08-17-2017 09:00 AM - edited 03-08-2019 11:47 AM
If you take the network 192.168.1.0/24 and subnet it to four /26 networks, what is the usable address range in the third subnet?
kindly explain me the answer in brief.
AND
please explain me the underlined text in simple manner.
THANKS !
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08-17-2017 09:10 AM
The /24 is broken into blocks of 64 when split into /26s
Network addresses would be the 4 subnets below , so the useable addresses would be anything but the network address and the last address as its the broadcast
192.168.1.0 - 63 / 192.168.1.64 - 127 / 192.168.1.128 -191 /192.168.1.192 - 254
1- 63
65 -126
128 -191
193 - 254
08-17-2017 09:10 AM
The /24 is broken into blocks of 64 when split into /26s
Network addresses would be the 4 subnets below , so the useable addresses would be anything but the network address and the last address as its the broadcast
192.168.1.0 - 63 / 192.168.1.64 - 127 / 192.168.1.128 -191 /192.168.1.192 - 254
1- 63
65 -126
128 -191
193 - 254
08-12-2018 09:58 PM
what would be the subnet mask for each of these ranges?How would you calculate?Kindly help!
08-17-2017 09:31 AM
thanks for the answer ......
will you please explain me the highlighted text. i didn't get it.
08-17-2017 10:10 AM
so you have 0-255 in /24 but if you break to /26 it starts 0 -63 which is 64 altogether 0 being the subnet and 63 the broadcast address , that's the first network always start from 0 when subnetting Class C /24
so you ask whats the 3rd useable address space of the /26s
1st you need to know what the first is
/26 in binary is 8+8+8+2 , first 3 8s or octets are used then you have 2 bits left for in the last octect that are used , when you break that down in binary its bit 64 as below
192 168 1 0
11111111.11111111.11111111. 1 1 1 1 1 1 1 1
8 + 8 + 8 + the last 2 in octet 4 128 64 32 16 8 4 2 1 = /26 in total bits
So 2 bits in is the block you start with that's how you get the 64 , how many 64s in 256 = 4
so 4 networks of /26
you want to know the 3rd so its not 0-63 / its not 64-127 its the next 3rd block available so its 192.168.1.127 - 191 that's your 3rd networks useable addresses after you break it down
This is a good website for interactively practising subnetting
https://subnettingpractice.com/
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