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Nokia 4A0-100 Exam - Question 41


Network 201.148.104.0/21 is subnetted using a /23 mask. How many subnets and host addresses per subnet will be obtained with this mask?

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Correct Answer: B

When subnetting the network 201.148.104.0/21 with a /23 mask, 2 additional bits are taken from the host portion to create subnets (since /21 to /23 is a difference of 2 bits). These 2 bits allow for 2^2 = 4 subnets. Each /23 subnet has 9 bits remaining for host addresses (32 - 23 = 9), meaning each subnet can have 2^9 - 2 = 510 usable host addresses (the -2 accounts for the network and broadcast addresses). Therefore, the correct answer is 4 subnets, 510 hosts per subnet.

Discussion

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VjBotOption: B
Aug 24, 2020

Ans should be B. 4 subnets & 510 hosts. From 21 to 23 --> 2 bits taken for nw addr. So 2^2 = 4 subnets masking /23 --> 9 bits host addr. So 2^9 - 2 = 510 hosts

cplstudyOption: B
Dec 24, 2020

B is the correct answer.

Moro71Option: B
May 16, 2021

B is correct, not A

huatah123Option: B
Aug 24, 2020

Answer should be B

NayaPOption: B
Sep 29, 2022

B is the right answer.