How can hosts in private LANS communicate through the Internet?

What are the two key technologies that make communication over the Internet possible?

13. On the Internet, how can an ISP reach another ISP?

14. What is the range of data transmission rates for the T-series standards?

15. Name three commonly used wireless transmission media.

16. Name three types of commonly used wireless technologies.

17. Why do we need modulation?

18. What is the difference between a hub and a switch?

19. What are the advantages of a Layer 3 switch?

20. What are the reasons for an edge aggregation router to use MPLS?