Some Subnetting Practice Problem Solutions practice problem 1. Whatis23.183.62.51inbinary? Solution: dec bin 23 00010111 183 10110111 62 00111110 51 00110011 2. Whatclassaddressisthis? Solution: Itbeginswitha0,soit'sanA. 3. Ifnosubnettinghasbeendone,onwhatnetworkisit(inCIDRnotation) These basic exercises walk your through the structure of an IPv4 address and subnetmasks. Practice with classful and classless IP addresses, calculate the network and broadcast addresses, and determine whether a host is on the same subnet. IPv4 addresses Recognise IPv4 addresse In Video 3, we will show you how to use the Subnetting Cheat Sheet to solve for all seven attributes of Subnetting (explored in video 1) in 60 seconds or less. In Video 4 there are four more practice problems to provide further demonstrations of the method and cheat sheet. The first two problems are fairly straight forward
Subnetting practice problems with solution, we need to create 10 subnets in this scenario There are three (3) usable unicast IP address classes - A, B and C The first byte/number/octet identifies the class that the IP belongs to—Classification -Correct Classification is a starting point, for mastering IP subnetting What We Know or Should (Cont.) Class Example # of Networks # of Hosts on each networ Enter the valid host range for the network that the IP address 10.69.101.225/27 is a part of
6. You still are using the default mask for your IP network 192.168.1.. You need to subnet your network so that you have 5 additional networks, and 60 hosts per network. Is this possible, and what subnet mask should you use? 7. You have sub-netted your class C network 192.168.1. with a subnet mask of 255.255.255.240 Understand IP Addresses. An IP address is an address used in order to uniquely identify a device on an IP network. The address is made up of 32 binary bits, which can be divisible into a network portion and host portion with the help of a subnet mask. The 32 binary bits are broken into four octets (1 octet = 8 bits) These are basic subnetting questions. You should be able to do these without any problems if you plan to work in networking or are studying for a certificate such as the CCNA. Once you have these down, try the more advanced questions. If you need help, take a look at our how to and our subnetting reference cheatsheet subnettingquestions.com - Free Subnetting Questions and Answers Randomly Generated Online. Questions are configured for internal IP address ranges only. Subnet zero is allowed as per Cisco standard practice. If you have learnt subnetting from organisations other than Cisco your answers may differ by up to two subnets per network (see explanation ) Subnetting Examples . In this part, we will see four different Subnetting Examples.With these Subnetting Examples, you will learn this lesson very well.. IP Subnetting Examples: Example 1. In the first one of the Subnetting Examples, we will use, 192.168.5.85 /24 Address.Let's determine the network and host part of this address.This is the first example, so we are starting with an easy example
It explains IP addressing and network addressing such as IP address, subnet mask, IP address types and IP classes in detail. Basic Subnetting in Computer Networks Explained. This tutorial is the second part of the article. It explains what Subnetting is and why it is necessary in computer network along with the advantages of Subnetting Now let's learn how to find the number of IP addresses for a subnet mask or CIDR notation. Let's say you want to know how many IP address you have given a subnet mask. Mask - 255.255.255.224 . Take 224 and subtract that from 256. So 256 - 224 is 32, so that means you have 32 IP addresses available for the mask of 255.255.255.224
2 hosts => /30 (dropping all o's and 1's) 32 /30's will easily fit in the last /22 without hitting the final 1's subnet. 9. VLSM Class B Example. So we have the whole network covered. Still have 60 /22 blocks left - over 60,000 hosts. Posted by KAZIPUR Information Technology-KIT at Monday, December 28, 2015 We can use Subnetting to perform a few tasks; to find the Network Id and the Broadcast address of a given network, also to find out to what subnet a specific IP address belongs, but mainly, we will use subnetting to divide a network space into smaller networks called subnetworks or Subnets, and dividing a network into smaller subnets has a few.
IP Subnetting. For the following exercises, come up with the subnet (wire) address, broadcast for that subnet, the number of possible hosts, the first and last valid host address for that subnet. Note that Answer are just the answers to these questions, Solution are the answers and how they were derived. Example: Questions: 1. Answer Solution. 2 Protected: IP Subnetting Live Course: Exercises. Try Advanced Search to filter posts by question type, lab type and book chapter Go to Advanced Search.
