Answers to the review questions can be found in Appendix A, "Answers to Review Questions."
| 1: | Name two added features in ITU-T V.92 standard, compared to ITU-T V.90. |
| 2: | Name two limiting factors for the ability of the modem to connect. |
| 3: | If the SNR is 40, how many times higher is the signal strength than noise strength? |
| 4: | How would you troubleshoot a case in which a pad of 3dB might be the root of the problem? |
| 5: | If AMI needs to transmit the octet 1 0 0 1 0 1 1 0, and the first mark is +, what are the next marks? Write the entire octet. |
| 6: | If the preceding LSB in B8ZS is positive, what is the combination for 00000000? |
| 7: | What is the main disadvantage of dial-back authentication? |
| 8: | Name the main phases of the PPP protocol. |
| 9: | What is the value 0xC223 in the protocol field of PPP? |
| 10: | Which protocol in the PPP suite establishes and configures the data-link connection? |
| 11: | What is the address field value of the PPP protocol? |
| 12: | Which packet types of LCP terminate the data-link connection? |