Operating System Mcqs

Page No. 86

The host sets _____ bit when a command is available for the controller to execute.


awrite


bstatus


ccommand-ready


dcontrol


View Answer command-ready

The data-in register of I/O port is ____________


aRead by host to get input


bRead by controller to get input


cWritten by host to send output


dWritten by host to start a command



I/O hardware contains ____________


aBus


bController


cI/O port and its registers


dAll of the mentioned


View Answer All of the mentioned

What is the disk bandwidth?


athe total number of bytes transferred


b total time between the first request for service and the completion on the last transfer


cthe total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer


dnone of the mentioned



______ controller sends the command placed into it, via messages to the _____ controller.


ahost, host


bdisk, disk


chost, disk


ddisk, host


View Answer host, disk

What is the host controller?


acontroller built at the end of each disk


bcontroller at the computer end of the bus


call of the mentioned


dnone of the mentioned



A floppy disk is designed to rotate ___________ as compared to a hard disk drive.


afaster


bslower


cat the same speed


dnone of the mentioned


View Answer slower

When the head damages the magnetic surface, it is known as _________


adisk crash


bhead crash


cmagnetic damage


dall of the mentioned


View Answer head crash

The time taken for the desired sector to rotate to the disk head is called ____________


apositioning time


brandom access time


cseek time


drotational latency


View Answer rotational latency

The time taken to move the disk arm to the desired cylinder is called the ____________


apositioning time


brandom access time


cseek time


drotational latency


View Answer seek time

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