If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20, what is the maximum number of hosts allowed on this subnet?
A.
4094
B.
1024
C.
8190
D.
2046
E.
4096
what is the maximum number of hosts allowed on this subnet?
If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20, what is the maximum number of hosts allowed on this subnet?
Please can you explain how you got 4094. Because when i work it out i get
11111111.11111111.00010100.00000000
So host = 2^13 – 2 ?
Ok ok i got it. Its class B. Sorry my bad.
Easiest way to work it out: So you have 32 bits and you are masking the first 20 bits for networks leaving 12 bits for hosts address per network. (32-20=12). Total number of valid host is : (2^12=4096)- 2= 4094 (first reserved to represent each the network and last the broadcast address for that network)
LoL i got this question in my CCNA exam today 😀
And I already knew the answer :DD
shere your explain if you can?
In the prefix /20 we have 12 bit 0s so the number of hosts-per-subnet is 212 – 2 = 4094.
In the prefix /20 we have 12 bit 0s so the number of hosts-per-subnet is 2^12 – 2 = 4094.