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PRO TIP Block youtube.com at the DNS level — Pi-hole, NextDNS or your hosts file — but allow youtube-nocookie.com and i.ytimg.com. These tutorials keep playing; the rabbit hole does not.

Learning without distractions

Seven Second Subnetting – CompTIA Network+ N10-009 – 1.7

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Network+ Training Course Index: https://professormesser.link/n009videos
Network+ Course Notes: https://professormesser.link/n009notes

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Some network administrators need to subnet quickly with a minimal amount of math. In this video, you’ll learn about the seven second subnetting shortcut for IP subnetting.
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