MGT Fall 2009 Exam #1
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1 MGT Fall 2009 Exam #1 Short Answer (5 points each): 1. What is the data transfer rate of a disk drive with a 4 ms. average access time and 512 byte sector size? 2. Write a name or brief description for each label (A-E) in the following disk drive figure. A: B: C: D: E: 3. In each blank of the following table, write the word better, worse, or same, as appropriate. Characteristic 64-bit IEEE floating point format 128-bit IEEE floating point format Compactness Numeric Range Accuracy/Precision Ease of Manipulation Standardization MGT 337 (Fall 2009) Exam #1 Page 1 of 9
2 4. Why isn t flash RAM commonly used to implement primary storage? 5. List the three electro-mechanical factors that determine average access delay of a disk storage device. Which is typically the most significant component of average access delay? Which is typically the least significant? 6. Which format, 32-bit twos complement or 32-bit IEEE floating point, should a programmer choose to represent monetary values? Why? MGT 337 (Fall 2009) Exam #1 Page 2 of 9
3 7. What is/are the difference(s) between ASCII and Unicode? 8. Briefly describe the process/technology used by dye-based optical storage devices/media to write content to a disc. 9. Assuming all other things are equal, how much faster will a CPU with 1000 general-purpose registers per ALU execute a typical desktop application program compared to a CPU with 100 general-purpose registers per ALU? MGT 337 (Fall 2009) Exam #1 Page 3 of 9
4 10. How does system software differ from application software? List at least two specific examples of system software. 11. What types of applications are typically executed on a supercomputer? What types of applications are typically executed on a mainframe? 12. Describe what the CPU does during a fetch cycle. MGT 337 (Fall 2009) Exam #1 Page 4 of 9
5 Medium Length Answer(10 points each): 13. Assume that Intel currently manufactures a 64-bit 3 GHz dual-core microprocessor (code-name X11) on a 45 nanometer fabrication process in Rio Rancho. Assume further that a new 25 nanometer process has just been deployed in the same building. Assume that Intel plans to move production of X11 to the new process without making any changes to the structure of the chip (i.e., same number of transistors and wires in the same physical arrangement). List at least 3 operating, performance, or other characteristics of X11 that should improve as a result of moving its production to the 25 nanometer process? For each characteristic, briefly explain why you expect improvement. MGT 337 (Fall 2009) Exam #1 Page 5 of 9
6 14. What is a cluster? What is a grid? Which is more likely to be used by an organization that executes many numerical simulation programs on a daily basis? Which is more likely to be used by an organization that uses computers primarily for ordinary business functions but executes a large marketing research application once per week? MGT 337 (Fall 2009) Exam #1 Page 6 of 9
7 15. Long-term data storage requirements are estimated to double every two to three years yet the market for magnetic tape drives and tapes is stagnant or shrinking. How/why is this so? MGT 337 (Fall 2009) Exam #1 Page 7 of 9
8 16. Assume that AMD Corporation, in an effort to leapfrog Intel s CPU technology, is designing a new 128- bit CPU code-named Gigantor to be released in Assume that Gigantor will employ 128-bit memory addresses and that all instructions executed by all the ALUs will operate on 128-bit data items? Assume further that improvements in AMD s fabrication technology will enable it to produce Gigantor with clock rates, cache sizes, and an instruction set equivalent to the 64-bit CPUs that Intel plans to release in a. What performance gains will a typical user see in laptops and desktops employing Gigantor as compared to Intel s latest CPU offerings? Briefly explain why gains will or won t be realized. ( 5 points) b. Will there be a demand for Gigantor CPUs in the midrange or mainframe market? If so, for what types of applications will users buy Gigantor-based midrange and mainframe computers? Why? (5 points) MGT 337 (Fall 2009) Exam #1 Page 8 of 9
9 Scratch Sheet MGT 337 (Fall 2009) Exam #1 Page 9 of 9
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