Computer Hardware
The acronym HDI stands for:

Head to disk interference
Hard disk interface
Help desk interference
None of these
Half duplex interface

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Computer Hardware
After displaying the directory of a floppy disk, a different floppy is inserted into the drive. The contents of the original floppy continue to display regardless of the director requests on the other floppies placed in the drive. You remove the drive in question and install it into your test system, and it does not exhibit the problem. You should next replace the:

Floppy drive ribbon cable
System's power supply
System's floppy drive device driver
Original IDE controller
None of these

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Computer Hardware
Suppose that you have a the maintenance package identifies several possible field replaceable units (FRUs) that will resolve the problem. What should you do after turning the power off?

Replace all of the indicated FRUs at once and return the machine to the customer if the problem is resolved
Follow the same procedure as in ays replace the system board first if it is on the list of possible FRUs If multiple FRUs are indicated, then software is the most likely source of the problem
None of these
Replace the indicated parts, one at a time in the recommended sequence, until the problem is resolved; return unused FRUs to stock

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