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FJGEAR 4 Ports Printer Auto Sharing Switch USB 2.0 – Silver
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
Originally designed as a hands-on supplement to classroom instruction, Version 2.0 of this workbook typically contains: While modern networking is classless, Version 2
If a workbook problem asks you to subnet for 50 hosts, 20 hosts, and 2 hosts: Assign a for the 50 hosts (64 addresses). Assign a /27 for the 20 hosts (32 addresses). Assign a /30 for the 2 hosts (4 addresses). Troubleshooting Common Student Mistakes Assign a /30 for the 2 hosts (4 addresses)
: Increment block size = 4 in the third octet. Open the workbook to any random page, solve
Happy subnetting!
Open the workbook to any random page, solve five problems, then check your work using the methods above. If all five are correct, you’re ready for the exam. If not, review this guide again and keep practicing.
| | CIDR | Subnet Mask | Network ID | Hosts usable | |-------------|----------|----------------|----------------|------------------| | LAN A | /25 | 255.255.255.128 | 192.168.10.0 | 126 | | LAN B | /26 | 255.255.255.192 | 192.168.10.128 | 62 | | LAN C | /27 | 255.255.255.224 | 192.168.10.192 | 30 | | WAN link | /30 | 255.255.255.252 | 192.168.10.224 | 2 |