Subnetting Question & Answer

Question: How many subnets and hosts per subnet can you get from the network 172.24.0.0/26?

Answer: 1024 subnets and 62 hosts


Question: What is the last valid host on the subnetwork 172.31.115.128/25?

Answer: 172.31.115.254


Question: What is the broadcast address of the network 192.168.236.128 255.255.255.192?

Answer: 192.168.236.191


Question: What is the last valid host on the subnetwork 172.25.230.0 255.255.255.0?

Answer: 172.25.230.254


Question: How many subnets and hosts per subnet can you get from the network 172.21.0.0/23?

Answer: 128 subnets and 510 hosts


Question: What is the first valid host on the subnetwork that the node 192.168.75.244/26 belongs to?

Answer: 192.168.75.193



Question: What is the first valid host on the subnetwork that the node 192.168.138.197/25 belongs to?

Answer: 192.168.138.129


Question: What is the broadcast address of the network 172.18.92.0/22?

Answer: 172.18.95.255



Question: How many subnets and hosts per subnet can you get from the network 172.21.0.0 255.255.255.224?

Answer: 2048 subnets and 30 hosts



Question: What is the last valid host on the subnetwork 172.18.192.0 255.255.254.0?

Answer: 172.18.193.254




Question: What is the last valid host on the subnetwork 172.25.102.32 255.255.255.240?

Answer: 172.25.102.46



Question: How many subnets and hosts per subnet can you get from the network 172.28.0.0/26?

Answer: 1024 subnets and 62 hosts



Question: Which subnet does host 192.168.213.26/29 belong to?

Answer: 192.168.213.24



Question: How many subnets and hosts per subnet can you get from the network 192.168.108.0/29?

Answer: 32 subnets and 6 hosts



Question: What is the last valid host on the subnetwork 172.20.62.0 255.255.254.0?

Answer: 172.20.63.254



Question: What is the broadcast address of the network 172.26.70.0 255.255.254.0?

Answer: 172.26.71.255



Question: What is the broadcast address of the network 172.29.233.192/27?

Answer: 172.29.233.223



Question: What is the broadcast address of the network 192.168.14.208/29?

Answer: 192.168.14.215



Question: What is the last valid host on the subnetwork 172.19.156.0/23?

Answer: 172.19.157.254



Question: Which subnet does host 192.168.203.101 255.255.255.192 belong to?

Answer: 192.168.203.64



Question: What is the last valid host on the subnetwork 172.17.55.0/24?

Answer: 172.17.55.254



Question: What is the first valid host on the subnetwork that the node 172.25.23.245 255.255.248.0 belongs to?

Answer: 172.25.16.1



Question: What is the first valid host on the subnetwork that the node 172.21.25.155/23 belongs to?

Answer: 172.21.24.1



Question: What is the first valid host on the subnetwork that the node 172.30.241.137 255.255.248.0 belongs to?

Answer: 172.30.240.1



Question: What is the broadcast address of the network 172.24.128.0 255.255.254.0?

Answer: 172.24.129.255



Question: What is the last valid host on the subnetwork 172.28.96.0/21?

Answer: 172.28.103.254



Question: What is the first valid host on the subnetwork that the node 172.22.183.241/20 belongs to?

Answer: 172.22.176.1



Question: What valid host range is the IP address 172.26.2.56/23 a part of?

Answer: 172.26.2.1 through to 172.26.3.254



Question: What is the first valid host on the subnetwork that the node 10.53.186.229 255.255.240.0 belongs to?

Answer: 10.53.176.1



Question: You are designing a subnet mask for the 172.19.0.0 network. You want 2300 subnets with up to 10 hosts on each subnet. What subnet mask should you use?

Answer: 255.255.255.240



Question: What is the first valid host on the subnetwork that the node 192.168.20.54/27 belongs to?

Answer: 192.168.20.33



Question: What is the last valid host on the subnetwork 172.27.125.64 255.255.255.192?

Answer: 172.27.125.126



Question: What is the first valid host on the subnetwork that the node 172.18.43.94/25 belongs to?

Answer: 172.18.43.1



Question: What is the last valid host on the subnetwork 172.29.240.0/21?

