Anetwork 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?

answer6-9 screws;

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i found ur answer but it won't let me see it it's on "chegg" but you have to pay 14.99 month