Subnetting Questions 10
You are working with a network that has the network ID 172.16.0.0, and you require 25 subnets for your company and an additional 30 for the company that will merge with you within a month. Each network will contain approximately 600 nodes. What subnet mask should you assign?
| A. | 255.255.192.0 |
| B. | 255.255.224.0 |
| C. | 255.255.240.0 |
| E. | 255.255.252.0 |
Solution
Hence, the IP Address starts from 172, it indicates it is a Class B Address.
A/Q we need 25 + 30 = 55 Subnets with minimum 600 nodes.
We have to borrow 6 bits from the 3rd octet. (2n = 26 = 64 Subnets)
(11111111.11111111.11111100.00000000)
(27 + 26 + 25 + 24 + 23 + 22 + 21 + 20) . (27 + 26 + 25 + 24 + 23 + 22 + 21 + 20) . (27 + 26 + 25 + 24 + 23 + 22) . 0
Therefore, the subnet mask is 255.255.252.0
Here is the video tutorial of this Subnetting Question 10
Subnetting Questions 10 | You are working with a network that has the network ID 172.16.0.0
Class B Subnetting Tutorial
CLASS B SUBNETTING | How to find Subnet, Network Id, Broadcast id | Computer Networking Tips 2018
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