CNE250 Networking Technologies

Review for Second Quiz
 
  1. Which three networking connectivity devices are ordinarily related to the OSI Data Link layer?

  2. What is the difference between logical topology and physical topology?

  3. What is the term for a combination and injury of signals when devices transmit simultaneously?

  4. What are three ways to provide media access?

  5. What does CSMA/CD stand for?

  6. Which system allows any ready device to transmit instantly on a first-come, first-served basis?

  7. Which system passes a small data frame among devices in order to permit a device to transmit?

  8. With what type of address is the Data Link layer concerned? Give another name for this address.

  9. What are three methods of transmission synchronization?

  10. What is one common way of detecting errors in asynchronous transmissions?

  11. What error detection method is commonly used in synchronous transmission?

  12. Explain how isochronous transmission methods retain their clocking.

  13. Identify three levels of connection services, seen in three different chapters.

  14. What do you call a message that indicates a data frame or packet has been received?

  15. What is the primary objective of the Network layer?

  16. What are two Network layer-addressing techniques?

  17. What is an address that identifies an upper-layer software process or protocol, also known as a port or a socket?

  18. What are three methods of internetwork switching?

  19. In ____, messages are divided into small packets that are stored in memory and routed one-by-one through the network.

  20. What do you call a procedure that identifies routes and maintains route tables?

  21. In calculating the cost of reaching a destination, routing algorithms use the _____expense and the _______and ________counts.

  22. What are two methods that route discovery employs? Which of these two produces more network traffic?

  23. What are two mechanisms that distinguish conversations used by the Transport layer?

  24. What do you call the breakdown of large messages or the grouping of small messages into transmittable segments?

  25. Define simplex dialog. Give an example of a simplex dialog.

  26. Define half-duplex dialog and give an example

  27. Define full-duplex dialog and give an example.

  28. List three tasks into which the Session layer's functions are separated.

  29. What term is used to indicate the act of terminating a communications session purposely?

  30. What is the purpose of byte-order translation? Which layer performs the translation?

  31. What is character-code translation?

  32. Which method uses a secret key to scramble data prior to transmission and unscramble it upon receipt?

  33. Which method matches a known value to a secret key, which the receiver uses along with its own secret key, to unlock the decryption value?

  34. How do servers inform clients of available network services?

  35. What are three categories of network service use?

  36. How does OS call interception function?

  37. Relate these terms to the seven layers of the ISO-OSI model: Physical Connections, Reliable Transport, and Services.

  38. In what two layer headers might you find service addresses?

  39. Must all networks support all seven layers of the ISO model? Why or why not?

  40. You should be able to recognize a drawing, or draw an example of the five physical topologies.

  41. What ISO model layer should each of these devices be associated with:
    1. Repeaters
    2. Active Hubs
    3. Network Interface Cards
    4. Bridges
    5. Switches
    6. Routers
    7. Gateways



  42. What does the IEEE 802.1 standard address? What ISO model layers would it relate to?

  43. What does the IEEE 802.2 standard address? What layer of the ISO model does this relate to?

  44. What does the IEEE 802.3 standard address? What network implementation does this relate to? Is this standard media specific?

  45. What does the IEEE 802.4 standard address? What network implementation does this relate to?

  46. What does the IEEE 802.5 standard address? What network implementation does this relate to?

  47. What is significant about the IEEE 802.6 standard? What sorts of traffic are supported?

  48. What major networking concept is supported by IEEE 802.7?

  49. IEEE 802.8 supports the use of what medium?

  50. What is significant about IEEE 802.9? Is it like a variation of something else?

  51. What services are supported by IEEE 802.10? What network layer would this map to?

  52. What sort of LANs are supported by IEEE 802.11?

  53. What new authority is granted to a piece of hardware in IEEE 802.12?

  54. What do the three parts of an Ethernet implementation's name generally represent?

  55. What is a jam signal?

  56. What should be attached to each end of a coaxial segment? What should be done to one and only one end?

  57. Define the 5-4-3 rule. What media type does it apply to?

  58. What is the minimum distance allowed between T-connectors? What media type are they used with?

  59. What is a collision domain?

  60. What physical topology is often used for Token Rings? What is an MSAU? How are MSAUs connected to each other?

  61. What is beaconing? What is autoreconfiguration?

  62. What are the WAN protocols listed in Chapter 2?

  63. Which WAN protocol for IP networks is an improved version of another WAN protocol? Why is it better?

  64. What are the three kinds of channels you would expect to find in an ISDN network?

  65. What layers of the ISO model does the X.25 protocol map to? What kind of traffic is this protocol limited to?

  66. What is an ATM cell? What media types can be used with ATM?