# What is the subnet for CIDR 24?

## What is the subnet for CIDR 24?

255.255.255.0
Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

CIDR Subnet mask # of IP addresses
/24 255.255.255.0 256
/23 255.255.254.0 512
/22 255.255.252.0 1,024
/21 255.255.248.0 2,048

What is the mask 255.255 255.0 in CIDR notation?

A class C network would have a subnet mask of 255.255. 255.0 which means that 24 bits are used for the network. In CIDR notation this is designated by a /24 following the IP address.

### What is the CIDR value for the subnet mask?

The CIDR number is typically preceded by a slash “/” and follows the IP address. For example, an IP address of 131.10. 55.70 with a subnet mask of 255.0. 0.0 (which has 8 network bits) would be represented as 131.10.

How is CIDR subnet mask calculated?

The process to determine the subnet mask for a CIDR address is straight forward. The number of bits in the network portion of the address are converted to 1s and right padded with 0s until there are 32 numbers. The sequence of numbers is then divided into 4 octets.

#### How do you make a subnet mask?

A Subnet mask is a 32-bit number that masks an IP address, and divides the IP address into network address and host address. Subnet Mask is made by setting network bits to all “1”s and setting host bits to all “0”s. Within a given network, two host addresses are reserved for special purpose, and cannot be assigned to hosts.

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.

## What is CIDR address?

CIDR is the short for Classless Inter-Domain Routing, an IP addressing scheme that replaces the older system based on classes A, B, and C. A single IP address can be used to designate many unique IP addresses with CIDR. A CIDR IP address looks like a normal IP address except that it ends with a slash followed by a number,…

What is CIDR notation?

CIDR notation. CIDR notation is a compact representation of an IP address and its associated routing prefix. The notation is constructed from an IP address, a slash (‘/’) character, and a decimal number.