Networking - Subnetting - Discussion
Discussion Forum : Subnetting - Subnetting (Q.No. 9)
9.
What is the subnetwork number of a host with an IP address of 172.16.66.0/21?
Answer: Option
Explanation:
A /21 is 255.255.248.0, which means we have a block size of 8 in the third octet, so we just count by 8 until we reach 66. The subnet in this question is 64.0. The next subnet is 72.0, so the broadcast address of the 64 subnet is 71.255.
Discussion:
14 comments Page 2 of 2.
Mukesh Pandey said:
7 years ago
First Have a look On IP.
IP Address:172.16.66.0/24
11111111.11111111.11111000.00000000
Subnet Mask :255.255.248.0,
So Magic Number is 8.
IP Rage will Be;
172.16.0.0-172.16.7.255
172.16.8.0-172.16.15.255
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172.16.64.0-172.16.71.255
the subnetwork number of a host will be 172.16.64.0.
IP Address:172.16.66.0/24
11111111.11111111.11111000.00000000
Subnet Mask :255.255.248.0,
So Magic Number is 8.
IP Rage will Be;
172.16.0.0-172.16.7.255
172.16.8.0-172.16.15.255
.
.
.
.
.
.
172.16.64.0-172.16.71.255
the subnetwork number of a host will be 172.16.64.0.
(1)
Deepak Rawat said:
6 years ago
The subnet is 255.255.248.0.
Block size is 8.
Network id: 172.16.66.0
First IP and last IP: 172.16.66.1 to 172.16.73.254.
Brodocast id: 172.16.74.255.
Next 172.16.74.0.
Then how it is IP 172.16.64.0. Please tell me.
Block size is 8.
Network id: 172.16.66.0
First IP and last IP: 172.16.66.1 to 172.16.73.254.
Brodocast id: 172.16.74.255.
Next 172.16.74.0.
Then how it is IP 172.16.64.0. Please tell me.
(1)
Shubhanshoo said:
5 years ago
Consider A class C network with the subnet mask 255.255.255.41. How many network id (NID) and host id (HID) are there in the subnet mask? Please anyone explain.
(2)
Joshua said:
5 years ago
And why not 48, i.e option B.
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