IPv4 Subnetting Reference Chart - Cisco Learning Network
This chart organizes Class A, B, and C networks and various subnets. The chart displays slash (/) notation (a compact representation of the associated routing prefix), netmask (32-bit mask used to divide an IP address into subnets and specify the network's available hosts), block size (the entire IP space that a network takes up), and the ...
class b subnetting /23 and /25 examples - Cisco Learning Network
The numbers between the subnet numbers and the broadcast address. with a /25, you have 128 addresses per subnet, but .0 can't be used for a host, and neither can say .127. So the first subnet for 172.16.0.0 is: 172.16.0.0 - 172.16.0.127. But .0 can't be used because it's the "subnet number" and .127 can't be used because it's the broadcast.
Subnetting question. Do you know the answer? - Cisco Learning …
Q:A Class B network needs to be subnetted such that it supports 100 subnets and 100 hosts/subnet. Which of the following answers list a workable combination for the number of network, subnet, and host bits? (Choose two answers.) A. Network = 16, subnet = 9, host = 7. B. Network = 16, subnet = 7, host = 7. C. Network = 16, subnet = 8, host = 8
Class B Subnetting\Zero Subnet Question - Cisco Learning Network
Well, lets subnet our class B network : 1) 172.18.0.0/16 . network number - 172.18.0.0 ( all host bits zeroed) network mask - 255.255.0.0 ( last two octets for host address, exceptions are all zeros and all ones) broadcast nummber - 172.18.255.255 ( all host bits with ones) 2) Will take 3rd octet as subnetwork number
CLASS A, B, C - Cisco Learning Network
For the purposes of private IP addressing, all 256 class C networks have been allocated in RFC1918. The entire range can be summarized using a supernet address of 192.168.0.0/16. Also, Class B addresses of 172.16.0.0 to 172.31.255.255 have been allocated for the same purposes, so they can be summarized as 172.16.0.0/12.
class b address with class c subnet mask - concept qn part 2
Your original network is a class B, so it has 16 bits in its default subnet mask, you borrowed 13 bits from the host part (nnnnnnnn.nnnnnnnn.ssssssss.ssssshhh) of the original network, now if you do 2^13 you will get the total number of subnets …
VLSM with Class B Subnet Mask - Cisco Learning Network
The last octett of the subnet mask is 256-8=248. This kind of calculation is much quicker than adding up the powers of 2 for the "networkbits" in the netmask (in this case, it would be for the last octett 128+64+32+16+8=248, but with 256-8=248 i get the result much quicker, because it is not a sum of up to 6 powers of 2, but only the difference ...
subnet mask - Cisco Learning Network
In a brief explanantion, using classful subnet masks you have: Class A - 1-127 using a subnet mask of 255.0.0.0 or /8 . where you have N.H.H.H (N = network , H = hosts). where /8 = 11111111.00000000.00000000.00000000 - /8 simple represent the number of network bits. Class B - 128-192 using a subnet mask of 255.255.0.0 or /16
ccent subnetting question - Cisco Learning Network
A class B network has a subnet mask of 255.255.0.0, in dotted decimal notation, or /16, in slash notation. The question is asking you to identify the subnet masks that would provide 100 subnets. So we need to use at least 7 more bits to obtain the 100 subnets required because 2^7 = 128.
Class B or VLAN - Cisco Learning Network
If I have a class C network in action and VoIP phones also using the same subnet class C scope would it be possible just to convert the network to a class B or would the preferred method be to vlan them up? Say my user network on 172.0.0.0/16 and phones on 172.0.1.0/16, they should still be able to talk to each other right?