IS310 Old Question

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ttran1
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117900
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IS310 Old Question
Updated:
2011-11-21 03:43:06
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IS310 Exam
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Description:
Exam 3 Chap 5, 6, 7, 8, 9
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  1. Access time is typically stated in ____ for secondary storage devices and nanoseconds for primary storage devices.
    A. microseconds
    B. milliseconds
    C. picoseconds
    D. nanoseconds
    B. milliseconds
    (this multiple choice question has been scrambled)
  2. The speed at which data can be moved over a communication channel is called the channel's ____.
    A. cycle time
    B. data transfer rate
    C. access time
    D. clock speed
    B. data transfer rate
    (this multiple choice question has been scrambled)
  3. Which of the following is not a direct access storage device?
    A. RAM
    B. magnetic tape
    C. magnetic disk
    D. optical disk
    A. RAM
    (this multiple choice question has been scrambled)
  4. Which of the following statements is not correct?
    A. Data is written to a linear storage medium in a specific order and can be read back only in that same order.
    B. All primary storage devices and disk storage devices are random access devices.
    C. Access time for a random access storage device must be a constant.
    D. Parallel access can also be achieved by subdividing data items and storing the component pieces on multiple storage devices.
    C. Access time for a random access storage device must be a constant.
    (this multiple choice question has been scrambled)
  5. What type of RAM requires frequent refresh cycles to maintain its data content?
    A. synchronous
    B. dynamic
    C. static
    D. enhanced
    C. static
    (this multiple choice question has been scrambled)
  6. Software programs permanently stored in a read only memory (ROM) are called ____.
    A. firmware
    B. vaporware
    C. software
    D. hardware
    A. firmware
    (this multiple choice question has been scrambled)
  7. Average access time can usually be improved by ____ the data content of a disk.
    A. offsetting
    B. defragmenting
    C. randomizing
    D. recharging
    B. defragmenting
    (this multiple choice question has been scrambled)
  8. The ____ is the communication channel that connects all computer system components.
    A. peripheral processing unit
    B. bus arbitration unit
    C. system bus
    D. cache controller
    C. system bus
    (this multiple choice question has been scrambled)
  9. If the bus clock rate is 250 MHz, what is the duration of each bus cycle?
    A. 3 nanoseconds
    B. 2 nanoseconds
    C. 5 nanoseconds
    D. 4 nanoseconds
    D. 4 nanoseconds
    (this multiple choice question has been scrambled)
  10. Computer system components coordinate their activities by sending appropriate signals over the ____.
    A. address bus
    B. data bus
    C. control bus
    D. interrupt bus
    C. control bus
    (this multiple choice question has been scrambled)
  11. The CPU is always capable of being a(n) ____, thus controlling access to the bus by all other devices in the computer system.
    A. peripheral processing unit
    B. bus slave
    C. bus arbitration unit
    D. bus master
    D. bus master
    (this multiple choice question has been scrambled)
  12. The operating system normally views any storage device as a(n) ____, thus ignoring the device's physical storage organization.
    A. peripheral processing unit
    B. device controller
    C. linear address space
    D. multiple master bus
    B. device controller
    (this multiple choice question has been scrambled)
  13. During interrupt processing, register values of a suspended process are stored ____.
    A. on the stack
    B. in a buffer
    C. in a cache
    D. in a linear address space
    A. on the stack
    (this multiple choice question has been scrambled)
  14. During a(n) ____ operation, one or more register values are copied to the top of the stack.
    A. shift
    B. swap
    C. pop
    D. push
    D. push
    (this multiple choice question has been scrambled)
  15. The difference between a cache and a buffer is ____.
    A. buffers are usually much larger than caches
    B. buffers are only used for storage device accesses
    C. cache (but not buffer) content is intelligently managed
    D. data is removed from a cache as it is read
    C. cache (but not buffer) content is intelligently managed
    (this multiple choice question has been scrambled)
  16. To which type of data is lossy compression best suited?
    A. medical records
    B. financial transactions
    C. scientific data
    D. audio files
    D. audio files
    (this multiple choice question has been scrambled)
  17. An individual display element of a video display surface is called a(n) ____.
    A. dither
    B. bit
    C. point
    D. pixel
    D. pixel
    (this multiple choice question has been scrambled)
  18. ____ execute applications within an operating environment such as Java, a Web browser, or Windows Terminal Services.
    A. Photosensors
    B. Thin clients
    C. Multimedia controllers
    D. Video controllers
    C. Multimedia controllers
    (this multiple choice question has been scrambled)
  19. A monitor is connected to a(n) ____ which is, in turn, connected to the system bus.
    A. video controller
    B. cache
    C. DMA controller
    D. channel
    A. video controller
    (this multiple choice question has been scrambled)
  20. The number of refresh cycles per second is normally stated in ____.
    A. pixels
    B. Hertz
    C. dpi
    D. bytes
    B. Hertz
    (this multiple choice question has been scrambled)
  21. A(n) ____ is a set of rules and conventions for communication.
    A. phase
    B. communication protocol
    C. frequency
    D. message
    B. communication protocol
    (this multiple choice question has been scrambled)
  22. What modulation type encodes data by varying the magnitude of wave peaks within a carrier wave?
    A. phase
    B. amplitude
    C. frequency
    D. packet
    C. frequency
    (this multiple choice question has been scrambled)
  23. What type of signal can carry one of an infinite number of messages during one unit of time?
    A. discrete
    B. digital
    C. analog
    D. binary
    B. digital
    (this multiple choice question has been scrambled)
  24. ____ waves are the preferred method of digital data transmission over relatively short distances, for example,on a computer system bus.
