The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?

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  • Post last modified:January 14, 2019
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Last Updated on January 14, 2019 by InfraExam

A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:
IP phones – 22 addresses
PCs – 20 addresses needed
Printers – 2 addresses needed
Scanners – 2 addresses needed

The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?

  • 255.255.255.0
  • 255.255.255.192
  • 255.255.255.224
  • 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 the number of hosts, which in this case is 22 hosts. Thus, 5 host bits are needed. The /27 or 255.255.255.224 subnet mask would be appropriate to use for these networks.

For All Questions: CCNA1 ITN Chapter 8 Exam Answers 2019

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