Answer: 172.29.247.254



Question: What is the first valid host on the subnetwork that the node 192.168.162.79/26 belongs to?

Answer: 192.168.162.65



Question: Which subnet does host 192.168.150.152 255.255.255.240 belong to?

Answer: 192.168.150.144



Question: What is the first valid host on the subnetwork that the node 172.20.241.128 255.255.254.0 belongs to?

Answer: 172.20.240.1



Question: How many subnets and hosts per subnet can you get from the network 172.22.0.0/23?

Answer: 128 subnets and 510 hosts



Question: Which subnet does host 172.17.156.106/25 belong to?

Answer: 172.17.156.0


Question: What is the first valid host on the subnetwork that the node 172.23.127.131 255.255.252.0 belongs to?

Answer: 172.23.124.1


Question: How many subnets and hosts per subnet can you get from the network 192.168.41.0 255.255.255.252?

Answer: 64 subnets and 2 hosts



Question: Which subnet does host 192.168.93.154/28 belong to?

Answer: 192.168.93.144



Question: What is the first valid host on the subnetwork that the node 172.28.68.6/21 belongs to?

Answer: 172.28.64.1



Question: Which subnet does host 172.25.52.189 255.255.254.0 belong to?

Answer: 172.25.52.0



Question: What is the broadcast address of the network 172.18.62.0/23?

Answer: 172.18.63.255



Question: How many subnets and hosts per subnet can you get from the network 10.0.0.0/20?

Answer: 4096 subnets and 4094 hosts



Question: What is the broadcast address of the network 192.168.89.192/27?

Answer: 192.168.89.223



Question: What is the broadcast address of the network 172.22.32.240/28?

Answer: 172.22.32.255



Question: What is the broadcast address of the network 192.168.185.128 255.255.255.192?

Answer: 192.168.185.191



Question: Which subnet does host 10.57.106.0/20 belong to?

Answer: 10.57.96.0




Question: What is the first valid host on the subnetwork that the node 172.17.115.246/23 belongs to?

Answer: 172.17.114.1



Question: Which subnet does host 10.192.114.229 255.255.240.0 belong to?

Answer: 10.192.112.0



Question: You are designing a subnet mask for the 172.26.0.0 network. You want 110 subnets with up to 400 hosts on each subnet. What subnet mask should you use?

Answer: 255.255.254.0



Question: What is the first valid host on the subnetwork that the node 172.21.254.67 255.255.255.192 belongs to?

Answer: 172.21.254.65




Question: How many subnets and hosts per subnet can you get from the network 192.168.91.0 255.255.255.224?

Answer: 8 subnets and 30 hosts



Question: What is the first valid host on the subnetwork that the node 172.22.0.139 255.255.255.128 belongs to?

Answer: 172.22.0.129



Question: What valid host range is the IP address 192.168.114.213/30 a part of?

Answer: 192.168.114.213 through to 192.168.114.214



Question: What valid host range is the IP address 172.22.95.201/23 a part of?

Answer: 172.22.94.1 through to 172.22.95.254



Question: What valid host range is the IP address 172.17.206.183 255.255.255.192 a part of?

Answer: 172.17.206.129 through to 172.17.206.190



Question: How many subnets and hosts per subnet can you get from the network 172.26.0.0 255.255.252.0?

Answer: 64 subnets and 1022 hosts



Question: What valid host range is the IP address 172.20.123.12 255.255.255.240 a part of?

Answer: 172.20.123.1 through to 172.20.123.14



Question: What is the first valid host on the subnetwork that the node 172.17.55.229 255.255.254.0 belongs to?

Answer: 172.17.54.1



Question: What is the broadcast address of the network 172.16.52.0/23?

Answer: 172.16.53.255



Question: What is the last valid host on the subnetwork 10.212.80.0/20?

Answer: 10.212.95.254




Question: What valid host range is the IP address 192.168.199.107/28 a part of?

Answer: 192.168.199.97 through to 192.168.199.110



Question: How many subnets and hosts per subnet can you get from the network 192.168.55.0/29?

Answer: 32 subnets and 6 hosts



Question: Which subnet does host 10.193.47.84 255.255.240.0 belong to?

Answer: 10.193.32.0