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14. Choose three reasons why the networking industry uses a layered model. (Choose 3)
A. Allow changes in one layer to occur without changing other layers B. To get Gigabit speeds on LANs
C. Clarify what general functions is to be done rather than how to do it
D. To create filter tables on LANs E. Order network troubleshooting steps
Answer: A, C, E
The reasons to use a layer model is:
- 1 Clarify what general functions is to be done rather than how to do it - 2 Reduce the complexity of networking into more manageable sublayers
- 3 Enable interoperability using standard interfaces
- 4 Allow changes in one layer to occur without changing other layers - 5 Speed up network industry progress by allowing specialization
- 6 Allow for shortcut explanations to facilitate protocol comparisons - 7 Order network troubleshooting steps
- 8 Facilitate systematic troubleshooting
Chapter: 1
15. Why should you use a reference model when creating a network application?
A. To specify gigabit LAN speeds B. Enable interoperability using standard interfaces
C. Allow for shortcut explanations to facilitate protocol comparisons
D. To specify applications at any layer of the OSI model as needed
Answer: B, C
The reasons to use a layer model is:
- 1 Clarify what general functions is to be done rather than how to do it
- 2 Reduce the complexity of networking into more manageable sublayers - 3 Enable interoperability using standard interfaces
- 4 Allow changes in one layer to occur without changing other layers - 5 Speed up network industry progress by allowing specialization
- 6 Allow for shortcut explanations to facilitate protocol comparisons
- 7 Order network troubleshooting steps - 8 Facilitate systematic troubleshooting
Chapter: 1
16. Which of the following describe the steps of data encapsulation?
A. User information is converted to data, data to segments, segments to packets or datagrams, packets to
frames, and frames converted to bits.