As mentioned earlier, for every subnet, the first and the last IP addresses are reserved: First IP Address = Network ID. Last IP Address = Broadcast Address. The broadcast address is used for a specific type of network traffic that is destined for every device attached to a network. Example: IP Address = 192.168.1.1 Subnet Mask = 255.255.255 In this activity, you are given the network address of 192.168.100./24 to subnet and provide the IP addressing for the Packet Tracer network. Each LAN in the network requires at least 25 addresses for end devices, the switch and the router. The connection between R1 to R2 will require an IP address for each end of the link For Class C IP addresses, the first three octets (24 bits / 3 bytes) represent the network ID and the last octet (8 bits / 1 bytes) is the host ID. Class C IP Addresses range from 192.0.0.0 to 223.255.255.255, with a default subnet mask of 255.255.255. (or /24 in CIDR)
In order to challenge your mind, please do the following subnet exercises: Class C: We have an IP of 192.168.2. /24; our network design requirement is 16 subnets! We have an IP of 192.168.150. /24; our network design requirement is 14 hosts per network Answers: Subnet Design Exercise 3. Today's post shows the solution to subnet design exercise 3, specifically the IP subnets. This post isn't all that meaningful without reading the other one first - after that, and after you take a crack at creating the design yourself, dive in! Here are some useful links a. Fill in the following table with IP addresses and subnet masks for the router interfaces: Instructor Note: These are suggested IP addresses based on using the first 6 subnets from the table above as assigned to each segment. Device Interface IP Address Subnet Mask R1 GigabitEthernet 0/1 192.168.10 .1 255.255.255.22
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. After subnetting, we end up with NETWORK SUBNET HOST fields. We always reserve an IP address to identify the subnet and another one to identify the broadcast address within the subnet Classless Subnetting (Variable Length Subnetting) As you know there are IP classes of IPv4 addresses. With these IP classes, there are fixed subnets that has fixed number hosts and networks. For example a class C address has 24 bits network part and 8 bits host part. Or in Class A addresses, this is reverse Your company wants to utilize the private Class C IP Address of 192.168.1.. You are tasked with Subnetting the Address to get the most networks with at least 30 Hosts per Subnet. How many Networks will be created after you subnet? Also, what is the first usable IP Address in the Second Network range This is an exercise in subnetting. You will compute a subnet mask and the IP numbers in each subnet. 1) assume you received a class-C IP address (221.221.221.0) and you are setting up a network with 4 subnets, each with 50 workstations
Lab#2: IP Addressing and Subnetting Subnetting Subnetting is the practice of dividing a network into two or more networks. Subnet mask Subnet mask is a 32-bit value that allows the receptionist of IP packet to distinguish network ID portion in the IP address form the host ID portion. Class A, B, and C networks have default masks, also know Learn IPv4 addressing and subnetting. Understand CIDR and subnet in networking. Classless addressing assignment. Creating subnets from the allocated IP addre.. Determining The Subnet Of A Given IP Address. Determining The Broadcast Address Of A Subnet Tightest Mask calculations. Determining The Range of Valid IP Addresses on a Subnet. Exam 4: Double-checking The Results Of Someone Else's Subnetting. Meeting Multiple Client Requirements (subnets and hosts) Troubleshooting . Exam 5: Identifying. Subnetting a Network Address. In order to subnet a network address, The subnet mask has to be extended, using some of the bits from the host ID portion of the address to create a subnetwork ID. For example, given a Class C network of 192.17.5. which has a natural mask of 255.255.255.0, you can create subnets in this manner Introduction to IP Addressing and Subnetting the Easy Way. Bestseller. Rating: 4.6 out of 1. 4.6 (899) 8,897 students. Try it free for 7 days. Current price $14.99. Original Price $49.99. Buy now
