Networking - Subnetting - Discussion

Discussion Forum : Subnetting - Subnetting (Q.No. 10)
10.
The network address of 172.16.0.0/19 provides how many subnets and hosts?
7 subnets, 30 hosts each
8 subnets, 8,190 hosts each
8 subnets, 2,046 hosts each
7 subnets, 2,046 hosts each
Answer: Option
Explanation:
A CIDR address of /19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.
Discussion:
20 comments Page 2 of 2.

Abhishek said:   6 years ago
How to calculate the number of host and number of the network for said IP-134.141.7.11 and subnet is 255.255.255.0

Ganapathi said:   7 years ago
2^3 = 8 subnet.

2^13 -2= 8190 hosts each only Host need public IP & broadcast IP. Subnet don't need -2.

Mehedi hasan said:   10 years ago
Answer is wrong, the correct answer will be 16128 and useable host: 16126 but the subnet is ok.

Kalimullah Ahmadzai said:   1 decade ago
@Vikas Beniwal and @Vasil are right. we don't need to subtract from the network portion.

Daniel said:   3 years ago
32 subnet and 8192 hosts. It's class b the values of third octet is 32.

Davil said:   10 years ago
Wrong answer. 2 power 5 is number of host per subnet.

Gaddo OroMan said:   2 years ago
I agree with you, Thanks @James willie.
(1)

Harshit said:   6 years ago
I can't understand it, Please explain.
(1)

Pragati said:   1 decade ago
How to calculate number of hosts?

Dede said:   8 years ago
I agree @Gajulapalli Naveen.


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