Subnetting question from my studying
kriscamaro68
Member Posts: 1,186 ■■■■■■■□□□
in CCNA & CCENT
Ok so I was going through subnettingquestions.com and came accross this one:
Question: How many subnets and hosts per subnet can you get from the network 172.20.0.0/27?
Answer: 2048 subnets and 30 hosts
Isnt the number of subnets 1024 not 2048?
When I broke it down in binary a /27's lowest network bit is 32 then you take that to the power of 2 32x32 and its 1024 am I wrong on this?
Question: How many subnets and hosts per subnet can you get from the network 172.20.0.0/27?
Answer: 2048 subnets and 30 hosts
Isnt the number of subnets 1024 not 2048?
When I broke it down in binary a /27's lowest network bit is 32 then you take that to the power of 2 32x32 and its 1024 am I wrong on this?
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dynamik
Banned Posts: 12,312 ■■■■■■■■■□
Since that's a Class B address, you have 16 bits to work with.
/27 means that the last five are used for the host, so you have 11 to work with. 2^11 = 2048.