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Exam N10-008 topic 1 question 818 discussion

Actual exam question from CompTIA's N10-008
Question #: 818
Topic #: 1
[All N10-008 Questions]

A network administrator is trying to create a subnet, which is the most efficient size possible, for 31 laptops. Which of the following network subnets would be best in this situation?

  • A. 10.10.10.0/24
  • B. 10.10.10.0/25
  • C. 10.10.10.0/26
  • D. 10.10.10.0/27
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Suggested Answer: C 🗳️

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Roman_Kwo
Highly Voted 1 year, 3 months ago
Selected Answer: C
Should be 10.10.10.0/26 (64IPs - 2 = 62 usable) 10.10.10.0/27 is 32 IPs - 2 = 30 usable. We need to fit 31 IPs therefore it should be /26. Correct me if I am wrong.
upvoted 9 times
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Marinos_89
Most Recent 10 months, 1 week ago
Selected Answer: B
32bit - /26= 7 2^7= 64 64-2=62 ips
upvoted 1 times
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BigDazza_111
1 year, 1 month ago
Selected Answer: C
C is correct, easy
upvoted 4 times
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aed0e20
1 year, 2 months ago
C is the answer
upvoted 4 times
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jagoichi
1 year, 2 months ago
Selected Answer: C
/26 gives us 64 minus 2 for BR and Net ID 62 /27 is to few 32 minus 2 = 30
upvoted 4 times
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kinny4000
1 year, 3 months ago
We need 31 hosts. /27 = 32 hosts BUT 2 are reserved for network and broadcast addresses (30 hosts) . /26 is the right answer (62 hosts)
upvoted 4 times
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