June 25, 2022

Network components explained. What Are Modems, Hubs, Switches, and Routers? -H2S Media

We all come across a number of terms related to networking. Hubs, switches, modems, routers and many more. But it’s the same! If so, then why the different names! Are they interdependent! We will find it here. As a home user, who just turns on the computer to calculate expenses, things might not matter to them. But things are worth knowing, lest you need them in the future. But if you’re interested in networking, clear all of your concepts here. Confusion arises when terms are used interchangeably. In the case of a home network, many network components are integrated into a single device. This is yet another reason to mess things up and create confusion.

I will discuss modems, hubs, switches, and routers in this article. Some protocols will not be outdone either. So without further ado, let’s get started.

What are modems?

Don’t say you haven’t heard of it. All Internet users have met him at some point in their life. Modem is the abbreviation for Modulation and Startodulation. It is widely used to carry data over conventional telephone lines. Conventional telephone lines are analog. But our computers and laptops are bad at it. They can only understand digital. The modem stays between a telephone line and a computer to modulate and demodulate signals whenever needed.

What is Hub?

Hub is a device for sending a single packet to multiple LAN segments. It’s like giving a speech, and anyone can listen to it. When a packet is sent to the hub, it is copied to all ports. It was useful in different scenarios. Hubs operate in Layer 1 of the OSI Reference Model, as there are no complex routing algorithms. The performance is not very good either. Hubs are now being replaced by switches, which are smart enough.

What is Switch?

As the name suggests, it is used for switching purposes. A switch is used to transfer packets within a network, between different LAN segments. The task is done intelligently. This means that you can define a target for the packet. Once you have defined the path of a packet, the routing will be handled by the switch. The switches allow you to easily transfer files from your computer to a laptop over a local network. Switches operate in Layer 2 or Layer 3 of the OSI Layer. Switches are like giving different tips to everyone in a group. Each code varies. But it is distributed and managed by you.

What are routers?

I’m sure you came across this term. We often go to the computer store and ask for a wireless router. But this is done by not knowing exactly what a router is doing. A router is a network component that connects multiple networks. It may be helpful to connect your local network to your friend’s. Because routers can connect two different networks, they are often used to access the Internet.

Usually several devices are connected to a local network. A router, when connected to the LAN, can be used to access the Internet on all segments of the LAN. It routes packets to and from the Internet to LAN segments. This is done through a service called NAT. I will discuss it.

What is Network Address Translator (NAT)?

Network Address Translator is used in routers. It is programmed to route packets to and from the Internet to many LAN segments. NAT is like an intelligent receptionist in a hotel. A receptionist knows where requests are coming from and where to deliver a meal. The same goes for NAT. NAT uses DHCP, which automatically assigns an IP address to different LAN segments.

What is DHCP?

DHCP also simplifies connection to a Wi-Fi network. You just need the network name (SSID) and password. By simply entering, you can get an IP address to connect to the internet. This is done using DHCP. DHCP stands for Dynamic Host Configuration Protocol. You also don’t need to mess with network settings when connecting to your router using an Ethernet cable. Just plug in and surf. Everything is possible thanks to DHCP.

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