A disk unit has 24 recording surfaces. it has a total of 14,000 cylinders. there is an average of 400 sectors per track. each sector contains 512 bytes of data. no. of pages : 3 no. of questions : 7
a. what is the maximum number of bytes that can be stored in this unit?
b. what is the data transfer rate in bytes per second at a rotational speed of 7200rpm?
c. using a 32 bit word, suggest a suitable scheme for specifying the disk address, assuming that there are 512 bytes per sector.
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vSuppose the population of the world is 6 billion, and that there is an average of 1000 communicating devices per person. how many bits are required to assign a unique host address to each communicating device? suppose that each device attaches to a single network and that each network on average has 10000 devices. how many bits are required to provide unique network ids to each network?
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