Last Updated on November 15, 2023 by InfraExam
A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network?
|Explanation & Hint:
To support 4 connected devices, you need a subnet that can provide at least 4 usable IP addresses for hosts. Remember that in any given subnet, two IP addresses are always used up – one for the network address and one for the broadcast address, so you need a subnet that provides at least 6 addresses in total.
Here’s how the subnet masks break down in terms of number of available hosts:
The smallest subnet mask that will support 4 connected devices (requiring 6 addresses in total) is 255.255.255.248 or a /29 subnet mask.