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router and a Modem.pdf
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What is the difference between a router and a
modem?
post by inovi
A modem and a router are two essential devices for connecting your home network to the
internet. However, they have different purposes and functions.
A modem (modulator-demodulator) is a device that converts the digital signals from your
computer into analog signals that can be transmitted over telephone lines or cable. It also
converts the analog signals from the internet back into digital signals that your computer can
understand.
A router is a device that creates a local area network (LAN) in your home. It allows multiple
devices to connect to the internet at the same time and also allows them to communicate with
each other.
Here is a table that summarizes the key differences between a modem and a router:
Feature Modem Router
Purpose
Converts digital signals to analog
signals and vice versa
Creates a LAN and allows devices to
communicate with each other
Connection To the internet To the modem and other devices on the LAN
IP address Public IP address Local IP addresses
Network
type
Wide area network (WAN) Local area network (LAN)
In most cases, you will need both a modem and a router to connect your home network to the
internet. However, some ISPs offer modem/router combos that combine both devices into a
single unit.
Here are some additional details about the two devices:
Modems: Modems come in a variety of types, including cable modems, DSL modems,
and fiber optic modems. The type of modem you need will depend on your ISP and the
type of internet service you have.
Routers: Routers also come in a variety of types, including wireless routers, wired
routers, and mesh routers. Wireless routers are the most common type of router and
allow you to connect to the internet wirelessly. Wired routers connect to your devices
using Ethernet cables. Mesh routers create a wireless mesh network that covers a wider
area than a traditional wireless router.