Question: You are designing a subnet mask for the 172.17.0.0 network. You want 70 subnets with up to 400 hosts on each subnet. What subnet mask should you use?


Questions are configured for internal IP address ranges only. Subnet zero is allowed as per Cisco standard practice. If you have learnt subnetting from organisations other than Cisco your answers may differ by up to two subnets per network (see explanation).

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