The CIDR block for the network is /22. While the broadcast address of the subnet for the host at 172.20.6.139 is given as:
- 50 subnets; 2^n=50, n=6
- Subnet Mask: 11111111.11111111.11111100.00000000 or 255.255.252.0
- Magic Number: 256-252=4
- Broadcast Address: 172.20.7.255
- (Class B network-affects 3rd set [172.20._.255], magic # (4) * subnet location (2nd) = 8 - 1 =7 (3rd set value).
What is a subnet?
A subnetwork, also known as a subnet, is a logical component of an IP network. Subnetting is the technique of separating a network into two or more networks.
Computers on the same subnet are addressed in their IP addresses with the same most-significant bit-group.
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