No.
The IRS, for instance, processes your tax return on computers that - quite wisely - do not connect to the internet. When your return is submitted, it ends up on storage media which is hauled on carts across the hall to computers that calculate your refund or amount due. You can imagine how much a clever virus writer could make otherwise.
A modem is a modulator/demodulator, which converts between electronic signals and the sounds transmitted by a POTS (Plain Old Telephone Signal) line. Those likes have a top speed of only about 53kbps - too slow for much of anything these days except FAX, which runs at 9600 bps.
Broadband "modems" are not really modems.
An internal modem is housed within the main computer. An external modem is on the outside of the computer and connected to the computer with a cable.
is a standard modem considered to be a computer hardware
No, not normally.
The modem and the computer are separate from each other. The modem is what brings Internet into your house, and then an Ethernet cable brings it to your computer or a router. It is not recommended that you shut off the modem.
Modem is a hardware connect your computer with the ISP, then your computer can surf online.
I want a more colorful modem. My modem is missing. Why can't my computer operate without a modem?
COMPUTER
modem is device which is used to connect the Internet to computer
A modem is used to connect the computer with internet service.
No it does not. If your computer is off, it cannot send or receive data via the modem !
Yes, this will connect a computer to a second port on your modem/router
Fax modem is modem than enables computer to send and received faxes. It can be internal and external.