The Internet Is a Hierarchical Structure Linking Different Levels of Service

question 81

Multiple Choice

The Internet is a hierarchical structure linking different levels of service providers whose millions of devices supply all the interconnections.The three levels outlined in the book from the top down include _____________________.

• A) new system provider (NSP),current system provider (CSP),and order entry system provider (OSP)
• B) national service provider (NSP),regional service provider (RSP),and Internet service provider (ISP)
• C) net server point (NSP),radio server point (RSP),and Internet server point (ISP)
• D) None of these choices