Internet infrastructure - It is a collective term for all hardware and software systems that constitute essential components in the operation of the Internet.
Physical transmission lines of all types, such as wired, fiber optic and microwave links, along with routing equipment, the accompanying critical software services like the Domain Name System (DNS), Email, website hosting, authentication and authorization, storage systems, and database servers are considered critical Internet components.
If any of these systems and services were to be interrupted for a significant period of time on the Internet...as we know it would collapse.
Connection type- Dial-up internet access
Also called dial-up access, an analog Internet connection is both economical and slow.
Dial-up is an analog connection because data is sent over an analog, public-switched telephone network.
The modem converts received analog data to digital and vice versa.
Because dial-up access uses normal telephone lines the quality of the connection is not always good and data rates are limited.
Typical Dial-up connection speeds range from 2400 bps to 56 Kbps.
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