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89860 篇文章 33 次评论单选题：What is the purpose of system calls?
What is the purpose of system calls?@[B](1)A. System calls allow user-level processes to gain resources from the operati…
单选题：Overheads are always associated with an interrupt service, resul
Overheads are always associated with an interrupt service, resulting in worse performance. However, they do not include…
单选题：A program can be executed as a process only after it is loaded i
A program can be executed as a process only after it is loaded into______.@[D](1)A. hard disk B. floppy disk C. main…
单选题：_____ is to keep multiple jobs in memory simultaneously in order
_____ is to keep multiple jobs in memory simultaneously in order to keep the CPU busy. @[D](1)A. batch processingB. rea…
单选题：The following activities are what an operating system concerns e
The following activities are what an operating system concerns except for ? @[D](1)A. managing memoryB. providing an int…
单选题：system is able to manage and run multiple application programs.
system is able to manage and run multiple application programs. @[B](1)A. GUI B. Windows Applications C. Multitasking…
单选题：Suppose a shared printer is printing my job currently. While the
Suppose a shared printer is printing my job currently. While the printer is in use, you seek to print your job. Under an…
单选题：The first program that a computer runs when it is powered on or
The first program that a computer runs when it is powered on or rebooted is a _____ @[D](1)A. application program B.…
单选题：Which of these is not a component of the operating system?
Which of these is not a component of the operating system? @[A](1)A. Boot loader B. Process scheduler C. Memory mana…
单选题：Which of the following types of operating systems has the best j
Which of the following types of operating systems has the best job throughput ?@[B](1)A. Time sharing…