    A. Digital
    B. Square
    C. Sine
    D. Cosine
    B. Square
    (this multiple choice question has been scrambled)
  25. What is the bandwidth (in Hertz) of a channel with a minimum frequency of 1,000 Hertz and maximum frequency of 10,000 Hertz?
    A. 9,000
    B. 11,000
    C. 5,000
    D. 10,000
    A. 9,000
    (this multiple choice question has been scrambled)
  26. What signal-to-noise ratio level is required for accurate data transmission?
    A. positive
    B. negative
    C. zero
    D. infinite
    A. positive
    (this multiple choice question has been scrambled)
  27. What type of transmission cable is immune to electromagnetic interference?
    A. Twisted pair
    B. Category 5
    C. coaxial
    D. Fiber optic
    D. Fiber optic
    (this multiple choice question has been scrambled)
  28. What transmission type uses all of a transmission medium's capacity to implement a single channel?
    A. baseband
    B. synchronous
    C. broadband
    D. asynchronous
    B. synchronous
    (this multiple choice question has been scrambled)
  29. The probability of incorrectly identifying good data as an error is called ____.
    A. Type II error
    B. parity checking
    C. Type I error
    D. block checking
    A. Type II error
    (this multiple choice question has been scrambled)
  30. A(n) ____ is a device such as a computer system, printer, or router attached to a network that can send or receive messages.
    A. datagram
    B. Ethernet
    C. token
    D. network node
    D. network node
    (this multiple choice question has been scrambled)
  31. A network using a physical ____ topology connects all nodes to a central point (e.g., a hub or wiring concentrator).
    A. ring
    B. bus
    C. logical
    D. star
    D. star
    (this multiple choice question has been scrambled)
  32. Which physical topology type connects each end node to two other end nodes?
    A. ring
    B. star
    C. cluster
    D. bus
    A. ring
    (this multiple choice question has been scrambled)
  33. Which of the following logical network topologies is most commonly in use when the CSMA/CD media access strategy is employed?
    A. bus
    B. physical
    C. ring
    D. star
    A. bus
    (this multiple choice question has been scrambled)
  34. A(n) ____ creates a new virtual LAN for each packet and destroys the virtual LAN as soon as the packet has reached its destination.
    A. switch
    B. hub
    C. bridge
    D. router
    A. switch
    (this multiple choice question has been scrambled)
  35. The ____ model defines a generic set of software and hardware layers for networks and distributed systems.
    A. Asynchronous Transfer
    B. Media Access Control
    C. Routing Information
    D. Open Systems Interconnection
    D. Open Systems Interconnection
    (this multiple choice question has been scrambled)
  36. The IEEE ____ standards define many parameters of network design and implementation.
    A. 208
    B. 802
    C. 288
    D. 820
    B. 802
    (this multiple choice question has been scrambled)
  37. Which network type is based on the IEEE 802.3 standard?
    A. TCP/IP
    B. SMDS
    C. Token Ring
    D. Ethernet
    D. Ethernet
    (this multiple choice question has been scrambled)
  38. The 2007 Nobel Physics prize was given for what area of research that has a direct impact on IS310 Unit 3 material?
    • man-made climate change
    • Intergovernmental Panel on Climate Change (IPCC) and Albert Arnold (Al) Gore Jr.
  39. How many bytes are required to store an uncompressed 1500 x 1000 true color screen image?
    ___________= _____
    1500*1000 = 1,500,000*3 byte/pixel = 4,500,000 bytes
  40. How does storage capacity growth compare to Moore's Law?
    The rate of storage capacity growth is roughly similar to the rate of the increase in transistor count, doubling every 18-24 months with no increase in unit cost.
  41. Why NAT not IPV6? (In your answer explain what each is.)
    • NAT (Network Address Translation) is the translation of an IP address used within one network to a different IP address known within another network.
    • NAT also conserves on the number of global IP addresses that a company needs and it lets the company use a single IP address in its communication with the world.
    • IPv6 ( Internet Protocol version 6) is an updated version of IPv4, developed to address problems with IPv4 with limited number of node addresses.
  42. Give examples of why long term storage can only be viewed as persistent not permanent.
    • Data stored on nonvolatile media might be lost because of compatible read/write devices becoming obsolete, which has happened with many older diskette and tape formats
    • technology obsolescence - technology device that long term unable to use
  43. From the class discussions: Why are ergonomically designed I/O devices important to incorporate when purchasing hardware? Give examples of such devices and how they help.
    • May cause sickness or problems cause by I/O devices such as back pain, eye strain, and carpal tunnel syndrome(CTS).
    • Ex. antiglare monitor that prevent eye strain due to brightness
    • Keyboard that prevent CTS or pain to your hand.
  44. In considerations of costs, capacity and reliability compare RAID levels 0 and 1.
    RAID levels 0 and 1 - simple in design, improve performance, require 2 disks, no parity
  45. In considerations of costs, capacity and reliability contrast RAID levels 0 and 1.
    • RAID level 0 -high risk of data loss, loss in fault tolerance, the failure of just one drive will result in all data in an array being lost, shouldn't be used in mission critical envir.
    • RAID level 1 - increase data reliability & data tolerance, highest system overhead, cost of small writes is twice as expensive than RAID 0, better speed, increase in cost will cause speed increase and capacity increase

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