# Networking - Subnetting - Discussion

Discussion Forum : Subnetting - Subnetting (Q.No. 20)
20.
What is the subnetwork address for a host with the IP address 200.10.5.68/28?
200.10.5.56
200.10.5.32
200.10.5.64
200.10.5.0
Answer: Option
Explanation:
This is a pretty simple question. A /28 is 255.255.255.240, which means that our block size is 16 in the fourth octet. 0, 16, 32, 48, 64, 80, etc. The host is in the 64 subnet.
Discussion:
8 comments Page 1 of 1.

Anomie said:   2 months ago
Thanks for giving an explanation of the answer.

Ahad said:   1 year ago
How it's 64?

Anyone, please explain me clearly.

MJS UDAY said:   2 years ago
A senior admin at your network has subnetted the 178.14.0.0 network with a /21 mask and has naturally handed it over to you at this point. How many subnets does this leave you to work with?

Can anyone help me by explaining this?
(1)

Raja waqas said:   8 years ago
Perfectly understood thanks @Vaishali.

Teja said:   9 years ago
I have understood lot from your support about this concept.

Vaishali said:   9 years ago
/28 means 11111111.11111111.11111111.11110000.

Means there are 4 ON's i.e 1's 2^4 = 16 block size.

So address will be:

200.10.5.0.
200.10.5.16.
200.10.5.32.
200.10.5.48.
200.10.5.64--------200.10.5.79.
200.10.5.80.

Means 200.10.5.68 lies b/w 200.10.5.64.

So answer is (C).
(2)

Vikas said:   1 decade ago
What is the subnetwork address for a host with the IP address 200.10.5.68/28?

Raviranjan said:   1 decade ago
What is block size?

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