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89860 篇文章 33 次评论单选题：UNIX treats I/O devices as ____________.
UNIX treats I/O devices as ____________.@[D](1)A. regular files B. directory filesC. indexed files D. special filesA…
单选题：To allocate the devices of system, each kind of devices should h
To allocate the devices of system, each kind of devices should have a piece of device control table and the system shoul…
单选题：The I/O control of disk devices mainly adopt following method。
The I/O control of disk devices mainly adopt following method。@[D](1)A. bit B. byte C. frame D. DMAA.bitB.b…
单选题：Which of the following device is the second partition of slave d
Which of the following device is the second partition of slave disk in IDE0?@[A](1)A. /dev/hdb2 B. /dev/sd1b2…
单选题：Which of the following is NOT true regarding a device that uses
Which of the following is NOT true regarding a device that uses interrupt-driven I/O？@[A](1)A. The CPU must continously…
单选题：Virtual devices are implemented by __.
Virtual devices are implemented by __. @[C](1)A. The channelB. The bufferC. SPOOLingD. The device controllerA.The…
单选题：A ________ is a buffer that holds output for a device, such as a
A ________ is a buffer that holds output for a device, such as a printer, that cannot accept interleaved data streams.@[…
单选题：____ present a uniform device-access interface to the I/O subsys
____ present a uniform device-access interface to the I/O subsystem, much as system calls provide a standard interface b…
单选题：______ present a uniform device-access interface to the I/O subs
______ present a uniform device-access interface to the I/O subsystem, while as system calls provide a standard interfac…
单选题：__________ is to cope with a speed mismatch between CPU and I/O
__________ is to cope with a speed mismatch between CPU and I/O devices.@[A](1)A. Buffering B. parallel C. cac…