Exam N10-008 topic 1 question 566 discussion

Actual exam question from CompTIA's N10-008

Question #: 566
Topic #: 1

A network administrator is creating a subnet for a remote office that has 53 network devices. An additional requirement is to use the most efficient subnet. Which of the following CIDR notations indicates the appropriate number of IP addresses with the LEAST amount of unused addresses?

A. /24
B. /26
C. /28
D. /32

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Suggested Answer: B 🗳️

by Alizade at Sept. 9, 2023, 4:03 p.m.

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Alizade

Highly Voted 1 year, 5 months ago

Selected Answer: B

The answer is B. /26.

upvoted 7 times

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Sarmad_Mansour

Most Recent 11 months, 2 weeks ago

Selected Answer: B

Number of hosts = 2^(n)-2 N: number of available bits Option (A) N = 32-24 = 8 ---> 2^8 - 2 = 256 Option (B) N = 32-26 = 6 --> 2^6 - 2 = 62 Option (C) N = 32-28 =4 --> 2^4 - 2 = 14 Option (D) N = 32-32 = 0 --> 2^0 - 2 = -1 (Cannot use /32 at all) The correct answer is B

upvoted 4 times

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