Csci 512 Final Exam Summer 2011

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CSCI 512 Final exam Summer 2011
First Name:Last Name:SIN:Grade

True or False:

1. T/F – The underlying substrate in the magnetic disc is non-magnetic.

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2. T/F – Bits of data are written and read using a magnetic coil.

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3. T/F – Any external I/O connected to the computer is termed as a virtual I/O.

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4. T/F The common mode of communication is used IRA codes.

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5. T/F - One of the most important functions of the OS is scheduling processes/tasks.

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6. T/F - In terms of total control, the OS has the most control of the entire system operation.

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7. T/F – The ALU does not take any action if the output of an operation leads to excess bits.

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8. T/F – An eight bit word can represent up to 256 numbers.

ANS: T
9. T/F – Operand data can be logical data or addresses.

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10. T/F – Stacks are visible elements of the system that store program information.

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Multiple Choice Questions:

11. Redundancy is a built-in feature here
A. Magnetic disksB. RAID
C. Serial I/O tapesD. Optical disks

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12. The megnetoresistive sensor (MR) increases what capability in newer rigid disks?
A. Operating frequencyB. Area
C. Access timesD. None of the above

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13. Interfaces to memory and I/O devices are made through
A. Central SwitchB. Buses
C. Data linksD. All of the above

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14. What converts data from electrical to other forms of energy in an I/O module?
A. ConvertorB. Transformer
C. TransducerD. Arbiter

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15. Which of the following is not a function of the OS
A. Program execution B. Error correction
C. Data/Instruction access D. All of the above

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16. What part of the OS stores utilities or frequently accessed functions?
A. MemoryB. Registers
C. KernelD. None of the above

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17. The output of an ALU operation is stored at
A. ALU itselfB. Registers
C. CountersD. None of the above

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18. A type of integer representation
A. Sign-magnitudeB. Twos complement
C. BiasedD. All of the above

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19. After reading the Opcode, the source and destination operand data are stored in
A. ALU itselfB. Registers
C. CountersD. None of the above

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20. Symbolic representation of instructions use which type of addressing mode?
A. Register addressingB. Memory addressing
C. Immediate addressingD. All of the above

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Fill up the blanks:

21. For a read or a write the ____________ rotates beneath the head.

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22. ____________ are used between tracks to minimize errors and misalignments.

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23. The I/O module contains __________ functions for communication between processor and external devices.

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24. ____________ and _____________ determine the control and status of the device connected.

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25. The ______________ are used to implement frequently used functions.

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26. ________________ is the opposite of a batch processing system.

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27. ___________ defines the representation of floating point numbers.

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28. The decimal point in binary and decimal number representations are also called as __________.

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29. Instruction are represented as ___________ bits and is called __________.

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30. The decimal point in binary and decimal number representations are also called as __________.

ANS :
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