Subnetting Question 9
You are working with a network that is 172.16.0.0 and would like to have the maximum number of hosts per subnet. This assumes support for eight subnets. What subnet mask should you use?
| A. | 255.255.192.0 |
| B. | 255.255.224.0 |
| C. | 255.255.240.0 |
| D. | 255.255.248.0 |
Solutions
Hence, the IP Address starts from 172, it indicates it is a Class B address. By default in class B Address, 16 bits are reserved for the network and 16 bits are reserved for the host.
A/Q we need eight subnets. It means we have to borrow 3 bits from the third octet. (2n = 23 = 8 Subnets)
(11111111.11111111.11100000.00000000)
(27 + 26 + 25 + 24 + 23 + 22 + 21 + 20) . (27 + 26 + 25 + 24 + 23 + 22 + 21 + 20) . (27 + 26 + 25).0
Therefore, the subnet mask is 255.255.224.0
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Subnetting Questions 9 | You are working with a network that is 172.16.0.0 & need 8 Subnets ...?
