IS310 Exam 3 Make Up Quest

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Author:
ttran1
ID:
118272
Filename:
IS310 Exam 3 Make Up Quest
Updated:
2011-11-21 04:17:57
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IS310 Exam Make Up Quest
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Description:
Probable Question for Exam 3
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  1. TCP/IP model layers:
    • Application layer
    • Transport layer
    • Internet layer
    • Network Interface layer
    • Physical layer
  2. Open Systems Interconnection (OSI) model layers:
    • Application layer
    • Presentation layer
    • Session layer
    • Transport layer
    • Network layer
    • Data Link layer
    • Physical layer
  3. Physical topologies:
    • Mesh
    • Bus
    • Ring
    • Star
  4. Signal-to-noise (SN) ratio:
    • S/N ratio = signal power - noise power
    • S/N ratio = (initial signal power - attenuation) - (initial noise power + added noise)
  5. Formula for solving getting bandwidth:
    Bandwidth = Maxfreq - Minfreq
  6. Problem with Speech Recognition programs:
  7. Formula to figure out how many byte in a resolution display:
    ___________ = ____
    ___pixel*____pixel * 3 byte = ____byte
  8. Ex. of lossy compression:
    Ex. of lossless compression:
    • Ex. of lossy compression:
    • zip files, archives
    • Ex. of lossless compression:
    • audio and video data
  9. The difference between a cache and a buffer is:
    • data isn't automatically removed as it is read
    • cache are only used for storage device accesses
    • cache (but not buffer) content is intelligently managed
    • caches are usually much larger than buffers
    • a cach is used for bidirectional data transfer
  10. Functions of device controller:
    • Implement the bus interface and access protocols
    • Translate logical access into physical accesses
    • Enable several devices to share access to a bus connection
  11. Formula for bus cycle time:
    bus cycle time = 1/ (bus clock rate * 1,000,000)
  12. Formula for bus capacity:
    • bus capacity = data transfer unit * clock rate
    • bus capacity = bits * MHz
    • bytes per second = (bits/2= byte) * (MHz*1,000,000)
  13. Formula for average access delay:
    average access delay = HTH switch + TTT seek + rotational delay
  14. formula for average access time:
    average access time = average access delay + ( (time/rpm) /sectorpertrack)
  15. formula for sustained data transfer rate:
    1/time * bytes per sector = KB per second
  16. formula for max data transfer rate:
    1/time * bytes per sector = MB per second
  17. formula for data transfer rate:
    (1/ns * bits) * byte= bytes/second

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