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Exam 200-125 topic 2 question 202 discussion

Actual exam question from Cisco's 200-125
Question #: 202
Topic #: 2
[All 200-125 Questions]

The network administrator needs to address seven LANs. RIP version 1 is the only routing protocol in use on the network and subnet 0 is not being used. What is the maximum number of usable IP addresses that can be supported on each LAN if the organization is using one class C address block?

  • A. 8
  • B. 6
  • C. 30
  • D. 32
  • E. 14
  • F. 16
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Suggested Answer: C 🗳️
by MrRobot316 at Oct. 16, 2019, 6:43 p.m.

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MrRobot316
5 years, 8 months ago
Since there is one class C network that means 256 total IP addresses. Since we need 7 LAN blocks and we cannot use the first one (subnet 0) we take 256/8=32 hosts. However, since we need to reserve the network and broadcast addresses for each of these subnets, only 30 total IP addresses are usable.
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