how to calculate subnet

: Because the subnet mask determines the number of network bits and host bits, of course, to see the subnet mask, into the binary system namely: 11111111.11111111.11111000.00000000,There are 21 consecutive 1 that is the network bit 21,host bit =32-21=11Then the number of hosts is (2 of 11 square-2), why should reduce 2, because this string address includes a minimum address and the largest address, respecti

Question: If a company has 100 computers and a class C registered IP address segment: 218.102.142.0, its Intranet (LAN) needs to be further divided into two subnets, each with 40 computers and 60 computers, Requirements: (1) Specify the subnet mask; (2) assume that the IP addresses of one or two computers in the Intranet are 218.102.142.7 and 218.102.142.219. Try to calculate the

There are two ways to compute the subnet mask: Method One: Use the subnet number to calculate: 1. First of all, the number of subnets from the decimal number into binary number; 2. Then, the number of digits of the binary number obtained by the statistic is set to n; 3. Finally, the subnet mask of the address category

This article mainly introduces how to use Python to calculate network segments based on IP addresses and subnet masks. It involves Python character string operation techniques based on the Linux platform and has some reference value, for more information about how to use Python to calculate network segments based on IP addresses and

/* such as: 192.16.1.13 With: 255.255.255.0 Carried,, and counted,, demanded out of it for 192.16.1.0 */ $ip = "192.16.1.13"; Echo get_net ($ip, "255.255.255.0"); function Get_net ($ip, $hide = "255.255.255.255") {$a = Explode (".", $ip);$b = Explode (".", $hide); for ($i =0; $i $r [$i] = (int) $a [$i] (int) $b [$i];return join (".", $r);}?> http://www.bkjia.com/PHPjc/532403.html www.bkjia.com true http://www.bkjia.com/PHPjc/532403.html techarticle PHP/* such as: 192.16.1.13 with: 255.255

actually the starting address of the next subnet. here the network range ends in the previous one, that is, 10.0.31.255. Chart Note that the number of hosts doubles as the subnet size increases by one binary bit. the smallest step represents eight binary bits. The eight binary bits contain a subnet of 256 hosts. However, because you cannot use the first or la

hosts in each subnet = (5 to the power of 2)-2 = 30, the total number of hosts identified by the six subnets will be less than 254. Please note that!Q:1. you may have such questions. For example, in the above example, the binary value of 6 is 110, so why do we need to set the positions corresponding to the first n digits of the host number in the subnet mask to 1, instead of replacing the first n digits wi

power of 2)-2 = 30, the total number of hosts identified by the six subnets will be less than 254. Please note that! Q:1. you may have such questions. For example, in the above example, the binary value of 6 is 110, so why do we need to set the positions corresponding to the first n digits of the host number in the subnet mask to 1, instead of replacing the first n digits with the binary 110 of 6?The answer is: What is the purpose of the

number of hosts identified by the six subnets will be less than 254. Please note that! Q:1. you may have such questions. For example, in the above example, the binary value of 6 is 110, so why do we need to set the positions corresponding to the first n digits of the host number in the subnet mask to 1, instead of replacing the first n digits with the binary 110 of 6?The answer is: What is the purpose of the subn