G.Bianchi, G.Neglia, V.Mancuso Subnet Address & Mask ÎHost IP address: 159.100.9.18 ÎClass B - network mask: 255.255.. ÎSubnet Mask ÖLonger than natural class mask; Length set by administrato Solution. 1. The address 172.24.100./24 is private. 2. Maximum number of hosts = 2^x - 2 = 2^8 - 2 = 254. The reason we have to subtract 2 from the final number is because there are always 2 addresses allocated for each address block: the subnet ID (the first address) and the broadcast address (the last address); for example, if you have 5 bits for hosts, you can have 30 hosts, because 2 of. Understanding the hierarchical structure of the IP address and how to modify that hierarchy in order to more efficiently meet routing requirements is an important part of planning an IP addressing scheme. This chapter reviews the process of subnetting IP networks. First, we review a process for subnetting IPv4 networks
A subnetting is a network within a network. Learn how subnetting makes network routing more efficient, and explore how subnet masks and IP address. As networks become larger and more complex, the traffic traveling through them needs more efficient routes On a Cisco, by the way, you have to enable subnet-zero in order to use it (ip subnet-zero from global config mode), and it is on by default in Cisco's IOS version 12. Another change with IOS 12 is that IP directed broadcasts are disabled by default (to enable them, use the ip directed-broadcast on the targeted interface). 1 Step 4 - Subnetting and the Subnet Mask. To subnet a network is to create logical divisions of the network. Subnetting, therefore, involves dividing the network into smaller portions called subnets.Subnetting applies to IP addresses because this is done by borrowing bits from the host portion of the IP address
What Are IP Addresses & Why Do We Need Them? 3 Figure 1.2: Source and destination addressing Now that we have established what IP addresses are and what their purpose is, how do we keep the IP addresse See if this solution works for you by signing up for a 7 day free trial. Unlock 1 Answer and 9 Comments. Try for 7 days. The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange. -Mike Kapnisakis, Warner Bros
VLSM Addressing Schemes. Variable-length subnet masking (VLSM) subnetting is similar to traditional subnetting in that bits are borrowed to create subnets. The formulas to calculate the number of hosts per subnet, and the number of subnets created still apply. The difference is that subnetting is not a single-pass activity Subnet or Subnetwork--A smaller network created by dividing a larger network into equal parts. TCP/IP--Used broadly, the set of protocols, standards, and utilities commonly used on the Internet and large networks. Wide area network (WAN)--A large network that is a collection of smaller networks separated by routers Assign Subnet 4 to the WAN link between R1 to R2: 192.168.100.128 /27 Step 3: Document the addressing scheme. Fill in the Subnet Table using the following guidelines: a. Assign the first usable IP addresses to R1 for the two LAN links and the WAN link. b. Assign the first usable IP addresses to R2 for the LANs links Subnetting is a way of partitioning a network at the IP level by dividing a block of addresses into a number of smaller sets. To understand what is happening, first look at some small numbers rather than a full IP address. Take the set of 'addresses' 100 to 129. If computers used decimal representation, this network of 30 addresses might. VLSM Subnetting stands for Variable Length Subnet Mask. In VLSM subnetting, we can get different sizes and different subnet masks for different networks. In.
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. After subnetting, we end up with NETWORK SUBNET HOST fields. We always reserve an IP address to identify the subnet and another one to identify the broadcast subnet address The IP address lies in the same subnet range as the host address. Step 1 and Step 2 eliminate addressing problem in the network segment to which the host is connected. The next network segment is the point-to-point link between RouterA and RouterB. The subnet mask of /30 gives subnets 0,4,8,12.128
What is the subnet mask? The Prefix is the same for all subnets when subnetting with fixed hosts - this means that all subnets will have the same number of hosts. The Prefix will be /27 to allow 8 subnets to be created. /27 = 1110 000. Converting the binary number 1110 0000 to decimal will give the last octet of the subnet mas Do exercises, ( you can find a lot on internet) and verify your resaults with an ip calc. In real practice ( at least for me on a small/medium data center ) to see how many subnets i would have an /16, would be sensless, casue the bigest subnet we have is a /22 1st, is not possible to subnet a /24 in two subnets of 200 and 50. The closest you can get (without too much tinkering), is 4 subnets of 62 each, three of them would go on the same physical LAN (or vlan) with secondary address on the router. Kind of a kludge, but no alternative, excpet the one of giving PC private addresses, thing that after 10.
