## What is the netmask for 28?

255.255.255.240

Subnet Mask Cheat Sheet

Addresses | Netmask | |
---|---|---|

/30 | 4 | 255.255.255.252 |

/29 | 8 | 255.255.255.248 |

/28 | 16 | 255.255.255.240 |

/27 | 32 | 255.255.255.224 |

**How many IP’s is a 28?**

Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

CIDR | Subnet mask | # of usable IP addresses |
---|---|---|

/30 | 255.255.255.252 | 2 |

/29 | 255.255.255.248 | 6 |

/28 | 255.255.255.240 | 14 |

/27 | 255.255.255.224 | 30 |

**How many bits are in a subnet mask?**

32-bit

A subnet mask is a 32-bit number created by setting host bits to all 0s and setting network bits to all 1s. In this way, the subnet mask separates the IP address into the network and host addresses. The “255” address is always assigned to a broadcast address, and the “0” address is always assigned to a network address.

### How is subnet mask bit calculated?

Calculate the subnet bits by looking at the final 8-bit binary word of the 32-bit binary subnet mask. If the final 8-bit binary word is 10000000, then there is one subnet bit and therefore 25 mask bits. If it is 11000000, then there are two subnet bits and therefore 26 mask bits.

**What does 28 mean in IP address?**

Answer: 28 is a subnet mask. IP address has 32 bits in total. 28 denotes network ID while rest of the bits (which are 4 bits) are used for hosts.

**How is wildcard mask calculated?**

To calculate the wildcard mask, subtract the subnet mask (that is, 255.255. 255.0) from 255.255. 255.255, as shown in Table 4-6. The solution produces the wildcard mask 0.0.

#### What does IP 28 mean?

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**What is the subnet mask 255.255 255.0 in binary?**

11111111.11111111

Convert the subnet mask to binary. In this example, the binary representation of 255.255. 255.0 is: 11111111.11111111.

## What would subnet mask be of the following network range 192.168 1.0 28?

IP Subnet Calculator

CIDR block | IP range (network – broadcast) | Subnet Mask |
---|---|---|

192.168.1.0/28 | 192.168.1.0 – 192.168.1.15 | 255.255.255.240 |

192.168.1.0/27 | 192.168.1.0 – 192.168.1.31 | 255.255.255.224 |

192.168.1.0/26 | 192.168.1.0 – 192.168.1.63 | 255.255.255.192 |

192.168.1.0/25 | 192.168.1.0 – 192.168.1.127 | 255.255.255.128 |

**How many IPS is a 26?**

64 IPv4 addresses

A “/26” network provides 64 IPv4 addresses.

**What is the size of a netmask?**

Netmasks Size Netmask / 1 255.255.255.255 /32 2 255.255.255.254 /31 4 255.255.255.252 /30 8 255.255.255.248 /29

### What is the netmask of a subnet with x value?

‘x’ in netmask ‘255.255.255.x’ is 256 – number of IP addresses in the subnet. In slash-notation, the netmask is ‘/y’, where y = 32 – n, and 2ⁿ is the number of addresses in the subnet. And ‘x’ in netmask ‘255.255.255.x’ is: 256 – 4 = 252. So the netmask is: ‘255.255.255.252’.

**What is the slash-notation for netmask?**

And ‘x’ in netmask ‘255.255.255.x’ is: 256 – 4 = 252. So the netmask is: ‘255.255.255.252’. 4 = 2², so n = 2 and y is 32 – 2 = 30. The slash-notation netmask is therefore: ‘/30’. Note: You can’t actually use IP addresses a.b.c.0 or a.b.c.255 Any address. Note: This is a rather small subnet. Starts with even address.

**How do you find the CIDR of a subnet mask?**

To figure out the CIDR notation for a given subnet mask, all you need to do is convert the subnet mask into binary, then count the number of ones or “on” digits. For example: Because there’s three octets of ones, there are 24 “on” bits meaning that the CIDR notation is /24.