Study the following table and answer the questions based on it.

Expenditures of a Company (in Lakh Rupees) per Annum Over the given Years.

???? Item of Expenditure
SalaryFuel and TransportBonusInterest on LoansTaxes
1998288983.0023.483
19993421122.5232.5108
20003241013.8441.674
20013361333.6836.488
20024201423.9649.498
16. 

The floppy drive uses which DMA (direct memory access) channel?

A. 5
B. 4
C. 1
D. 9
E. 2

17. 

The DC voltage on most circuit boards is:

A. -12 volts
B. 0 volts
C. +5 volts
D. +12 volts
E. None of the above

18. 

A customer attached an external drive to his notebook computer but the computer is not recognizing it. What should be considered?

A. The cables are attached firmly
B. The external drive has been pre¬loaded with the appropriate software
C. The external drive was attached before the computer was on
D. The external drive is turned on
E. All of the above

19. 

"Parity" errors usually indicate bad memory.

A. True
B. False

20. 

What device protects against line deficiencies?

A. Surge protector
B. UPS
C. Logic probe
D. Capacitor
E. None of the above