Subnetting Exercise #1 Assume that you have been assigned the 132.45../16 network block. You need to establish 8 subnets. 1. _____ binary digits are required to define eight subnets. 2. Specify the extended-network-prefix that allows the creation of 8 subnets. _____ 3 Sum of subnet = 25 - 2 = 32 - 2 = 30. Answer : 30 useable subnets and 6 useable hosts on each subnet . You are assigned a Network ID of 198.162.10 and asked to configure the network to provide at least six useable subnets with at least 25 hosts on each subnet. What is the BEGINNING IP address of the LAST useable subnet in the network
Question 5. SURVEY. 120 seconds. Report question. Q. Your company wants to utilize the private Class C IP Address of 192.168.1.. You are tasked with Subnetting the Address to get the most networks with at least 30 Hosts per Subnet So the IP subnets are going up in increments of 64, and as you can also see from the red line we are subnetting on the 4th octet. This IP subnet is 198.22.45.128. To calculate the next IP subnet we add 64 to the octet we are subnetting on, which is the 4th octet in this case. 128 + 64 = 192. So the network address of the next IP subnet is 198. Solution for Subnetting Exercise #2 1. Assume that you have been assigned the 200.35.1./24 network block. Define an extended-network-prefix that allows the creation of 20 hosts on each subnet. A minimum of five bits are required to define 20 hosts so the extended-network- prefix is a /27 (27 = 32-5). 2 In this activity, you are given the network address of 192.168.100./24 to subnet and provide the IP addressing for the network shown in the topology. Each LAN in the network requires enough space for, at least, 25 addresses for end devices, the switch and the router Constant subnetting practice is the only way to pass your CCNA! This site automatically generates questions on subnetting using a random number generator. IPv4 subnetting - random question generator v1.6. Question: You need to divide the network 172.18.. into 50 subnets. Each subnet will need to have room for up to 900 hosts
2-3 Subnetting. 2-3 Subnetting freeccna 2013-12-12T17:07:33-06:00. In case of class A and B IP addresses, each of them provides for a large number of hosts. For class A, the total numbers of hosts available are 2 24 -2 or 16,777,216 hosts (class A has 24 bits available for host component and each bit can have two values - 0 and 1 Chapter 8 IP Addressing 71 Chapter 9 Subnetting IP Networks 85 Chapter 10 Application Layer 97 Chapter 11 It's a Network 105 Part II: Routing and Switching Essentials Chapter 12 Introduction to Switched Networks 117 Chapter 13 Basic Switching Concepts and Configuration 125 Chapter 14 VLANs 135 Chapter 15 Routing Concepts 14
C. 192.168.10.30. D. 192.168.10.127. Answer: Option C. Explanation: A /28 is a 255.255.255.240 mask. The first subnet is 16 (remember that the question stated not to use subnet zero) and the next subnet is 32, so our broadcast address is 31. This makes our host range 17-30. 30 is the last valid host IP Subnetting Concepts¶. When configuring TCP/IP settings on a device, a subnet mask (Or prefix length for IPv6) must be specified. This mask enables the device to determine which IP addresses are on the local network, and which must be reached by a gateway in the device's routing table Automatic Private IP Addressing 174 Subnetting 176 Purpose of Subnetting 176 Subnet Mask Notation 177 Subnet Notation: Practice Exercise 1 178 Subnet Notation: Practice Exercise 1 Solution 178 Subnet Notation: Practice Exercise 2 179 Subnet Notation: Practice Exercise 2 Solution 179 Extending a Classful Mask 179 Borrowed Bits 17 Free online subnetting questions. Q 2. What are the network address, broadcast address, and the subnet mask of the network includes a host with the IP Address below
Solution: Hence, 10.0.0.0 is a Class A IP Address and by default, its network bit is 8 and host bit is 24. A/Q there are 40 Subnets available and we need another 60 subnets. It means the total subnet we need is 40+60=100. So, we have to borrow 7 bits from the host (27 = 128 Subnets) An IP address is a thirty-two-bit binary number. The thirty two bits are separated into four groups of eight bits called octets. However, an IP address is represented as a dotted decimal number (for example: 205.57.32.9). Since an IP address is a binary number represented in dotted decimal format, an examination of the binary numberin
