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Comparison Between Layer 2, Layer 3, and Layer 4 switches

Let's take a look at the differences between Layer 2 switches, Layer 3 switches, and Layer 4 switches. (1) Differences Between Layer 2 switches, Layer 3 switches, and Layer 4 switches The layer-2 switching technology is mature. The layer-

ASP. net mvc 4 practice 2: The first MVC application (below ),

ASP. net mvc 4 practice 2: The first MVC application (below ), In the previous article, VS helped us create a simple operation page and implement the CRUD function. However, this article tries to analyze how it is implemented. 1. View (take Create view as an example ):1 @ * Note: in this section, the left and right sides are enclosed in the comment * @ 2 3 @ *. T

[Spark Asia Pacific Research Institute Series] the path to spark practice-Chapter 1 building a spark cluster (step 4) (2)

Step 2: Use the spark cache mechanism to observe the Efficiency Improvement Based on the above content, we are executing the following statement: 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M00/49/AF/wKioL1QY8tmiGO95AAG6MKKe5vI885.jpg "style =" float: none; "Title =" 1.png" alt = "wkiol1qy8tmigo95aag6mkke5vi885.jpg"/> 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M00/49/AD/wKiom1QY8sLjnB_KAAHXbDhuD_I646.jpg "style =" float

Data structure and algorithm 06 2-3-4 tree

As can be seen from the analysis of the 4th section, binary search tree is a very good data structure, can quickly find a given keyword data items, and can quickly insert and delete data items. But binary search tree has a very troublesome problem, if the tree is inserted in random data, then the performance is good, but if the insertion is ordered or reverse-order data, then the two-fork search tree execution speed becomes very slow. Because the binary tree is unbalanced when inserting values i

[Original] Pro hibernate 3 notes and summary (4) Chapter 2 integrated configuration of Hibernate

/** Author: willpower Source: rifoo Technology (http://www.rifoo.com) Date: 2006-06 Remarks: Reprinted please keep the above statement **/ Today, let's take a look at hibernate integration and configuration. For other Java persistence solutions, it is very easy to integrate hibernate into a Java application.Compared with other solutions, Hibernate designers avoid more common defects and problems and create a lightweight but powerful framework.Lightweight, that is, we do not need a specific J2EE

07. C # Brief description of generic restrictions and empty types (Chapter 3, chapter 2-Chapter 4, Chapter 3.5 ),

07. C # Brief description of generic restrictions and empty types (Chapter 3, chapter 2-Chapter 4, Chapter 3.5 ), While writing articles, I am also learning. I don't have a good understanding of many statements in the book. Read a book and digest it !!! The three chapters are about generics. Finally, let's write the limitations on generics. for the end of this chapter, one end, one begin. See the following

Basic Python syntax [2]: getting started with python to proficient in [4], and getting started with python to proficient

Basic Python syntax [2]: getting started with python to proficient in [4], and getting started with python to proficient The Python basic syntax of the previous blog has been introduced in [2] as a beginner in python. The basic syntax of the previous blog is only a preview version, the purpose is to give you a rough understanding of the basic syntax of python. Th

Differences and features of Layer 2, Layer 3, and Layer 4 switches

Layer-2, layer-3, and layer-4 switches have different characteristics. layer-2 switching is a mature technology. A layer-2 switch is a data link layer device that can identify MAC address information in data packets, forward based on the MAC address, and record these MAC addresses and corresponding ports in an internal

C language computing 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100

C language computing 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100Calculate 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100. Method 1: Calculate 1/1-1/2 + 1/3-1/4 + 1/5-... + 1/99-1/100 # Include Method

Start sencha touch 2 Tour 4

At the end of the article, let's go back and add a contact table. Our last tab contains a frompanel and a fieldset: // We 've added a third and final item to our tab panel-scroll down to see it Ext. Application ({ Name: 'sencha ', Launch :(){ Ext. Create ("Ext. tabpanel ",{ Fullscreen: True, Tabbarposition: 'bottom ', Items :[ { Title: 'home ', Iconcls: 'home ', CLS: 'home ', HTML :[ ' ', ' " "To use tabs, lists and forms to create a simple app ' ]. Join ("") }, { Xtype: 'LIST ', Title: 'blog

