Broadband services over copper wire include a variety of technologies with distinct advantages and limitations. Answer the four parts below about broadband services over copper wire. Part 1: What are some limitations of digital subscriber line (DSL) technology? Part 2: What are some examples of improvements of asymmetric digital subscriber line 2 (ADSL2) beyond regular DSL? Part 3: What are some of the methods that very high speed DSL 2 (VDSL2) uses that represent an improvement over DSL? Part 4: What is the purpose of Bonded DSL?