What single subnet mask would be appropriate to use for the three subnetworks?

Questions BankCategory: CCNAWhat single subnet mask would be appropriate to use for the three subnetworks?
ITExamAnswers Staff asked 6 months ago
Question:
A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices:

Subnetwork A: IP phones – 10 addresses
Subnetwork B: PCs – 8 addresses
Subnetwork C: Printers – 2 addresses

What single subnet mask would be appropriate to use for the three subnetworks?

  • 255.255.255.0
  • 255.255.255.240
  • 255.255.255.248
  • 255.255.255.252

Explanation: If the same mask is to be used, then the network with the most hosts must be examined for number of hosts. Because this is 10 hosts, 4 host bits are needed. The /28 or 255.255.255.240 subnet mask would be appropriate to use for these networks. ​

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