# CCNA IP Subnetting Questions and Answers

Are you preparing for the CCNA certification exam and looking for practice questions on IP subnetting? Look no further! In this blog post, we have compiled a comprehensive list of CCNA IP subnetting questions that will help you sharpen your skills and test your understanding of this important networking concept. Whether you are a beginner or an experienced professional, these questions will challenge you and provide the practice you need to ace the exam. So, let’s dive in and improve our subnetting knowledge!

## Question 1:

Given a network address 192.168.1.0/24, how many subnets can be created?

Answer:

To determine the number of subnets, we need to borrow bits from the host portion of the IP address. In this case, the subnet mask is /24, which means there are 8 bits available for the host. To create subnets, we borrow some of these bits, and the formula to calculate the number of subnets is 2^n, where ‘n’ is the number of borrowed bits.

Since we have 8 bits available, we can borrow up to 8 bits. Plugging the value of ‘n’ into the formula, we get:

Number of subnets = 2^8 = 256 subnets

## Question 2:

Given an IP address 172.16.0.0/16, what is the subnet mask?

Answer:

The subnet mask determines the network and host portions of an IP address. In this case, the subnet mask is /16, which means the first 16 bits represent the network portion, and the remaining 16 bits represent the host portion. To write it in dotted decimal notation, we convert the binary representation of the subnet mask:

11111111.11111111.00000000.00000000

Converting this binary representation to dotted decimal form, we get:

255.255.0.0

## Question 3:

What is the maximum number of hosts that can be accommodated in a subnet with a subnet mask of /28?

Answer:

To determine the maximum number of hosts, we need to calculate the number of available host bits. In this case, the subnet mask is /28, which means there are 4 bits available for the host. The formula to calculate the number of hosts is 2^n – 2, where ‘n’ is the number of available host bits. Subtracting 2 is necessary because we exclude the network address and the broadcast address from the available host range.

Plugging the value of ‘n’ into the formula, we get:

Number of hosts = 2^4 – 2 = 16 – 2 = 14 hosts

## Question 4:

What is the broadcast address of a subnet with the IP address 10.0.0.0/24?

Answer:

The broadcast address is used to send a message to all devices within a network simultaneously. To calculate the broadcast address, we set all the host bits to ‘1’ in the binary representation of the host portion. In this case, the subnet mask is /24, which means the last 8 bits are available for the host. Therefore, the broadcast address is:

10.0.0.255

## Question 5:

Given an IP address 192.168.10.50/26, what is the range of assignable IP addresses?

Answer:

The range of assignable IP addresses is the set of IP addresses that can be assigned to hosts within a subnet, excluding the network address and the broadcast address. In this case, the subnet mask is /26, which means there are 6 bits available for the host. Therefore, the range of assignable IP addresses is:

192.168.10.1 to 192.168.10.62

These are just a few examples of the CCNA IP subnetting questions you can expect in the certification exam. To solidify your understanding and practice further, we recommend solving more subnetting questions available in study guides, online forums, and practice exams.

## Conclusion:

In this blog post, we covered several CCNA IP subnetting questions and provided detailed answers to help you enhance your subnetting skills. By practicing these questions, you will gain confidence in subnetting and be well-prepared for the CCNA certification exam. Remember to understand the concepts behind each question and practice subnetting on real-world scenarios to reinforce your knowledge. Good luck with your studies!