IPv4 SUBNETTING ANSWERS
March 4th Subnetting Answers
Problem 1. 10.10.10.47
Problem 2. 192.168.50.0
Problem 3. 142.37.84.64
Problem 4. 147.96.16.1
March 3rd Subnetting Answers
Problem 1. What is the broadcast address for the network ID 172.19.118.32/28?
172.19.118.47
Problem 2. What is the network ID that the IP address 172.18.66.33/24 belongs to?
172.18.66.0
Problem 3. What is the broadcast address for the network ID 192.168.85.192/27?
192.168.85.255
Problem 4. What network ID does the IP address 172.26.104.111 with a subnet mask of 255.255.255.192 belong to?
172.26.104.64
Problem 5. What is the broadcast address for the network ID 192.168.133.16/28?
192.168.133.31
Problem 6. What is the broadcast address for the network ID 192.168.118.32/28?
192.168.118.47
Problem 7. What is the last usable IP address for the network ID 172.25.176.0/21?
172.25.183.254
Problem 8. What is the first usable IP address on the network that the host IP address 172.25.18.27/21 belongs to?
172.25.16.1
Problem 9. What is the broadcast address for network ID 172.29.218.128/25?
172.29.218.255
Problem 10. What network ID does the IP address 192.168.143.8 with a subnet mask of 255.255.255.192 belong to?
192.168.143.0
March 2nd, 2021 VLSM
(Variable Length Subnet Masking)
Production
53 Hosts /26 64
IPs 192.168.17.0
Accounting
31 Hosts /26
64 IPs 192.168.17.64
HR
12 Hosts
/28 16 IPs
192.168.17.128
IT
25
Hosts /27 32
IPs 192.168.17.144
Marketing
11 Hosts /28
16 IPs 192.168.17.176
Total IPs used = 192.
Leftover IPs = 64 which is a /26
March 2nd Subnetting Answers
Problem 1. What is the first usable IP address on the network that the host IP address 172.30.201.205/23 belongs to?
172.30.200.1
Problem 2. What is the first usable IP address on the network that the host IP address 172.26.27.185/21 belongs to?
172.26.24.1
Problem 3. What network ID does the IP address 172.19.50.133 with a subnet mask of 255.255.255.240 belong to?
172.19.50.128
Feb. 26th Subnetting Answers
Problem 1. What is the first usable IP address on the network that the host IP address 172.30.16.11 with a subnet mask of 255.255.254.0 belongs to?
172.30.16.1
Problem 2. How many subnets and usable IP addresses do you get with the network 192.168.94.0/26?
4 Subnets and 62 Usable IP addresses
Problem 3. What network ID does the IP address 172.18.206.53 with a subnet mask of 255.255.255.0 belong to?
172.18.206.0
Feb. 24th Subnetting Answers - Part 1
Problem 1. What is the first usable IP address on the network that the host IP address 172.28.132.48 with a subnet mask of 255.255.255.224 belongs to?
172.28.132.33
Problem 2. What is the usable IP range that the IP address 10.125.187.182 with a subnet mask of 255.255.240.0 a part of?
10.125.176.1 thru 10.125.191.254
Problem 3. What is the network ID that the IP address 192.168.70.23/28 belongs to, and what is that address considered?
192.168.70.16 & is the broadcast address for that subnet.
Feb. 24th Subnetting Answers - Part 2
Problem 1. What is the network ID that the IP address 192.168.204.26/30 belongs to?
192.168.204.24
Problem 2. What is the first usable IP address on the network that the host IP address 172.21.45.249 with a subnet mask of 255.255.254.0 belongs to?
172.21.44.1
Problem 3. How many subnets and usable IP addresses do you get with the network 192.168.241.0/29?
32 Suvnets and 6 usable IPs per subnet
Feb. 24th Subnetting Answers - Part 3
Problem 1. What is the broadcast address for the network ID 192.168.110.160/28?
192.168.110.175
Problem 2. What is the broadcast address for the network ID 10.169.32.0/20?
10.169.47.255
Problem 3. What is the usable IP range that the IP address 172.25.251.72/20 a part of?
172.24.240.1 thru 172.24.255.254
Feb. 23rd Subnetting Answers
Problem 1. What is the first usable IP address on the network that the host IP address 10.197.231.219 with a subnet mask of 255.255.240.0 belongs to?
10.197.224.1
Problem 2. How many subnets and usable IP addresses do you get with the network 192.168.130.0 with a subnet mask of 255.255.255.252?
64 Subnets and 2 Usable IPs per subnet
Problem 3. What network ID does the IP address 172.21.106.147 with a subnet mask of 255.255.255.128 belong to?
172.21.106.128
Feb. 22nd Subnetting Answers
Problem 1. What is the broadcast address for the network 192.168.21.128 with a subnet mask of 255.255.255.240?
192.168.21.143
Problem 2. What is the last usable IP address on the network 172.25.4.128 with a subnet mask of 255.255.255.192?
172.25.4.190
Problem 3. What is the last usable IP address on the network 172.29.186.0 with a subnet mask of 255.255.254.0?
172.29.187.254
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