### How do you find the number of subnets and hosts?

## How do you find the number of subnets and hosts?

To calculate the number of possible subnets, use the formula 2n, where n equals the number of host bits borrowed. For example, if three host bits are borrowed, then n=3. 23 = 8, so eight subnets are possible if three host bits are borrowed.

## What is the subnet for the host IP address?

A 30-bit subnet mask allows for four IPv4 addresses: two host addresses, one all-zeros network, and one all-ones broadcast address. A point-to-point link can only have two host addresses. There is no real need to have the broadcast and all-zeros addresses with point-to-point links.

**How many hosts are in a subnet?**

Class A

Network Bits | Subnet Mask | Number of Hosts |
---|---|---|

/24 | 255.255.255.0 | 254 |

/25 | 255.255.255.128 | 126 |

/26 | 255.255.255.192 | 62 |

/27 | 255.255.255.224 | 30 |

### What is the subnet for host ID 172.16 3.65 23?

What is the subnet for host ID 172.16. 3.65/23? A /23 is 255.255. 254.0.

### How do you calculate 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.

**How many hosts are in a class C 29 mask?**

For Class C Networks

network | network mask | total hosts |
---|---|---|

/count | ||

28 | 255.255.255.240 | 224 |

29 | 255.255.255.248 | 192 |

30 | 255.255.255.252 | 128 |

#### How many IP addresses are there in a Class C network?

2,097,152 possible

A Class C address consists of a 24-bit network address and an 8-bit local host address. The first three bits in the network address indicate the network class, leaving 21 bits for the actual network address. Therefore, there are 2,097,152 possible network addresses and 256 possible local host addresses.

#### How many IP addresses on a subnet?

Each subnet contains all IP addresses with its valid prefix, but can vary in the remaining 9 binary digits, so there are 2^9 = 512 IP addresses available to hosts in each subnet. You can find numerous netmask calculator tools online to do these calculations for you and to map IP addresses and subnet masks to subnets.

**How do you create a subnet?**

Steps Click the Network tab. In the Subnets tab, click Create. In the Create Subnet dialog box, specify subnet details, such as the name, subnet IP address or subnet mask, range of IP addresses, gateway address, and broadcast domain. You can specify the IP addresses as a range, as comma-separated multiple addresses, or as a mix of both.

## What does an IP subnet calculator do?

The IP Subnet Calculator performs subnet calculations for the given network address block, subnet mask, maximum required hosts per subnet and determines the resulting broadcast address, subnet, Cisco wildcard mask and host range.

## How do you calculate subnet mask?

A more mathematical way to express the the subnet mask calculation is: current value = value on the left (previous value) + power of 2 of this column. It should take about 1 minute to do this when the exam starts. It will be extremely useful all through the exam to double check any IP and subnet.

How do you find the number of subnets and hosts? To calculate the number of possible subnets, use the formula 2n, where n equals the number of host bits borrowed. For example, if three host bits are borrowed, then n=3. 23 = 8, so eight subnets are possible if three host bits are borrowed. What…