how subnetting works

Read Catalogue I. IP Address Basics 1.1 IP Address structure and classification 1.2 special IP address 1.3 subnet mask 1.4 IP address request two. subnetting 2.1 subnetting Concept 2.2 Class C sub-network Division 2.3 subnetting Step 2.4 subnetting Case 2.5 sub-division Network considerations 2.6 Why

IP addresses are classified into five categories--------------------------------------------------------------------------------------------------------------- ----------------------------------------------------the meaning of the subnet mask and subnetting according to the subnet maskThe subnet mask is used to divide subnets. For example, a Class A network can hold 16777214 hosts. However, in practice, it is impossible to use a class A network only f

addresses: "192.168.5.253/30, 192.168.5.254/30"Broadcast address: "192.168.5.255/30"quickly divide subnets to determine IPLet's take example 2 for example:The topic requires that we divide the 192.168.5.0/24 network address into subnets that can accommodate 101/54/2 hosts. Therefore, we need to determine the host location, and then determine the network bit based on the host bit, and finally determine the detailed IP address.① determining the host bitSet the number of hosts that you need to be

LAN.WANThe last network segment is a WAN connection and requires 2 host addresses. Support WAN links with just 2 primary seats. 2^2-2 = 2.This leaves 8 bits to define the local subnet address. The next available address block is 172.16.2.192/30.Address: 172.16.2.192Binary representation:10101100.00010000.0000010.11000000Mask: 255.255.255.252Represents 30 bits in binary:11111111.11111111.1111111.11111100The IPV4 host address range provided is:172.16.2.193 to 172.16.2.194, broadcast address is 17

11111111Example of subnetting:1, a company to apply to a class C IP address, but to connect 6 subsidiaries, the largest one sub-The company has 26 computers, each subsidiary in a network segment, the subnet mask should be set to?A: Assume that the C network address is 192.168.0.0/24,6 subsidiary, namely Divide 8 subnets, two not, each subnet can hold 30 IP192.168.0.0-192.168.0.31/27-255.255.255.224192.168.0.32-192.168.0.63/27-255.255.255.224192.168.0

application, a company applied for a public network, such as 201.1.2.0/24, but the company has two groups, a group of the number of hosts is 6, the number of hosts in the other group is 4, and do not want the two groups of hosts to communicate with each other, if you apply for a public network , the cost is too high, so it is necessary to divide this network into multiple subnets. The subnet is divided by the first m bits in the host bit in the network address and the network address bits as th

mask calculation. Network ID Results We all know that the network ID part is unchanged, the host ID portion becomes 0, then in the calculation of the network ID, first look at how many bits in the subnet mask to represent the network, corresponding to the IP address conversion to binary only the previous few, such as 192.168.176.15/ 19, the network ID altogether 19 bits, then the network ID the first two bytes is 192.168.x.0 to change the third byte. So how do you quickly calculate the value o

subnets will need to occupy 1 bits of the original host identity bit. At this point the network number bit becomes 22 bits and the host label becomes 7 bits. Similarly borrowing 2 host bits can divide a class C network into 4 subnets ... How did the computer know if the network was divided into subnets? This can be seen from the subnet mask. The subnet mask is as 32bit as the IP address, and the subnet mask is determined by using "1" for all corresponding bits that identify the network number i

First, a sample from a Shehiren teacher's book is referenced:Host H1 the process of sending packets to H2:First, with the subnet mask in the subnet:255.255.255.128 and target host H2 IP address:128.30.33.128 and get network number: 128.30.33.128. Obviously this does not match the network number of Subnet 1:128.30.33.0.The datagram is then forwarded by the default route R1 Subnet 1. At this point, R1 will look for its own routing table. Think of the host address and subnet mask of the H2, and whe

Personal Summary: This article on the JS bottom of the working principle is introduced.Original: HTTPS://BLOG.SESSIONSTACK.COM/HOW-DOES-JAVASCRIPT-ACTUALLY-WORK-PART-1-B0BACC073CFOne, engine, runtime, call stackThis is the first chapter of how JavaScript works. This chapter provides an overview of the language engine, runtime, and call stack.In fact, there are a lot of developers who use JavaScript every day in their daily development but don't know t

Personal Summary:1.webassembly Introduction: Webassembly is an efficient, low-level bytecode for developing network applications. Allows languages other than JavaScript (such as C,c++,rust and other) to be used in Web applications to write applications and then compile (early) WebAssembly.This is the sixth chapter of how JavaScript works.Now, we'll dissect how WebAssembly works, and most importantly, its performance with JavaScript: Load time, executi

Personal Summary: It takes 15 minutes to finish this article, this article introduced the abstract syntax tree and JS engine parsing these syntax tree process, referred to lazy parsing-that is, the process of converting to AST is not directly into the function body parsing, when the function body needs to be executed when the corresponding conversion. (because some function bodies are simply declared, and are not actually called)Parsing, Syntax abstraction tree, and 5 tips for minimizing parsing

inheritance works, let's analyze the Inputfield subclasses that inherit from the Component class.class InputField extends Component { constructor(value) { const content = `Here is the output of using Babel to process the above example:var InputField = function (_Component) { _inherits(InputField, _Component); function InputField(value) { _classCallCheck(this, InputField); var content = ‘In this example, the inheritance logic is enca

animation is a collection of ease-in and Ease-out. This is illustrated below:Do not set the animation duration too long, otherwise it will give a feeling that the interface does not respond.Use ease-in-out CSS keywords to implement ease-in-out animations:transition: transform 500ms ease-in-out;Custom easingYou can customize your own easing curve, which allows you to control animations in your project more effectively.In fact ease-in , linear and the ease keyword maps to a predefined Bezier curv

Describe the content of the work, the platform or link from which the work originated, the strengths and weaknesses of the work you feel, the reasons you think are the best three in your mind, and what you feel and expect from your team project after the investigation. Works One Contents of the work:Phylab-webOfficial Description:Support by selecting the physical experiment serial number into the corresponding Physical Experiment Preview

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After reading a lot of excellent works, I think that the three best works include the second China "Internet +" university students Entrepreneurship Innovation Competition, Nanchang University, "nursing experts"------Remote Monitoring service robot; 2015-2016 the third National University of Innovation competition in IoT application, The Internet of things intelligent classroom of anqing Teachers College, a

difference between static and dynamically allocated memory *To fully understand how dynamic memory allocation works, we need to take some time to understand pointers, which may be a bit off the ^.^. If you are interested in pointers, please leave a message and we will discuss more about pointers in a later section.Memory Allocations in JavaScriptNow, we'll show you how to allocate memory in JavaScript (the first step).By declaring variable values, Ja

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