How do you calculate the number of host bits borrowed?

How many bits can be borrowed from the host portion?

In this example: 192.10. 10.0 , we need to calculate 14 Networks, means we should have at least 4 Bits (All Ones) borrowed from the Host which means (N = 4) to provide the total Number of Networks. So , 2 = 16 ( 4 is the least number of bits can be borrowed to accomdate 14 Networks .

What is the formula to calculate number of hosts?

The formula for determining the number of hosts a network supports is 2n-2, where n is the number of bits used for the host. 2n-2 is sometimes expressed as (2^n) – 2. Both indicate 2 raised to the power of n. You subtract two to reserve one IP for the network ID and one for the broadcast address.

How do you borrow host bits?

For every host-bit we borrow we can double the number of subnets we can create, so by borrowing 2 host bits we can create 4 subnets. Every host bit you “borrow” doubles the amount of subnets you can create. Calculate it from binary to decimal: 128+64 = 192. The new subnet mask will be 255.255.

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How many host bits are borrowed If four subnets are created?

It takes 2 bits to provide four possible subnets; therefore, 2 bits are borrowed from the host bits. 3. This means the process of creating the 4 subnets reduces the number of bits available for host IP addresses.

What is the equivalent 32 bit address of 30?

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 host addresses are available on the 192?

How many host addresses are available on the 192.168. 10.128/26 network? Answers Explanation & Hints: A /26 prefix gives 6 host bits, which provides a total of 64 addresses, because 2 6 = 64.

How many hosts are in a 25 subnet?

Subnet Mask Cheat Sheet

Addresses Hosts
/ 25 128 126
/ 24 256 254
/ 23 512 510
/ 22 1024 1022

What is host bit?

Host bits are the portion of an IP address that identify a specific host in a subnet. The subnet mask determines how much of the address is used for network bits and host bits. For example, an IP (v4) address of 192.168. 0.64/26 has a 6-bit host portion, because 26 out of 32 bits are reserved for the network portion.

How do you calculate the number of networks in a class?

The total number of networks a class address may have is calculated by subtracting the number of bits in the subnet mask from the number of bits used to determine which class of network it is. For example, a class A network has an 8-bit subnet mask. Only 1 bit is used to determine that it is a class A network.

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What is the maximum number of hosts per subnet?

The maximum number of available hosts is 4094. You cannot, of course, use the first or last IP in a subnet (e.g. 10.0. 0.0 and 10.0. 15.255) for hosts as these are required for other purposes.