1. What is the purpose of gateway in networking?
- Network gateways are tasked with linking networks by performing translation between different protocols and data formats at the network boundary.
- Companies may deploy gateways to connect the corporate LAN to the public Internet or to link different internal networks, such as IT and OT networks.
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2. What is the difference between a gateway and an access point?
- Both devices act as a wireless gateway that relays data between the wired and wireless networks.
- A router connects to a modem and allows wireless devices to access the internet.
- An access point, on the other hand, does not route computers. Instead, it bridges computers together.
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3. What is the difference between a router and a gateway?
- A router is a networking layer system that we can use for managing and forwarding the data packets into various computer networks.
- A gateway is very different. It is basically hardware or a device that acts as a gate among various available networks.
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4. Can subnet have multiple gateways?
- Yes, and it's normal for routed networks. However, you can only have one ACTIVE “default gateway” on most machines even though they can set a list.
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5. What are the benefits of a gateway?
- It uses a full-duplex mode of communication. It has the fastest data transmission speed amongst all network connecting devices.
- It can perform data translation and protocol conversion of the data packet as per the destination network's need.
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6. Can a router be connected to a gateway?
- You don't need to move the gateway, but you can use a longer (and very inexpensive) CAT5e or CAT6 cable to connect the router to the gateway's ethernet port so you can put it out in the open.
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7. How does gateway send data?
- Protocols include LPWAN, Wi-Fi, Bluetooth, and Zigbee, among many others. Gateways can communicate with sensors/devices over varying protocols and then translate that data into a standard protocol such as MQTT to be sent to the cloud.
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8. Is a gateway wireless or wired?
- Like a modem and a router, a gateway communicates with your Internet service provider (ISP), receives data, sends it to the router to translate and distribute to your wireless devices.
- In other words, with a gateway you get wireless Internet access (Wi-Fi) in your home or space.
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9. What later does the gateway operate at?
- The gateway operates at the network layer (Layer 3) of the OSI Model. The gateway is used when transmitting packets.
- When packets are sent over a network, the destination IP address is examined. If the destination IP is outside of the network, then the packet goes to the gateway for transmission outside of the network.
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10. Can different subnet have same gateway?
- No, you cannot. The gateway IP tells the system how to get to another subnet, and without it, packets won't leave the current subnet.
- A computer only knows how to talk to the other computers that are directly connected on the same subnet.
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11. How many gateways can be installed in a computer?
- You can install up to two gateways on a single computer: one running in personal mode and the other running in standard mode.
- An on-premises data gateway (personal mode) can be used only with Power BI. You can't have more than one gateway running in the same mode on the same computer.
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12. What happens if my computer doesn’t have a gateway?
- If you don't have a gateway in your LAN, you will be able to communicate with other devices in the same Lan through the power of switching. Downside of it is that you won't be able to communicate with anyone outside your local network.