知道IP地址和子网掩码求IP的网络号和子网号和主机号 知道IP地址和子网掩码怎么求主机号和网络地址
\u77e5\u9053IP\u5730\u5740\u548c\u5b50\u7f51\u63a9\u7801\u6c42IP\u7684\u7f51\u7edc\u53f7\u548c\u5b50\u7f51\u53f7\u548c\u4e3b\u673a\u53f7\u5728\u7b97\u8fd9\u6837\u7684\u9898\u76ee\u4e4b\u524d\uff0c\u5efa\u8bae\u4f60\u597d\u597d\u7406\u89e3\u4e00\u4e0b\uff0c\u8ba1\u7b97\u673a\u91cc \u201c\u903b\u8f91\u201d\u6df7\u7b97\u5173\u7cfb
\u4e0e
\u6216
\u975e
\u7b49\u7b49,\u5f53\u7136\u8fdb\u5236\u4e4b\u95f4\u7684\u8f6c\u6362\u4f60\u4e5f\u5f97\u77e5\u9053\uff0c \u5341\u8fdb\u5236\u3001\u4e8c\u8fdb\u5236\u4e4b\u95f4\u7684\u8f6c\u6362
1100 0000.1010 1000.0001 0100.0001 1001 (192.168.20.25)
1111 1111.1111 1111.1111 1111.1111 0000 (255.255.255.240)
----------------------------------------\u76f8\u3010\u4e0e\u3011\uff0c\u4f60\u53ef\u4ee5\u7406\u89e3\u6210\u76f8\u4e58
1100 0000.1010 1000.0001 0100.0001 0000 \u5f97\u5230 192.168.20.16
\u5373192.168.20.25/28 \u7684\u7f51\u7edc\u53f7/\u7f51\u6bb5\u4e3a\uff1a 192.168.20.16\uff08\u5b50\u7f51\u53f7\uff09
\u4e3b\u673a\u53f7\u4ece 192.168.20.17\u5f00\u59cb
\u5230 192.168.20.30\u7ed3\u675f\uff0c
\u5176\u4e2d192.168.20.31\u662f\u8fd9\u4e2a\u7f51\u6bb5\u7684\u5e7f\u64ad\u5730\u5740\u3002
\u5176\u5b9e\uff0c\u5982\u679c\u4f60\u591f\u719f\u7ec3\u7684\u8bdd\uff0c\u4e00\u773c\u5c31\u53ef\u4ee5\u770b\u51fa\u4e0a\u9762IP\u5730\u5740\u548c\u5b50\u7f51\u63a9\u7801\u4e0b\u7684\u5404\u79cd\u5173\u7cfb
\u7528256-240=16 16\u5c31\u662f\u8fd9\u4e2a\u5b50\u7f51\u63a9\u7801\u4e0b \u5b50\u7f51\u6bb5
0\uff1a\u662f\u7b2c\u4e00\u4e2a\u7f51\u6bb5\uff0c\u301015\u662f\u5e7f\u64ad\u5730\u5740\u3011
16\uff1a\u662f\u7b2c\u4e8c\u4e2a\u7f51\u6bb5\uff0c\u301031\u662f\u5e7f\u64ad\u5730\u5740\u3011
32\uff1a\u7b2c\u4e09\u4e2a\u7f51\u6bb5\uff0c\u301047\u662f\u5e7f\u64ad\u5730\u5740\u3011
\u4f9d\u6b21\u7c7b\u63a8\u3002\u3002\u3002\u3002
\u660e\u767d\u4e86\u5417\uff1f
IP\u5730\u5740\u4e3a124.196.27.59\uff0c\u537301111100.11000100.00011011.00111011
\u5b50\u7f51\u63a9\u7801\u4e3a\uff1a255.244.0.0\uff0c\u537311111111.11110100.00000000.00000000
IP\u5730\u5740\u4e0e\u5b50\u7f51\u63a9\u7801\u505a\u4e0e\u8fd0\u7b97\uff0c\u537301111100.11000100.00000000.00000000
IP\u7684\u7f51\u7edc\u5730\u5740124.196.0.0
\u5b50\u7f51\u63a9\u7801\u53d6\u53cd(00000000.00001011.11111111.11111111 )\uff0c\u518d\u548cIP\u505a\u4e0e\u8fd0\u7b97\uff0c\u537300000000.00000000.00011011.00111011
\u4e3b\u673a\u53f7\u5c31\u662f0.0.27.59
