For customers with more demanding requirements (such as medium-to-large businesses, or other ISPs) can use higher-speed DSL (such as single-pair high-speed digital subscriber line), Ethernet, metropolitan Ethernet, gigabit Ethernet, Frame Relay, ISDN Primary Rate Interface, ATM (Asynchronous Transfer Mode) and synchronous optical networking (SONET). COUNT 4
QSN1 What type of customers would typically have more demanding requirements?  ANS1 medium-to-large businesses, or other ISPs QSN2 what does atm stand for in relation to internet providers?  ANS2 Asynchronous Transfer Mode QSN3 what is high-speed dsl used for?  ANS3 customers with more demanding requirements QSN4 what is SONET?  ANS4 synchronous optical networking