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A /0 is every IP address on the IPv4 internet. A /32 is exactly one IP Address. Everything you will ever configure sits somewhere ...

Every IP address between the network ID and the broadcast IP is a valid host address, which makes finding the usable range a ...

A Network ID on its own tells you almost nothing. The IP 131.75.0.0 is the network ID of /16 and a /24 -- but depending on the ...

Two IP addresses in every network are off limits: the Network ID and the Broadcast IP address. One identifies the group, the other ...

Every IP address belongs to a group, and that group has a name: the Network ID. Finding it takes one step: set every host bit to ...

Splitting an IP address into network bits and host bits exists for exactly one reason: to create groups of addresses. Every IP ...

A subnet mask has exactly one job: it decides which bits of an IP address are network bits and which are host bits. Change the IP ...

CIDR notation, a dotted decimal subnet mask, and a binary subnet mask are three different ways of writing the exact same thing.

AMA for crossing 280k Subscribers. Thank you all who have subscribed. These questions came from LinkedIn, Youtube ...

Four updates about what's going on and what's coming up for Practical Networking. Links mentioned in video: Update 1️⃣ ...