Algorithm for deriving Subnet information • Eg given the IP address 192.168..100 with the subnet mask of 255.255.255.240 Or 192.168..100/28 - What is the network number - What is the broadcast address - What are the valid IP hosts for the subnet Subnet & Routing 57 58 on January 17, 2020 · 8 min read. In this exercise we will look at the basics of subnets in AWS Virtual Private Cloud. We will examine CIDRs, reserved IP addresses and subnet strategies. This is exercise 1.5 for the AWS Advanced Networking Specialty training. For an explanation and overview of all exercises, see the overview post Example-03: Consider-. We have a big single network having IP Address 200.1.2.0. We want to do subnetting and divide this network into 3 subnets. Here, the subnetting will be performed in two steps-. Dividing the given network into 2 subnets. Dividing one of the subnets further into 2 subnets Take a piece of paper and write down the 8 bits for yourself. GNS3Vault.com Page 5 of 97 f How to Master Subnetting Exercise 1: See if you can solve the following decimal to binary calculations: Bits 128 64 32 16 8 4 2 1 12 54 187 192 44 147 Now try to do it the other way around and calculate from binary to decimal: Bits 128 64 32 16 8 4 2 1 1. 192.168.10.255. The network 192.168.10. is divided into sixteen subnets, each subnet has 16 total IPv4 addresses and 14 usable IPv4 addresses. Two IPv4 addresses are used in each subnet to represent the network address and the directed broadcast address. Class C Subnetting can be summerized as below. Subnet Bits
The Subnet Calculator will automatically mention the IP address towards the end when you enter the range. From the drop-down menu in the Quantity tab, select the number of subnets. Set the size of the subnets from the size tab if you wish. The Side Tab sts the low range of subnets. Once you've entered the details, click on the Calculate button The network 172.16.. is divided into four subnets, each subnet has 16,384 total IPv4 addresses and 16,382 usable IPv4 addresses.Two IPv4 addresses in each subnet are used to represent the network address and directed broadcast address (first and last IPv4 addresses in a subnet block). The subnet mask to use for 2-bit subnetting for a Class B network is 255.255.192. In this type of subnetting, you will be given no of required IP addresses and you have to find the Network Blocks accordingly. Let's take the same IP address 198.168.10. , This time it is given that I have to configure such a network in such a way that given network able to provide 50 IP addresses and 20 IP addresses Now use our above formulas to find the answers: The number of newly created subnets = 2 16 = 65536 (with 16 is the borrowed bits) The number of hosts per subnet = 2 8 - 2 = 254 (with 8 is the bit 0s left in the 255.255.255. subnet mask) Exercise 2. Your company has just been assigned the network 130.0.0.0 A short IP subnetting tutorial. Subnetting is explained with examples. Post assessment exercises after the course gives you hands on practice.By the end of this subnetting course, you should be able to: Define subnet and subnet masks; Understand IP subnetting maths ; Calculate Network address; Define private address; Subnet an IP network in a.
Note: To calculate available IP subnets and hosts, (i) Number of subnets = 2 n where, n is the number of 1s in the subnet ID. (ii) Number of available hosts = 2 n-2 where, n is the number of 0s in the host ID. For example: As said earlier, In classful subnetting, for a class C IP 192.182.21.103, the subnet mask 255.255.255. in binary is as follows IP Address Subnet Requirements. An IP-routed network design requires that you examine the interrelationship between the number of hosts per subnet and the number of subnets. An IP-switched network design evaluates only the number of WAN connections. Your network design must optimize the number of subnets and the number of hosts per subnet Finding a subnet from an IP address can refer to two things—physically locating the subnet on a device or calculating the IP subnet. While there are common methods for manually finding subnets on Windows, Mac, and Linux, an IP subnet calculator tool is designed to make it easier to find the IP subnet numerically Find the broadcast the address. Copy first octet (mask 255.0.0.0), first two octets (mask 255.255..0) or first three octets (mask 255.255.255.0) from IP address. This is the same in 'Find the subnet number', step 1. Put 255s in the remaining octets. Find range of valid IP addresses. To find the first valid IP address, copy the subnet. If the first part of the IP address is reserved for the network part and the remaining is for the host, it is a Class A IP address. Class A networks are vast, in which 17 million hosts or computers are connected. The Class A default Subnet Mask is 255.0.0.0. The first octet of Class A IP address varies from 0 to 127