2 Methods of form submission controller in ASP.NET.MVC and 4 methods of receiving page submission data from controller

How is form form submitted in MVC? How are controller controllers received?1. cshtml Page Form submission(1) The submission of the ordinary way(2) Special way to submit2, the controller handles the form data four kinds of methodsMethod 1: Use the traditional request dataMethod 2:action parameter name corresponds to table cell name value one by oneMethod 3: Read from the MVC encapsulated formcollection conta

Getting started with Python: asking for all the 1-2+3-4+5...99 and (self-writing)

1 #!/usr/bin/env Pyhton2 #-*-coding:utf-8-*-3 #all numbers of 1-2+3-4+5...99 and (self-written)4 """5 give X a value of 0, assign Y to 0,while true, loop to start6 if the remainder of X and 2 equals 0, then X is an even number, and y assigns equal to Y minus x .7 Otherwise, x is an odd number, and Y's assignment equals

Defend Radish 2 Polar Adventures 3rd and 4 off get golden Radish Raiders

"Defend Radish 2 4" 1, the following figure, first put a bottle and upgrade. 2, two stars in the middle, one will then turret. 3, the following figure, the above one emits stars, then and bottles. 4, the stars, and then the bottle rose to the top, increase the attack. 5, the final map is as follows. 6,

2-3-4 trees

2-3-4 is a type of B tree with a level of 4. It is a self-balancing data structure that can be searched, inserted, and deleted in O (lgn) time. Here N is the number of elements in the tree. 2-3-4 trees are equivalent to the red-black tree, that is, each red-black tree can be

Python Automation Development Learning 4-2

called by __ next__() and constantly returns the next value is called an iterator: Iterator.Use the following method to determine if the previous object is an iteratorFrom collections Import Iteratorprint (Isinstance ("Iterator)") Print (Isinstance (123,iterator)) print (Isinstance (), Iterator) Print (Isinstance ([],iterator)) print (Isinstance ({},iterator)) print (Isinstance ((x for X in range (10)), Iterator))Only the last one can be __next__ (), and only the last one is true, which is the

What is the difference between a layer-2 switch, a layer-3 switch, and a layer-4 switch?

1) layer-2 Exchange Technology The layer-2 switching technology is relatively mature. The layer-2 switch is a data link layer device that can identify MAC locations in data packets.Address information, which is forwarded based on the MAC address, and the corresponding MAC addresses and ports are recorded in a local location.Address Table. The specific workflow is

Learning Notes _java_day13_jstl Tag library (1, 2, 3, 4, 5, 6, 7, 8)

] set the loop variable I, the initial value is 1, traverse to 10.[Cui 8] set sum value to sum + I[Cui 9] step is 2, the default step is 1. Equivalent to the meaning of i+=2! Instead, the default is i++.[Cui] assigns the NS to the item.[Cui]NS is an array that is traversed.[Cui] print each item[Cui] is no different from traversing an array![Cui] because the traversal is a map, so each item is entry type[Cui

Compile a function. When n is an even number, call the function to calculate 1/2 + 1/4 +... + 1/n. When n is an odd number, call the function 1/1 + 1/3 +... + 1/n ., Even number

Compile a function. When n is an even number, call the function to calculate 1/2 + 1/4 +... + 1/n. When n is an odd number, call the function 1/1 + 1/3 +... + 1/n ., Even number First, write a function whose n is an even number: Def peven (n): s = 0.0 for I in range (2, n + 1.0): s + =/I print 'value:', s Write another function with n as an odd number: Def po

1 squared-2 squared +3 squared-4 squared ... -100 squared, the result

ImportJava.lang.Math; Public classTest{ Public Static voidMain (string[] args){ intn,sum=0; for(n=1;n{SYSTEM.OUT.PRINTLN (n);sum+= (Math.pow ( -1, (n+1))) * (n * n); } System.out.print ("1 squared-2 squared +3 squared-4 squared ... -100 squared, and the result is:"+ sum); }} Using the Math method in LangPow (double A, double b)//to denote the B-side of a Public classTest{ Public Static voidMain (stri

1, VGG16 2, VGG19 3, ResNet50 4, Inception V3 5, Xception Introduction--Migration learning

Xception: Here we have a picture of a Scottish barrel, especially my favorite Scotch whisky, Lagavulin. Xception correctly classifies this image as "buckets".The last example is to classify using VGG16: A few months ago, when I finished the game of the Wild Hunt, I took this photo of the monitor. VGG16 's first prediction was "home theater", which was a reasonable prediction because there was a "TV/monitor" in the top-5 forecast.As you can see from the examples in this article, the

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