/24 means mask 255.255.255.0 (first 24 bits network).
And always verify – a ping is round trip.
The story behind Net Practice 42 is not well-documented, but I can give you an overview of what Net Practice is and its connection to the number 42. netpractice 42 tutorial
If your network is 192.168.1.0/24 , all computers must start with 192.168.1 . The last number can change from 1 to 254. The Magic Numbers Here is a cheat sheet for the most common masks: /24 = 255.255.255.0 (254 usable IPs) /25 = 255.255.255.128 (124 usable IPs) /26 = 255.255.255.192 (62 usable IPs) /27 = 255.255.255.224 (30 usable IPs) /28 = 255.255.255.240 (14 usable IPs) /29 = 255.255.255.248 (6 usable IPs) /30 = 255.255.255.252 (2 usable IPs - perfect for routers!) 🛠️ Step-by-Step Level Guide Levels 1 to 3: The Basics
/24 (This means the first 24 bits are turned "on" as 1s). Quick CIDR to Decimal Conversion Chart: /24 = 255.255.255.0 (256 total IPs, 254 usable hosts) /25 = 255.255.255.128 (128 total IPs, 126 usable hosts) /26 = 255.255.255.192 (64 total IPs, 62 usable hosts) /27 = 255.255.255.224 (32 total IPs, 30 usable hosts) /28 = 255.255.255.240 (16 total IPs, 14 usable hosts) /29 = 255.255.255.248 (8 total IPs, 6 usable hosts) /24 means mask 255
The "exit door" of a local network. If a device wants to talk to something outside its own subnet, it sends the data here. 2. How to Solve the Tables
Note: You don’t need to memorize CIDR calculations for most levels—just ensure IPs are within the network range defined by the mask. If your network is 192
Levels 7 to 10: Advanced Routing and Subnet Mask Calculations