How many subnetworks and hosts are available?
Table of Contents
How many subnetworks and hosts are available?
So 1024 subnets are available. Each subnet will have 6 bits for hosts. 2^6 = 64. We subtract 2 for the first and last address in the subnet, so 62 host addresses are available per subnet.
How many hosts does a network have?
The formula to determine how many hosts can operate on a network is 2n-2, where n is the number of 0 bits in the subnet mask. A subnet mask has 32 bits. If the CIDR notation is /27 it indicates that there are 5 bits left to create subnets.
How do you calculate hosts per subnet?
To calculate the number of possible hosts per subnet, use the formula 2h – 2, where h equals the number of host bits. The reason two addresses must be subtracted is because of the network address and the broadcast address.
What is the maximum number of hosts?
Maximum number of hosts is 2^10-2 = 1022. 2 is subtracted for Number of hosts is also. The address with all bits as 1 is reserved as broadcast address and address with all host id bits as 0 is used as network address of subnet.
How many hosts are in a 23 subnet?
Subnet Mask Cheat Sheet
| Addresses | Hosts | |
|---|---|---|
| / 25 | 128 | 126 |
| / 24 | 256 | 254 |
| / 23 | 512 | 510 |
| / 22 | 1024 | 1022 |
How many hosts can be accommodated in a 24 subnet?
For Class C Networks
| network | network mask | total hosts |
|---|---|---|
| /count | ||
| 24 | 255.255.255.0 | 254 |
| 25 | 255.255.255.128 | 252 |
| 26 | 255.255.255.192 | 248 |
How many hosts are in a 24 subnet?
Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References
| CIDR | Subnet mask | # of IP addresses |
|---|---|---|
| /23 | 255.255.254.0 | 512 |
| /22 | 255.255.252.0 | 1,024 |
| /21 | 255.255.248.0 | 2,048 |
| /20 | 255.255.240.0 | 4,096 |
How many hosts are in a 32 subnet?
Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References
| CIDR | Subnet mask | # of IP addresses |
|---|---|---|
| /32 | 255.255.255.255 | 1 |
| /31 | 255.255.255.254 | 2 |
| /30 | 255.255.255.252 | 4 |
| /29 | 255.255.255.248 | 8 |
How many hosts are in a 24?
Subnet Mask Cheat Sheet
| Addresses | Hosts | |
|---|---|---|
| / 26 | 64 | 62 |
| / 25 | 128 | 126 |
| / 24 | 256 | 254 |
| / 23 | 512 | 510 |
What is the subnetwork number of a host with an IP address of 172.16 66.0 21?
What is the subnetwork number of a host with an IP address of 172.16. 66.0/21? Explanation: A /21 is 255.255….Exercise :: Subnetting – Subnetting.
| A. | 172.16.112.0 |
|---|---|
| B. | 172.16.0.0 |
| C. | 172.16.96.0 |
| D. | 172.16.255.0 |
How do I find out how many host addresses I have?
The total number of IPv4 host addresses for a network is 2 to the power of the number of host bits, which is 32 minus the number of network bits. For our example of a /21 (network mask 255.255. 248.0 ) network, there are 11 host bits ( 32 address bits – 21 network bits = 11 host bits ).
How many hosts are in a 30 subnet?
How many hosts can be used for this subnet?
This means the complete Class A network is now divided (or subnetted) into four subnets, and each subnet can have 2 22 hosts (4194304). A host portion with all zeros is network number itself, and a host portion with all ones is reserved for broadcast on that subnet, leaving the effective number of hosts to 4194302 (2 22 – 2), as shown in the fourth column.
How to determine subnets?
The number of subnets is found by counting the number of bits by which the initial mask was extended , also known as the subnet bits. Our initial address allocation was 192.168.0.0 with a mask of 255.255.0.0. Using the host’s formula, we selected a subnet mask of 255.255.254.0. Let’s compare the two masks and count the subnet bits.
What are the classes of subnets?
Subnet a Class A network with ease. The valid subnets in this example are 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224. As another example, if you had a Class A subnet mask of 255.255.240.0, you’d use the mask on the second and third octets minus 256. The second octet would be 256-255=1, 2, 3, etc.,…
How many bits are borrowed for the subnet?
The first entry in the Class A table (/10 subnet mask) borrows two bits (the leftmost bits) from the host portion of the network for subnetting, then with two bits you have four (2 2) combinations, 00, 01, 10, and 11. Each of these will represent a subnet.