Submarine cables: The true backbone of the Internet (video documentary!)

Did you know that less than 1% of the global Internet traffic is transmitted via satellites? The actual workhorses are 1.1 million kilometers of submarine cables that lay on the bottom of the ocean floor. More than 400 of these cables connect the continents and make the Internet a really global thing. But how did they get there and how do they survive?

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I finally found a reason again to have a screensaver on my PC

Ever since our monitors support power-safe modes we had little reason to use animated screen-savers anymore. When we don’t use the computer the monitors are turned off and go dark. Safe the planet! And I have to confess that I didn’t install any fancy screensavers for years.

But the other day I came across a screensaver that by itself is reason enough to leave the monitor on a little longer. Apple had created an “Aerial” screensaver for Apple TV that uses gorgeous, slow moving aerial video shots from drones and helicopters as screensaver material. And some guy found out where and how the data is stored… Now there are versions for OSX, Windows and Linux.

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Which low-cost Windows 10 tablet is the best low-budget remote probe for PRTG Network Monitor?

Ten days ago I started using four ultra low-cost ATOM-processor based tablets (running under Windows 10) as monitoring stations (or “remote probes”, as we call them in the context of PRTG). Each of them was monitoring about 100 sensors in my home lan, including wifi quality and temperature. Here are my experiences of the first 10 days:

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How to monitor the system temperature of a Windows 10 system with PRTG

Three days ago I set up 4 low-cost Windows 10 tablets to become cheap monitoring stations in my private home. Yesterday I added custom sensors to monitor the quality of my wireless network.

Today I added sensors that are getting the built-in system temperature from the tablets.

Again I am using a Exe/Script Advanced Sensor with this Powershell script

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How to monitor wifi signal strength and speed with PRTG Network Monitor

Two days ago I set up 4 low-cost Windows 10 tablets to become cheap monitoring stations (we call them “remote probes”) for my personal instance of PRTG Network Monitor.

Today I have set up a custom sensor that reads out the wifi signal strength from the system, so I can now monitor the quality of my wireless network in 4 different areas of my house when I distribute the tablets in different rooms.

The sensor can be used with all Windows 10 PCs, laptops, or tablets, as long as they are connected to the network via wifi. It also displays the transmit and receive rate which the wifi module has chosen to connect to the access point and the wifi channel.

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