IP subnetting and variable length subnet masks (vlsm)
Subnetting Basics
Advantages of subnetting:
1. reduce network traffic
2. Improve Network Performance
3. simplified management
4. Easy to expand geographic scope
How to creat subnets
How do I divide subnets? First, you must note that the power of 2: The power of 2 0 to the power of 9 are: 1, 2, 4, 8, 16, 32, 64,128,256, and 512, respectively. it is also worth noting that the subnet division uses the
First, we know that due to the limited number of IP addresses in the V4 version, we need to continue to divide subnets, reduce the number of hosts and increase the number of networks on the premise of the original subnet, to avoid wasting too many host addresses in a subnet as much as possible, vlsm works for this purpose.
Benefits of vlsm:
Efficient use of IP addresses
Routing aggregation is more pow
Automatic summary is summarized to 172.16.0.0/16
If you are manual, you are happy to summarize where it is, and where it is, just as needed!
For example, you can aggregate the data to 172.16.0.0/20 or 172.0.0.0/8.
For example, if the ISP gives tnt a 210.231.223.0/24 network, if it is hidden by default, it is/24, then there is only one network segment and there are only 254 addresses, then in a practical application, TNT only assigns addresses of 64 hosts to Qingdao Company, which must b
Where is the Win10 calculator? Three ways to open the Win10 calculator: graphic introduction, win10 Calculator
The brand-new windows 10 system has brought about many new features and changes. Among them, the position of the win10 calculator has changed a lot, so many netizens think that the win10
DescriptionThe calculator is written primarily to practice regular expressions and Python basics: code comparison low!Run processEnter your calculation formula and the calculator will output the results to the screen (the steps will be printed here); Exit (Exit/quit)Mycalc> 1-2 * ((60-30 + ( -40/5) * (9-2*5/3 + 7/3*99/4*2998 +10 * 568/14))-( -4*3)/(16-3*2)) 1-2* ((60-30+ ( -40/5) * ( 9-2*5/3+7/3*99/4*2998+1
1 We in the Apple 5s main screen, with the finger from the lower screen to pull up, and then in the open "Control Center" we click on "Turn Screen" then we open the interface and click "Vertical direction lock." (pictured below)
2 into the "add-on" we Click "Calculator" Now you will find that the calculator is still very simple oh.
3 Rotate the mobile phone screen, when your mobile phone display horiz
The new WINDOWS10 system brings a lot of new features and changes, of which Win10 's position on the calculator has undergone a lot of changes, resulting in a lot of netizens think Win10 calculator is missing, then, Win10 calculator where? How to open it? In response to this problem, this article is for everyone to answer http://hovertree.com/menu/windows/At the
A very small JavaScript Web calculator, the interface landscaping I think it is good, after all, in the absence of any picture modification of the case, very good-looking, and functional quite practical, you can complete the basic mathematical arithmetic, click "Run code" can be run to see the effect.
[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]
Simple JS calculator implementation code and js calculator code
Look at the calculators in your cell phone. They are divided into common calculators and scientific calculators.
If you think your head is not big enough, you can implement a normal version (supporting basic continuous operations such as positive, negative, addition, subtraction, multiplication, division, and not providing the brackets functio
Simple calculator function based on javascript, javascript Calculator
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[Experience compilation principles] compile a simple calculator and compile a principle Calculator
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Win10 Build 9926 introduces a new version of the modern calculator, which uses a newly designed UI that is generally more flat, and that complements the WIN10.Can't you use the modern calculator without upgrading to WIN10?NO ... Second day at home is also bored, did not go to the so-called relatives, since bored, just imitate Win10 write a calculator bar.Windows
PAT 06-1 simple calculator, pat06-1 Calculator
I'm sorry if you want to see what a simple calculator can do. This is not something you want, here, the question is set to "only allow addition, subtraction, multiplication, division", "All integers", "same priority", and "from left to right ". This question comes from PAT (http://www.patest.cn/contests/mooc-c/06-1).
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