Subnetting Question

Q 1) Which subnet does host 172.23.4.77/24 belong to?

Q 2) Which subnet does host 192.168.61.86 255.255.255.248 belong to?

Q 3) What valid host range is the IP address 192.168.140.108 255.255.255.128 a part of?

Q 4) What is the broadcast address of the network 10.54.208.0 255.255.240.0?

Q 5) What is the last valid host on the subnetwork 10.184.240.0/20?

Q 6) How many subnets and hosts per subnet can you get from the network 172.17.0.0 255.255.255.240?

Q 7) You are designing a subnet mask for the 172.18.0.0 network. You want 1800 subnets with up to 22 hosts on each subnet. What subnet mask should you use?

Q 8) You are designing a subnet mask for the 172.21.0.0 network. You want 27 subnets with up to 1700 hosts on each subnet. What subnet mask should you use?

Q 9) You are designing a subnet mask for the 172.20.0.0 network. You want 10 subnets with up to 3800 hosts on each subnet. What subnet mask should you use?

Q 10) Which subnet does host 10.117.238.168 255.255.240.0 belong to?