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In this paper, a complete example of the implementation of C + + to obtain IP, subnet mask, gateway, DNS and other local network parameters of the method for your reference, the specific complete example is as follows:
#pragma comment (lib, "Ws2_32.lib") #include
A few words to master subnet mask, IP address, host number, network number, network address, broadcast address1, 191.172.16.10.33/27 in the/27 that is, the subnet mask is 255.255.255.22
PrefaceThis document is simply a logical algorithm, and how to compute network bits, host bits, and broadcast addresses in the case of known IP addresses and subnet masks. All steps are far from the most primitive binary way, the direct hit principle, please read carefully.1. Logic algorithmLogic and operations and logic or operations are used when computing network bits, host addresses, broadcast addresses
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.
145.189.24.3 10010001 10111101 00011000 00000011
Not much to say, directly on the code.
Package com.ckw.test;
Import Java.io.BufferedReader;
Import java.io.IOException;
Import Java.io.InputStreamReader;
Import java.util.*;
Import Java.util.Map.Entry;
public class Testofsubnetmask {map
The results are:
---------------------------------------------------------------Windows IP Configuration host name ............. : DADI primary DNS suffix ........... : node type ............: mixed
/** * Get broadcast address * */public static String getbroadcastaddress (string subnet, string IP) {string[] ips = ip.split ("\ \."); string[] subnets = subnet.split ("\ \"); StringBuffer sb = new StringBuffer (), for (int i = 0; i Get the Java implementation of the broadcast address based on the
QT5 obtains the local IP address, computer name, network connection name, MAC address, subnet mask, and broadcast address.Get Host Name
/** Name: get_localmachine_name * function: get the name of the Local Machine * parameter: no * returned: QString */QString CafesClient: ge
255.255.255.255: Broadcast address. IP address 0.0.0.0: Represents any network. The host bit is all 1: Represents the broadcast address of the network segment, that is, all the hosts of the network segment. The host bit is all 0: represents the network address of the networ
: 000000000.oC: 255.255.255.0
You can use a subnet mask to determine the network number and host number of an IP address. You can use the IP address and the corresponding subnet
me with the analysis!
Saidi network IT technology community moderator "Sebei" opened the answer for the netizen harcsbg.
For question 1, the simple question is complicated by you. Why do we need to use a subnet mask to divide network segments? If it is 255.255.255.0, it means that 254 hosts can access the internet. If you change it to 255.255.255.192, it means that only 62 hosts belong to the same network
The Ip2long IP address is converted to an integer type.Long2ip integer data is converted to IP. The subnet mask is converted to a mask length mode:$slash _notation = strlen (Preg_replace ("/0/", "", Decbin (Ip2long ($
The subnet mask is used to determine whether the IP addresses of any two computers belong to the same subnetwork.
The simplest understanding is that after the IP address and subnet mask
represents the different hosts within the network segmentAttention:Private IP is an IP address that everyone can access for use in the intranet.Let's explain what a subnet mask is, why put this concept with an IP
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
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