Hold your phone horizontally

IPv4 Subnet Quiz Wizard

New Quiz Settings

This Quiz will challenge your knowledge of IPv4 subnetting by displaying a random IPv4 address and CIDR and ask you to provide various answers which will be validated after each question. Restrict yourself to using only pen/paper to properly simulate exam conditions.

There is no time limit but each question will be timed to provide you feedback and challenge you to improve your performance in future quiz sessions. When you are ready, click the button to start. Good luck!

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Quiz Results
#IPv4 / CIDRResultDuration

Bitstream (click on bits to flip between 0 and 1)
Subnet Mask (in dotted-decimal format)
This Subnet (in dotted-decimal format)
IP Address Info
Subnet Info (numbers only without commas)