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decimal format.For example, 255.0.0.0 or 255.255.255.255.1282. Add a "/" symbol and a number ranging from 1 to 32 after the IP address. The number 1 to 32 indicates the length of the network identification bit in the subnet mask.For example, the subnet mask of 192.168.1.1/2

connection, and the second two 1 in the addition refer to the network address and broadcast address respectively. Because 13 is less than 16 (16 is equal to the 4 power of 2), the host space is 4 bits. While256-16 = 240Therefore, the subnet mask is 255.255.255.255.255.240.If a sub

binary.In 1.172.16.10.33/27,/27 indicates that the subnet mask is too large, that is, 27 All 12. according to the subnet mask 255.255.255.252, the network bit is 30 bits. Therefore, only the remaining two bits are used as the master bits, the network address is used for all

computer number. If the IP address is represented by a binary, the Class A IP address consists of a 1-byte network address and a 3-byte host address, and the highest bit of the network addres

change within the range of 255, so 256 IP addresses can be provided. However, the actual number of available IP addresses is 256-2, that is, 254, because the host number cannot be "0" or all "1 ". 2. The subnet mask is a network of "255.255.0.0". The two numbers can be 0 ~

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" and the subnet mask as "255.255.255.0". Among them, "1" has 24, representing the corresponding IP address to the left 24 bits is the network number; "0" has 8, representing the corresponding IP address to the right of the 8-bit

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

, that subnet mask set how much appropriate? Let's set out a formula first.2 m-Time Square =560First, we determine that 2 must be greater than 8 square, because we know that 2 of 8 is 256, that is, the number of Class C IP maximum capacity of the computer, we from 9 times a trial 2 9 is 512, less than 560, 2 10 is 1024, it seems 2 of the most suitable. The

The subnet address and broadcast address are not given directly because the condition is given precedence. However, these two parameters require that we use the IP address and subnet mask

address of a network to another network. For example, network A and network B, network A's IP address range is "192.168.1.1~192." 168.1.254 ", the subnet mask is 255.255.255.0; The IP

address range is "192.168.1.1~192." 168.1.254 ", the subnet mask is 255.255.255.0; The IP address range for Network B is" 192.168.2.1~192.168.2.254 "and the

### Discusses the relationship between IPaddress and subnetmask and the meaning of Gateway and DNS

Internet network, a gateway is an intermediary device that connects an intranet to other networks on the Internet, also known as a "router." The gateway address is a channel address that can be understood as the transmission of Intranet and Internet network information. According to different classification standards, there are many kinds of gateways. The gateway in the TCP/

? A gateway is essentially an IP address from a network to another network. For example, if Network A and Network B exist, the IP address range of Network A is "192.168.1.1 ~ 192. 168.1.254 ", The subnet

#提取IP地址和子网掩码 [[email protected]~]#ifconfigeth0|grep 'inet Addr'|awk-F'[ :]+' '{print \$4 "/" \$8}'192.168.16.110/255.255.255.0[[Email protected]~]# #查外网IP地址 [[email protected]~]# curl-s Ipecho.net/plain;Echo114.93.99.39#查外网ip地址是什么宽带114.93.99.39IP:114.93.99.39from: Shanghai Telecom [[email protected]~]##输出IP地址是绿色的, the

Turn from: http://hi.baidu.com/ww2000e/item/98f7b9f6d396d5b430c1994f First of all, we look at a CCNA test common problem: The IP address of a host is 202.112.14.137, the mask is 255.255.255.224, requires computing the network address and broadcast address of the host networ

third segment of the IP address should be divided into three different numbers, that is, set ** in 000000 ** to three numbers. You can only enter 1 and 0, and the numbers are different each time. As for what to fill in, it will be convenient, such as 00000011, convert it to binary, which is 1, 2, 3, so that the third segment is also determined. In this way, you can divide the

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

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