Question:
Refer to the exhibit. Given the network address of 192.168.5.0 and a subnet mask of 255.255.255.224, how many total host addresses are unused in the assigned subnets?
- 56
- 60
- 64
- 68
- 72
Explanation: The network IP address 192.168.5.0 with a subnet mask of 255.255.255.224 provides 30 usable IP addresses for each subnet. Subnet A needs 30 host addresses. There are no addresses wasted. Subnet B uses 2 of the 30 available IP addresses, because it is a serial link. Consequently, it wastes 28 addresses. Likewise, subnet C wastes 28 addresses. Subnet D needs 14 addresses, so it wastes 16 addresses. The total wasted addresses are 0+28+28+16=72 addresses.
Exam with this question: CCNA 1 (v5.1 + v6.0) Chapter 8 Exam Answers
Exam with this question: CCNA 1 (v5.1 + v6.0) Chapter 9 Exam Answers
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