Exam N10-008 topic 1 question 375 discussion

Actual exam question from CompTIA's N10-008

Question #: 375
Topic #: 1

The following DHCP scope was configured for a new VLAN dedicated to a large deployment of 325 IoT sensors:

The first 244 IoT sensors were able to connect to the TFTP server, download the configuration file, and register to an IoT management system. The other sensors are being shown as offline. Which of the following should be performed to determine the MOST likely cause of the partial deployment of the sensors?

A. Check the gateway connectivity to the TFTP server.
B. Check the DHCP network scope.
C. Check whether the NTP server is online.
D. Check the IoT devices for a hardware failure.

Show Suggested Answer

Suggested Answer: B 🗳️

by MollyTheCat at Jan. 18, 2023, 6:32 p.m.

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Paradox_Walnut

Highly Voted 10 months, 3 weeks ago

Selected Answer: B

Since the CIDR is /24, there are 256 available IPs. The first IP would be for the gateway, and the last IP for the broadcast address, leaving you with 254 available IPs. Since the exclusion range is from 10.10.0.1 - 10, remove 10 available IPs and you're left with 244. 244 IoT sensors were able to be assigned an IP, but the others weren't due to DHCP exhaust. Hence the answer being "B".

upvoted 12 times

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MollyTheCat

Most Recent 11 months ago

Is there a typo in the question? The question only makes sense if the exclusion range is 10.10.0.1 to 10.10.0.10. And than it would be answer B.

upvoted 3 times

Paradox_Walnut

10 months, 3 weeks ago

upvoted 3 times

[Removed]

9 months ago

MollyTheCat is correct though; the image shows an exclusion range from 10.10.10.1-10, not 10.10.0.1. This must be a typo.

upvoted 2 times

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