Q. Which buffer holds the output for a device?

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Q. Which one of the following connects high-speed high-bandwidth device to memory subsystem and CPU.

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Q. A process is moved to wait queue when I/O request is made with

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Q. In _______ information is recorded magnetically on platters.

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Q. The heads of the magnetic disk are attached to a _____ that moves all the heads as a unit.

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Q. The set of tracks that are at one arm position make up a ___________

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Q. The time taken to move the disk arm to the desired cylinder is called the :

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Q. The time taken for the desired sector to rotate to the disk head is called :

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

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

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Q. The host controller is :

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

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Q. The disk bandwidth is :

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Q. Whenever a process needs I/O to or from a disk it issues a ______________

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Q. If a process needs I/O to or from a disk, and if the drive or controller is busy then :

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Q. Consider a disk queue with requests for I/O to blocks on cylinders :
98 183 37 122 14 124 65 67
Considering SSTF (shortest seek time first) scheduling, the total number of head movements is, if the disk head is initially at 53 :

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Q. Random access in magnetic tapes is _________ compared to magnetic disks.

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Q. Magnetic tape drives can write data at a speed ________ disk drives.

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Q. On media that use constant linear velocity (CLV), the _____________ is uniform.

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Q. SSTF algorithm, like SJF __________ of some requests.

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