The telephone company has placed a bridge-tap (half-tap) on all the pairs in a cable in preparation to reroute the cable. DSL customers are served by this cable. Three of the following five statements are correct. Which three of the following statements describes the possible effect of placing bride-taps on a DSL line? (multiple answer)
A.
It may not cause a problem, depending on the location and length of the half taps.
B.
It can cause the DSL modems to train at lower line rates.
C.
It will degrade upstream rates (lower frequencies), but will not degrade downstream rates (higher frequencies).
D.
DSL modems operating at 15 kft (4.5 km) of cable may not train after the bridge-taps are installed.
E.
Bridge-taps will not cause a problem for DSL service unless a telephone or modem is connected at the end of the new cable (half-tap) section, or unless the new section is shorted.