外部设备准备好由处理器提供服务时,设备会向处理器发送此类信号:(A)
A、Interrupt signal
A、中断信号
B、Halt signal
B、停止信号
C、Handler signal
C、分选机信号
D、None of the above
D、以上都不是