Chapter 15, Problem 42E

Explanation of Solution

Role of Internet Service Provider:

ISP is a company or organization that permits the user to access to the Internet.

• Internet access, internet transmit, domain name, registration and hosting, dial-up access are the services provided by ISP.
• All the three technologies such as phone modem, DSL, and cable modem require ISP to connect the home computer to the internet.

Phone modem:

Phone modem converts the computer data into analog signal to transfer through the telephone line and at the destination; it converts the analog signal to the computer data.

• It requires only phone connection between home computer and the computer and does not require any extra equipment to connect to the Internet.
• To connect to the Internet, dial up a computer that is permanently connected to the Internet, which is present at the Internet Service Provider...