subnetting questions and solutions pdf

Subnetting questions and solutions pdf

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Subnetting Practice Questions

CCNA 200-125 Exam: Subnetting Questions With Answers

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All it takes is some time and practice! Subnetting is the process of stealing bits from the HOST part of an IP address in order to divide the larger network into smaller sub-networks called subnets. We always reserve an IP address to identify the subnet and another one to identify the broadcast address within the subnet.

In the following sections you will find out how all this is possible. Breaking up large networks into smaller parts would be more efficient and would conserve a great amount of addresses. You will be surprised how easy the concept of Subnetting really is. Imagine a network with a total of addresses a Class C network. One of these addresses is used to identify the network address and another one is used to identify the broadcast address on the network. Therefore, we are left with addresses available for addressing hosts.

If we take all these addresses and divide them equally into 8 different subnets we still keep the total number of original addresses, but we have now split them into 8 subnets with 32 addresses in each.

Each new subnet needs to dedicate 2 addresses for the subnet and broadcast address within the subnet. The result is that we eventually come up with 8 subnets, each one possessing 30 addresses available for hosts. You can see that the total amount of addressable hosts is reduced instead of but better management of addressing space is gained.

We will use a Class C address which takes 5 bits from the Host field for subnetting and leaves 3 bits for defining hosts as shown in figure 1 below. It should be noted that in the past using subnet zero — and all-ones subnet — was not allowed. This is not true nowadays. We know already that for subnetting this Class C address we have borrowed 5 bits from the Host field. These 5 bits are used to identify the subnets. The remaining 3 bits are used for defining hosts within a particular subnet.

The Subnet address is identified by all 0 bits in the Host part of the address. The first host within the subnet is identified by all 0s and a 1. The last host is identified by all 1s and a 0. The broadcast address is the all 1s. Now, we move to the next subnet and the process is repeated the same way. The following diagram clearly illustrates this process:.

Knowing the number of Subnet and Host bits we can now calculate the total number of possible subnets and the total number of hosts per subnet. We assume in our calculations that all-zeros and all-ones subnets can be used. The following diagram illustrated the calculation steps. The steps to perform this task are the following:.

Note that if subnet all-zeros is not used then we are left with 31 subnets and if also all-ones subnet is not used then we finally have 30 subnets. The following table provides all the calculated information. Subnetting is not really that difficult, but it does require a bit of practice. Start with testing your knowledge of subnets and make sure you feel confident about this before you move on to designing your own subnets.

Go ahead and subnet the network address Find the valid subnets, host ranges and broadcast addresses per subnet. If you want to double-check your answer, feel free to leave me a comment and I will provide you with the correct solution.

Have you considered the operational view versus design view of subnetting yet? What Is Subnetting? Why Use Subnetting? The Subnetting Concept You will be surprised how easy the concept of Subnetting really is.

Subnetting a Class C Address Using the Binary Method We will use a Class C address which takes 5 bits from the Host field for subnetting and leaves 3 bits for defining hosts as shown in figure 1 below. The following diagram clearly illustrates this process: STEP 4: Calculate the Total Number of Subnets and Hosts Per Subnet Knowing the number of Subnet and Host bits we can now calculate the total number of possible subnets and the total number of hosts per subnet.

The steps to perform this task are the following: 1. Introduction to Subnetting from the Perspective of Design and Operation.

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Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type Networking Subnetting questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided. You can easily solve all kind of Networking questions based on Subnetting by practicing the objective type exercises given below, also get shortcut methods to solve Networking Subnetting problems. Your router has the following IP address on Ethernet0: Which two statements describe the IP address

Subnetting Practice Questions

All it takes is some time and practice! Subnetting is the process of stealing bits from the HOST part of an IP address in order to divide the larger network into smaller sub-networks called subnets. We always reserve an IP address to identify the subnet and another one to identify the broadcast address within the subnet. In the following sections you will find out how all this is possible. Breaking up large networks into smaller parts would be more efficient and would conserve a great amount of addresses.

CCNA 200-125 Exam: Subnetting Questions With Answers

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The best way of learning subnetting is to do it. Here are a selection of worked examples to help you get started. At the end are some links to online quizes so you can do it yourself. Easiest is to sub net on a byte boundary which would mean a subnet mask of This would allocate 8 bits for the subnet and 8 bits for the host. Now add the 24 bits So we write:.

Networking - Subnetting

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