As a network administrator, you have been assigned a Class C private network of

ID: 662579 • Letter: A

Question

As a network administrator, you have been assigned a Class C private network of 192.168.5.0 and told you need to subnet it into six subnets and you want to have 25 to 30 assignable IP addresses

1. What is the network address of each subnet?

2. How many available assignable IP addresses exist within each subnet?

3. What is the broadcast address of each subnet?

4. How many assignable IP addresses would you have in each subnet if you simply used the suggested range of 192.168.10.0 through 192.168.17.0?

please by steps

Explanation / Answer

Network address is the first address of subnet. This address is used to locate the network, and cannot be assigned to any host. In above example address are the network address.

At this point you have powered with all essential tools for subnetting. In last section of this article we will practically implement what we have learn so far. Due to length of this article I will include examples only from class C.

Class C Subnetting

Default subnet mask of class C is 255.255.255.0. CIDR notation of class C is /24, which means 24 bits from IP address are already consumed by network portion and we have 8 host bits to work with. We cannot skip network bit, when we turned them on. Subnetting moves from left to right. So Class C subnet masks can only be the following:

CIDR

Decimal

Binary

/25

128

10000000

/26

192

11000000

/27

224

11100000

/28

240

11110000

/29

248

11111000

/30

252

11111100

As we have already discussed earlier in this article that we have to have at least 2 host bits for assigning IP addresses to hosts, that means we can't use /31 and /32 for subnetting.

1).network address of each subnet:

192.168.5.0/24

2) available assignable IP addresses exist within each subnet

2number-of-zeros - 2 = number-of- assignable IP addresses

(254)192.168.5.1 - 192.168.5.254

3) broadcast address of each subnet

192.168.5.255