子網(wǎng)掩碼是用來判斷任意兩臺計算機(jī)的IP地址是否屬于同一子網(wǎng)絡(luò)的根據(jù)
運(yùn)算演示之一:
I P 地址 16. 73.129.233
子網(wǎng)掩碼 255.255.128.0
AND運(yùn)算
----------------------------------------------------------
轉(zhuǎn)化為二進(jìn)制進(jìn)行運(yùn)算:
I P 地址 00010000.01001001.10000001.11101001
子網(wǎng)掩碼 11111111.11111111.11111000.00000000
AND運(yùn)算
----------------------------------------------------------
00010000.01001001.10000000.00000000
轉(zhuǎn)化為十進(jìn)制后為:
----------------------------------------------------------
16 . 73 . 128 . 0
運(yùn)算演示之二: I P 地址 16. 73.129.1
子網(wǎng)掩碼 255.255.128.0
AND運(yùn)算
----------------------------------------------------------
轉(zhuǎn)化為二進(jìn)制進(jìn)行運(yùn)算:
I P 地址 00010000.01001001.10000001.0000000
子網(wǎng)掩碼是用來判斷任意兩臺計算機(jī)的IP地址是否屬于同一子網(wǎng)絡(luò)的根據(jù)
運(yùn)算演示之一:
I P 地址 16. 73.129.233
子網(wǎng)掩碼 255.255.128.0
AND運(yùn)算
----------------------------------------------------------
轉(zhuǎn)化為二進(jìn)制進(jìn)行運(yùn)算:
I P 地址 00010000.01001001.10000001.11101001
子網(wǎng)掩碼 11111111.11111111.11111000.00000000
AND運(yùn)算
----------------------------------------------------------
00010000.01001001.10000000.00000000
轉(zhuǎn)化為十進(jìn)制后為:
----------------------------------------------------------
16 . 73 . 128 . 0
運(yùn)算演示之二: I P 地址 16. 73.129.1
子網(wǎng)掩碼 255.255.128.0
AND運(yùn)算
----------------------------------------------------------
轉(zhuǎn)化為二進(jìn)制進(jìn)行運(yùn)算:
I P 地址 00010000.01001001.10000001.00000001
子網(wǎng)掩碼 11111111.11111111.10000000.00000000
AND運(yùn)算
----------------------------------------------------------
00010000.01001001.10000000.00000000
轉(zhuǎn)化為十進(jìn)制后為:
----------------------------------------------------------
16 . 73 . 128 . 0
運(yùn)算演示之三:
I P 地址 16. 73.143.255
子網(wǎng)掩碼 255.255.128.0
AND運(yùn)算
----------------------------------------------------------
轉(zhuǎn)化為二進(jìn)制進(jìn)行運(yùn)算:
I P 地址 00010000.01001001.10001111.11111111
子網(wǎng)掩碼 11111111.11111111.10000000.00000000
AND運(yùn)算
----------------------------------------------------------
00010000.01001001.10000000.00000000
轉(zhuǎn)化為十進(jìn)制后為:
----------------------------------------------------------
16 . 73 . 128 . 0
通過以上對三組計算機(jī)IP地址與子網(wǎng)掩碼的AND運(yùn)算后,我們可以看到
它運(yùn)算結(jié)果是一樣的。均為16.73.128.0
所以計算機(jī)就會把這三臺計算機(jī)視為是同一子網(wǎng)絡(luò),然后進(jìn)行通訊的