10.4.77.188 /19 1. Use given CIDR/Mask to find column on Cheat Sheet a. CIDR/Subnet Mask map to each other b. Locate Group Size c. Start at 0 in relevant octet d. Increase by Group Size until you PASS target IP 2. Number BEFORE Target IP is Network ID 3. Number AFTER Target IP is the Next Network 4. The IP Address BEFORE Next Network is Broadcast 5. IP Address AFTER Network ID is First Host 6. IP Address BEFORE Broadcast IP is Last Host 7. 2 (32-CIDR) is total # of IP Addresses a. Dont Forget to subtract 2 if needed. Network ID: _______________________________ Broadcast IP: _____________________ First Host IP: _____________________ Last Host IP: _____________________ Next Network: ___________________ # IP Addresses: ___________________ # Usable IP Address: ______________ CIDR/Subnet: _____________________ # IP Addresses 32 19 = 13

10.4.335.99 /21 Hint: Use Speed Tip 1. Use given CIDR/Mask to find column on Cheat Sheet a. CIDR/Subnet Mask map to each other b. Locate Group Size c. Start at 0 in relevant octet d. Increase by Group Size until you PASS target IP 2. Number BEFORE Target IP is Network ID 3. Number AFTER Target IP is the Next Network 4. The IP Address BEFORE Next Network is Broadcast 5. IP Address AFTER Network ID is First Host 6. IP Address BEFORE Broadcast IP is Last Host 7. 2 (32-CIDR) is total # of IP Addresses a. Dont Forget to subtract 2 if needed. Network ID: _______________________________ Broadcast IP: _____________________ First Host IP: _____________________ Last Host IP: _____________________ Next Network: ___________________ # IP Addresses: ___________________ # Usable IP Address: ______________ CIDR/Subnet: _____________________ 32 21 = 11

10.4.211.66 /18

1. Use given CIDR/Mask to find column on Cheat Sheet a. CIDR/Subnet Mask map to each other b. Locate Group Size c. Start at 0 in relevant octet d. Increase by Group Size until you PASS target IP 2. Number BEFORE Target IP is Network ID 3. Number AFTER Target IP is the Next Network 4. The IP Address BEFORE Next Network is Broadcast 5. IP Address AFTER Network ID is First Host 6. IP Address BEFORE Broadcast IP is Last Host 7. 2 (32-CIDR) is total # of IP Addresses a. Dont Forget to subtract 2 if needed. Network ID: _______________________________ Broadcast IP: _____________________ First Host IP: _____________________ Last Host IP: _____________________ Next Network: ___________________ # IP Addresses: ___________________ # Usable IP Address: ______________ CIDR/Subnet: _____________________