IP Addressing and Subnetting. Exercise 1. Write the default subnet Masks for the Class A, Class B and Class C IP addresses. Answer: IP Address Class. Total #of Bits for network/ Host ID. Default Subnet Mask First Octet. Second Octet. Third Octet. Fourth Octet. Class A (08)(24) 11111111 00000000 00000000 00000000 (255) (0) (0) (0) Class B. 16. Subnetting IP Address Quiz. Computer networks can be confusing especially to people without the knowledge and understanding. Among the many concepts, subnetting IP addresses is one, which is extensively studied. Gauge your knowledge on subnetting IP... Subnet the IP Address 203.10.93. /24 into 30 Subnets That makes our first usable IP 18.160..1 and our last IP is 18.191.255.254. And there's the answer for the IP address subnetting for this IP address of 18.172.200.77/11. Now that you understand the process that I use to understand this during an exam, you can of course try this yourself subnetting a class B is not different from subnetting another class. ok first problem: magic number= 256-128=128 is the subnet increment so subnets are: 172.16..-172.16..128 and in the first subnet 172.16..1 is first IP, 172.16..127 is broadcast so last ip is 172.16..126. now on to 2nd problem the IP address -subnet masking: extracting the subnet ID -masks are 32 bits long for IPv4 addresses •If a bit in a subnet mask = -1 this bit position is part of the physical network ID (network ID + subnet ID) -0 this bit position is part of the host ID •How split physical network ID into network and subnet parts
Network Layer Addressing and Subnetting. By Ross Bagurdes. In this course, you will walk through the essentials of an IP address and then take a deep dive into subnetting IPv4 networks into smaller networks, as well as learn IPv6 addressing and how we can divide the very large IPv6 address space into smaller subnets. Start a FREE 10-day trial On the Associate subnet blade, select WGVNet1 on the Virtual network drop down. Select Management on the Subnet dropdown. Select OK at the bottom of the Associate subnet blade. Exercise 7: Configure Site-to-Site connectivity. Duration: 60 minutes. In this exercise, we will simulate an on-premises connection to the internal web application
CCNA Exercise Lab 3, Write the subnet, broadcast address, and valid host range Questions With Answers provided by assignmenthelp.net 1. IP Subnetting Step #1: Requirements Analysis. IP Subnetting: Practical Subnet Design and Address Determination Example. When educators ask students what they consider to be the most confusing aspect in learning about networking, many say that it is IP address subnetting. While subnetting isn't all that difficult in concept, it can be a bit.
IP Subnet Calculator . The IP Subnet Mask Calculator enables subnet network calculations using network class, IP address, subnet mask, subnet bits, mask bits, maximum required IP subnets and maximum required hosts per subnet. Results of the subnet calculation provide the hexadecimal IP address, the wildcard mask, for use with ACL (Access Control Lists), subnet ID, broadcast address, the subnet. Because of the last subnet (172.16.128./24), a good summarization is not possible with these subnets. Now 16 bits are fixed represents the network portion and the remaining is 16 bits are our host portion. The summary address is 172.16../16. We must drop back to the classful summarization of 172.16../16 There are two approaches to subnetting an IP address for a network: Fixed length subnet mask (FLSM) and variable-length subnet mask (VLSM). In FLSM subnetting, all subnets are of equal size with an equal number of host identifiers. You use the same subnet mask for each subnet, and all the subnets have the same number of addresses in them
IP Address Management in Enterprise Scale Landing Zones. 2021-01-30 00:00:00 +0000 · 0 Comments. Within this blog post, we discuss the implementation of an IP Address Management Solution (IPAM) and Policy Driven Governance. As such, we want to show how Enterprise-Scale can support Subscription Democratization by providing DevOps teams with the. SOLIDserver is a unified DDI management solution that enables you to manage and deploy IP addressing plans and VLANs with DNS and DHCP services from a single tool and in one operation. For example, It is possible to create, in one operation, a /24 subnet with a range of IP addresses allocated through DHCP service The practice of dividing the network is called subnetting. Need for a IPv4 subnet calculator. Every subnet has an address to represent it and these subnets are interconnected via router. The router needs network address and subnet mask to find out whether the incoming IP packet has to be routed to any of its subnetwork The next subnet mask, 255.255.255.224, allows for eight subnets to be created, but each subnet is limited to 30 hosts (256 / 8 =32, and 32 -2 = 30). The solution is to use variable-length. Subnetting is an integral part of IP networking. It is used to limit the usage of an IP address to within a few devices. CompTIA Network+ certification allows you to learn and master practices like Subnetting in order to prioritise your network security
