Networking Essentials / IP addressing
Lesson 10 of 30
Subnet masks
A subnet mask marks the network bits with 1s. 255.255.255.0 is 24 ones, so it's the same as /24.
Key points
- 255.255.255.0 = /24
- 255.255.0.0 = /16
- 255.255.255.128 = /25
Quiz · +10 XP
Which prefix matches the mask 255.255.0.0?
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