Review Questions
Use this chapter and your practical troubleshooting knowledge and skills to answer the following questions. The answers are located in Appendix A, “Answers to Review Questions.”
| 1: | Why do interface resets occur? |
| 2: | True or false: The ISDN signaling protocol is LAPB for the D channel. |
| 3: | The modem control leads on show interfaces s0 are quite helpful for troubleshooting. DCD keeps changing state. What else on the interface statistics would you expect to be increasing? Look at Example 9-13 if you need to see a display of the modem control leads. |
| 4: | Your router has a native ISDN BRI port. Is this device a TE1 or TE2? |
| 5: | What is the difference between Multilink PPP and dial backup? |
| 6: | Use the first HDLC scenario as a guide. Can you spot the ... |
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