Refer to the exhibit. Considering the addresses already used and having to remain within the 10.16.10.0/24 network range, which subnet address could be assigned to the network containing 25 hosts?

CCNA1 v7 - ITNv7 - Modules 11 - 13 IP Addressing Exam Answers 04
CCNA1 v7 – ITNv7 – Modules 11 – 13 IP Addressing Exam Answers 04
  • 10.16.10.160/26
  • 10.16.10.128/28
  • 10.16.10.64/27
  • 10.16.10.224/26
  • 10.16.10.240/27
  • 10.16.10.240/28
Answers Explanation & Hints:

Addresses 10.16.10.0 through 10.16.10.63 are taken for the leftmost network. Addresses 10.16.10.192 through 10.16.10.207 are used by the center network.The address space from 208-255 assumes a /28 mask, which does not allow enough host bits to accommodate 25 host addresses.The address ranges that are available include 10.16.10.64/26 and10.16.10.128/26. To accommodate 25 hosts, 5 host bits are needed, so a /27 mask is necessary. Four possible /27 subnets could be created from the available addresses between 10.16.10.64 and 10.16.10.191:
10.16.10.64/27
10.16.10.96/27
10.16.10.128/27
10.16.10.160/27

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