I/O is a _________ in system performance.
A. Major factor
B. Minor factor
C. Does not matter
D. None of the mentioned
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A ________ is a full duplex connection between a device driver and a user level process.
A. Bus
B. I/o operation
C. Stream
D. Flow
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Windows NT uses a __________ implementation for I/O.
A. Message €? passing
B. Draft €? passing
C. Secondary memory
D. Cache
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The kernel data structures include ____________
A. Process table
B. Open file table
C. Close file table
D. All of the mentioned
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The ________ keeps state information about the use of I/O components.
A. Cpu
B. Os
C. Kernel
D. Shell
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Spooling ____________
A. Holds a copy of the data
B. Is fast memory
C. Holds the only copy of the data
D. Holds output for a device
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Caching ____________
A. Holds a copy of the data
B. Is fast memory
C. Holds the only copy of the data
D. Holds output for a device
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Caching is ________ spooling.
A. Same as
B. Not the same as
C. All of the mentioned
D. None of the mentioned
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Buffering is done to ____________
A. Cope with device speed mismatch
B. Cope with device transfer size mismatch
C. Maintain copy semantics
D. All of the mentioned
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An asynchronous call ____________
A. Returns immediately, without waiting for the i/o to complete
B. Does not return immediately and waits for the i/o to complete
C. Consumes a lot of time
D. Is too slow
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Word of the Day
26 Aug
Flare
burn or shine with a sudden intensity.
چمکنا، شعلہ، بھڑک اٹھنا

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