Appendix A. Answers to Review Questions
What are the layers of the OSI model?
Answer: Application, presentation, session, transport, network, data link, physical. Remember the sentence “All people seem to need data processing.”
Which layer determines path selection in an internetwork?
Answer: Layer 3, the network layer.
What types of things are defined at the physical layer?
Answer: Voltage levels, time of voltage changes, physical data rates, maximum transmission distances, physical connectors, and type of media.
What is one method of mapping network addresses to MAC addresses?
Answer: ARP, Hello, predictable.
Which includes more overhead, connection-oriented or connectionless services?
Answer: Connection-oriented. ...