Question

The Internet is a hierarchical structure linking different levels of service providers whose millions of devices supply all the interconnections. Which of the following lists the three levels outlined in the book, in order, from the companies that own the worldwide backbone of the Internet down through the companies that specialize in maintenance and support?

Answer 1

Step-by-step explanation:

These are the three diffrent levels listed below;

1) NSP (National Service Provider)

2) RSP (Regional Service Provider)

3) ISP (Internet Service Provider)