\u6269\u5c55\u8d44\u6599\uff1a
IP\u5730\u5740\u5305\u542b\u7f51\u7edc\u53f7\u548c\u4e3b\u673a\u53f7\uff0c\u5e76\u4e14\u8fd9\u79cd\u7ec4\u5408\u662f\u552f\u4e00\u7684\u3002\u539f\u5219\u4e0a\uff0cInternet\u4e0a\u7684\u4efb\u4f55\u4e24\u53f0\u673a\u5668\u4e0d\u4f1a\u6709\u76f8\u540c\u7684IP\u5730\u5740\u3002\u6240\u6709\u7684IP\u5730\u5740\u90fd\u662f32\u4f4d\u957f\uff0c\u88ab\u7528\u4e8eIP\u5206\u7ec4\u7684\u6e90\u5730\u5740\u548c\u76ee\u7684\u5730\u5740\u57df\u3002
IP\u5730\u5740\u662f\u4e00\u79cd\u5206\u7b49\u7ea7\u7684\u5730\u5740\u7ed3\u6784\uff0c\u5206\u4e3aA\u3001B\u3001C\u3001D\u3001E\u4e94\u7c7b\uff0c\u63cf\u8ff0\u5982\u4e0b\uff1a
A\u7c7b\u5730\u5740\u7684\u7b2c\u4e00\u4f4d\u603b\u662f0\uff0c8\u4f4d\u5206\u914d\u7ed9\u7f51\u7edc\u53f7\uff0c24\u4f4d\u5206\u914d\u7ed9\u4e3b\u673a\u53f7\u3002
B\u7c7b\u5730\u5740\u7684\u524d\u4e24\u4f4d\u603b\u662f10\uff0c16\u4f4d\u5206\u914d\u7ed9\u7f51\u7edc\u53f7\uff0c16\u4f4d\u5206\u914d\u7ed9\u4e3b\u673a\u53f7\u3002
C\u7c7b\u5730\u5740\u7684\u524d\u4e09\u4f4d\u603b\u662f110\uff0c24\u4f4d\u5206\u914d\u7ed9\u7f51\u7edc\u53f7\uff0c8\u4f4d\u5206\u914d\u7ed9\u4e3b\u673a\u53f7\u3002
D\u7c7b\u5730\u5740\u7684\u524d\u56db\u4f4d\u603b\u662f1110\u3002
E\u7c7b\u5730\u5740\u7684\u524d\u4e94\u4f4d\u603b\u662f11110\u3002
\u4f5c\u4e3a\u540c\u4e00\u4e2a\u7f51\u7edc\u7684\u7f51\u7edc\u5730\u5740\u5fc5\u987b\u662f\u76f8\u540c\u7684\uff0c\u4f46\u662f\u4f5c\u4e3a\u540c\u4e00\u4e2a\u7f51\u7edc\u7684\u4e3b\u673a\u5730\u5740\u5fc5\u987b\u662f\u4e0d\u540c\u7684\uff0c\u5728\u540c\u4e00\u4e2a\u7f51\u7edc\u4e2d\u7684\u4e3b\u673a\u624d\u80fd\u591f\u76f4\u63a5\u8fdb\u884c\u901a\u4fe1\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u7684\u7f51\u7edc\u79f0\u4e3a\u5e73\u9762\u7f51\u7edc\u3002
\u6bd4\u5982\uff1a192.168.1.1/24\uff0c\u548c 192.168.1.2/24\uff0c\u7f51\u7edc ID\u4e00\u6837\uff0c\u4e3b\u673a ID\u4e0d\u540c\u3002\u5982\u4e0d\u662f\u540c\u4e00\u4e2a\u7f51\u7edc\u7684\u4e3b\u673a\u4e4b\u95f4\u901a\u4fe1\u5fc5\u987b\u901a\u8fc7\u8bbe\u5907\u5bf9\u6570\u636e\u8fdb\u884c\u8f6c\u53d1\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u7684\u7f51\u7edc\u79f0\u4e3a\u5c42\u6b21\u7f51\u7edc\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u2014\u7f51\u7edc\u53f7
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u2014\u4e3b\u673a\u5730\u5740
这应该够明白了吧！
其实这个很简单，也就是把后面1个字节中8位中分了四个子网位以及四个主机位，即00011001
256-240=16
所以网段划分如下0-15 16-31 32-47...........
