how to calculate subnet mask from ip address with example

The subnet mask cannot exist alone, it must be used in conjunction with an IP address. The subnet mask has only one function, which is to divide an IP

is a private address and cannot be applied directly in the Internet. The Internet must be converted to a public address.I. Why do I need to calculate the network address?In a word, computers in the network can communicate with each other. first, let's look at the simplest network. Figure 3 uses a network cable (crossover line) to directly connect the two compute

network of no more than 254 computers, the use of "255.255.255.0" as a subnet mask, and now most of the local area network will not exceed this number, so "255.255.255.0" is the most commonly used IP address subnet mask , I see t

packets will be handed over to the default gateway for processing, this will inevitably increase the burden on the default gateway, resulting in reduced network efficiency. Therefore, the subnet mask should be set based on the network size. If a network has no more than 254 computers, you can use "255.255.255.0" as the subnet

the example we cited above, the same as the North Street tenants because the street names are North Street, and their respective number, so they can find each other.Computing Network address is to determine the network in the computer is not the same network, in can pass, not on theNote that this is not the same network that is referring to the IP

need to compute the subnet mask and allocate the corresponding host block, although using the binary calculation can draw the corresponding conclusion, but it is more convenient to calculate the decimal method. After long-term practice and experience accumulation, the author sums up the subnet

class C is not enough, it must be Class B ), however, the default subnet mask of Class B is 255.0.0, which can accommodate 60 thousand computers. Obviously, this is not suitable. How many subnet masks are suitable? Let's first list a formula.2 to the power of M = 560First, we confirm that 2 must be greater than the power of 8, because we know that the power of 2

I don't need to analyze it professionally. I use dummies to answer questions. This is a simulated question. Use this question as an example. URL type: Of course, it is Class B. Convert the IP address and subnet mask to binary, and then perform operations on them. 145.1

bits and 1 are the same, the IP address belongs to the same network segment, the one after the 24-bit path changes randomly and belongs to the same network segment. In this example, the IP address (a) 188.188.0.111 is in the range of 188.188.0.0 ~ 188.188.1.255, which belon