Last Updated on January 11, 2019 by InfraExam
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?
Explanation:In order to accommodate 40 devices, 6 host bits are needed. With 6 bits, 64 addresses are possible, but one address is for the subnet number and one address is for a broadcast. This leaves 62 addresses that can be assigned to network devices. The mask associated with leaving 6 host bits for addressing is 255.255.255.192.