Cisco 200-125 Exam

Refer to the exhibit. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?

  • A. 255.255.255.0
  • B. 255.255.254.0
  • C. 255.255.252.0
  • D. 255.255.248.0
Answer: Option B.
Explanation: 

310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.1111 1111.1111 1110.0000 0000 -> 255.255.254.0

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