Can someone help explain how to solve the question below (Please show your work)

Question

Can someone help explain how to solve the question below (Please show your work):

  A 32-bit computer has two selector channels and one multiplexor channel. Each selector channel supports two magnetic disk and two magnetic tape units.  The multiplexor channel has two line printers, two card readers, and ten VDT terminals connected to it.  Assume the following transfer rates.

            Disk drive                               800 Kbytes/s

            Magnetic tape drive                200 Kbytes/s

            Line printer                             6.6 Kbytes/s

            Card Reader                            1.2 Kbytes/s

            VDT                                        1 Kbytes/s

Estimate the maximum aggregate I/O transfer rate in this system

Explanation / Answer

Dear User, From given data, Each selector channel supports two magneticdisk and two magnetic tape units.Only one deviceat a time can be services on a selector channel.Thus So total magnetic tape drive=4*200 = 800 KBytes/s The multiplexor channel has two line printers, twocard readers, and 10 VDT terminals connected. Thus, Total line printers=2*6.6 =13.2 KBytes/s Total card readers=2*1.2 =2.4 KBytes/s Total VDT=10*1 =10KBytes/s Therefore,the maximum aggregate I/O transferrate=800+800+13.2+2.4+10 =1625.6 KBytes/s

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