The internet is a stable connection that requires two fundamental devices. Most of these households have a modem and a router, but they do not comprehend the individual functions of the two. Every single device has a particular role in the network. They can be used together to provide the ability of a number of devices to communicate and connect to online services. Knowledge of their functions assists users with troubleshooting, selecting appropriate equipment and enhancing the network performance.
What a Modem Does

A modem is required to link home network to the internet service provider. It translates the signals provided by the provider to digital data devices that it comprehends. Cable modem, as an example of this, converts the signals of coaxial cable to Ethernet output. In the event without a modem, the home network is not connected to the rest of the internet.
How a Router Manages Local Traffic

A router is one that shares the internet connection with other devices. It allocates local IP addresses and routes information between phones, laptops and smart televisions and printers. The router directs the information to the appropriate device within the domestic network. This intra traffic control eliminates disputes among interconnected devices.
Why a Modem Alone Is Not Enough

A modem has one point of connection. Direct connection of one laptop to a modem is functional, but it only allows only one device to be accessed. There are many more than ten devices that are connected in modern households. A router opens up a single internet connection into numerous secure local connections.
Why a Router Alone Does Not Work

A router is not able to connect to an internet line. The router does not have any external data source when it is not connected to a modem. Internal communication is only handled by the router but not a modem. The devices are both necessary in order to have a complete home network.
How Data Travels Through Both Devices

As a user opens a web site the request is sent to the router first. The request is sent to the router to the modem. The request is passed through the modem onto the service provider. Response takes the same direction in the opposite direction reaching the appropriate device with the router.
Built In Security Functions

Majority of routers incorporate network address translation and firewall. These characteristics conceal the IP addresses that are private to the external networks. This level of protection is not offered by a modem. Having the two devices helps to minimize vulnerability to unauthorized access and network threats.
Wired and Wireless Connectivity

Routers offer WiFi connectivity and Ethernet. Detailed One Ethernet output is normally provided by the modem. The router transforms the single input into both wired and wireless links. It is compatible with smartphones and tablets along with smart home devices without the need of extra hardware.
Combined Modem Router Units

Combination units are provided by many service providers. These are devices that have modem as well as router in a single box. Although they are convenient, they are not very customizable. Individual equipment tends to offer better signal coverage and greater network controls.
Performance and Speed Considerations

The speed of the internet will rely on the hardware-capability and service plan. A-old fashioned modem is the one that reduces the maximum download and upload rate. Poor quality router minimizes the wifi range and stability. Service plan matching with device specifications helps in enhancing the overall performance.