HOTSPOT
You create a virtual network named fabVNet01.
You design the virtual network to include two subnets, one named DNS-subnet and one
named Apps-subnet, as shown in the exhibit. (Click the Exhibits button.)
In the table below, identify the number of IP addresses that will be available for virtual
machines (VMs) or cloud services in each subnet. Make only one selection in each column.
Answer: 
First 4 IP addresses are reserved for Azure, so the correct answer should be DNS-subnet:27, Apps-subnet:3
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Why not 32 and 8 ? if we remove the network and brodcast we have 30 and 6.
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Apps-subnet 32-39 = 7 (AZure reserve first 4 IPs) = 3 available IPs
DNS-subnet 0-31 = 31 (AZure reserve first 4 IPs) = 27 available
but I must still go write my exam 🙁
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Just simply -5
Azure reserves some IP addresses within each subnet. The first and last IP addresses of each subnet are reserved for protocol conformance, along with the x.x.x.1-x.x.x.3 addresses of each subnet, which are used for Azure services.
https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq
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