What is true about the DLCI field in the Frame Relay header?

A subscriber’s DSL service was not working correctly. The subscriber discovered that a DSL microfilter was accidentally installed between the DSL modem and telephone line instead of between the telephone and telephone line. What was the symptom observed by the subscriber?

The ATU-C refers to the:

A DSL line status report shows a high number of corrected and uncorrected errors. The line is configured at 4 milliseconds interleave delay and 4 FEC check-bytes. To reduce the number of uncorrected errors without a detailed analysis of whether the errors are continuous or “bursty”, which of the following should provide improved error correction?

The following are wire sizes used in telephone company cables. What will allow the best overall DSL performance?

Which three are major inhibitors of ADSL line quality? (multiple answer)

What will significantly degrade DSL performance, regardless of DSL rate or line length?

The function of the ATU-R is:

What best describes RADSL?

A DSL modem will not train up. It is on a “shared line” (DSL and POTS), and the telephone on the shared line is working normally. Nine of the ten conditions are possible causes of the symptom, and one is not. What is NOT a possible cause of the problem?