That is where the search for begins. In this article, we will break down exactly what this workbook covers, how to verify your answers, common pitfalls, and—most importantly—how to think like a subnetter so you never need to blindly copy answers again.
While modern networking is classless, Version 2.0 still tests your ability to identify default masks: 1–126 (Default Mask: 255.0.0.0 / /8) Class B: 128–191 (Default Mask: 255.255.0.0 / /16) Class C: 192–223 (Default Mask: 255.255.255.0 / /24) Note: 127.x.x.x is reserved for loopback testing. Section 3: Subnetting Scenarios & Answer Key That is where the search for begins
: Create 4 subnets with at least 25 hosts each. Section 3: Subnetting Scenarios & Answer Key :
| | Mask | Network ID | Broadcast | First host | Last host | |---------------------|-------------------|----------------|-----------------|----------------|----------------| | 10.20.30.40 | 255.255.255.240 | 10.20.30.32 | 10.20.30.47 | 10.20.30.33 | 10.20.30.46 | | 172.25.150.200 | 255.255.254.0 | 172.25.150.0 | 172.25.151.255 | 172.25.150.1 | 172.25.151.254 | | 192.168.99.199 | 255.255.255.192 | 192.168.99.192 | 192.168.99.255 | 192.168.99.193 | 192.168.99.254 | how to verify your answers