25属于第二个
所以网络号192.168.20.16 主机从17-30 192.168.20.31是广播地址。
绛旓細涓句緥192.168.1.1杩涜鍒嗘瀽銆傦紙IP鍦板潃鏁伴噺涓2鐨19娆℃柟鍑2锛屽彲鐢ㄥ湴鍧鑼冨洿鏄10.64.0.1鑷10.71.255.254锛夎绠楀涓嬶細IP 192.168.1.1锛屽瓙缃 255.255.255.0銆傚崄杩涘埗255鎹㈠仛浜岃繘鍒跺氨鏄1111 1111鍏釜1锛屽崄杩涘埗192鎹㈡垚浜岃繘鍒舵槸1100 0000銆傛妸IP鍜屽瓙缃戞帺鐮鍏ㄦ崲鎴愪簩杩涘埗锛屽姣斿涓嬶細IP锛1100 0000 ...
绛旓細IP锛195.169.20.50瀛愮綉鎺╃爜锛255.255.255.224鎺╃爜涓1鐨勪釜鏁拌〃绀虹綉缁滃瓧娈典綅鏁0鐨勪釜鏁拌〃绀轰富鏈哄瓧娈典綅鏁帮紝255鍏ㄦ槸1锛224鍙樹负浜岃繘鍒11100000锛屾墍浠ョ鍥涗釜瀛楄妭鍓嶄笁涓瘮鐗瑰睘浜庣綉缁滃瓧娈碉紝鍚庝簲涓瘮鐗瑰睘浜庝富鏈哄瓧娈点傜綉缁滃彿灏辨槸缃戠粶瀛楁涓嶅彉涓绘満瀛楁鍏ㄢ0鈥濈鍥涗釜瀛楄妭50鍙樹负浜岃繘鍒00110010锛屽墠涓変釜涓嶅彉锛屽悗浜...
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绛旓細缃戠粶鍙蜂负锛192.168.10.0銆傝绠楄繃绋嬶細鎷IP鍦板潃192.168.10.2涓庡瓙缃戞帺鐮255.255.255.0鐩镐笌寰楀埌缃戠粶鍙蜂负192.168.10.0銆傚箍鎾彿涓猴細192.168.10.255銆傚箍鎾彿涓虹綉缁滃彿骞朵笖涓绘満鍙峰叏涓1锛屽垯涓鸿缃戠粶鐨勫箍鎾彿锛屾墍浠ュ箍鎾彿涓192.168.10.255銆傛湁鏁堜富鏈鐨処P鑼冨洿锛192.168.10.1~192.168.10.254銆
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绛旓細1銆侀鍏堝皢缃戠粶鐨処P鍦板潃鍜屽瓙缃戞帺鐮閮借浆鎹㈡垚32浣嶄簩杩涘埗瀛楃銆2銆佸皢杞崲鍚庣殑浜岃繘鍒剁殑IP鍦板潃鍜屽瓙缃戞帺鐮佽繘琛屸滈昏緫涓庘濊繍绠楋紝寰楀埌鏂扮殑32浣嶄簩杩涘埗瀛楃銆3銆佹妸寰楀埌鐨勬柊鐨32浣嶄簩杩涘埗瀛楃杞崲鎴愬崄杩涘埗锛屽氨鏄富鏈虹殑缃戠粶鍙蜂簡銆備緥濡傦細鏈満IP涓192.168.1.16锛屽瓙缃戞帺鐮佷负255.255.255.0 杞崲鎴愪簩杩涘埗锛氭湰鏈...
绛旓細C绫诲湴鍧锛屽垝鍒嗕簡4涓瓙缃戯紝鈶犵綉缁滃湴鍧锛192.151.60.0锛涒憽鑼冨洿锛192.151.60.0~192.151.60.63锛涒憿骞挎挱鍦板潃锛192.151.60.63锛涒懀DNS鍦板潃锛氫富瑕佺敤浜庡煙鍚涓嶪P鍦板潃鐨鐩镐簰杞崲銆瀛愮綉鎺╃爜鏄竴涓32浣嶅湴鍧锛岀敤浜庡睆钄絀P鍦板潃鐨勪竴閮ㄥ垎浠ュ尯鍒綉缁滄爣璇嗗拰涓绘満鏍囪瘑锛屽苟璇存槑璇P鍦板潃鏄湪灞鍩熺綉涓婏紝杩樻槸鍦ㄥ箍鍩熺綉...
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绛旓細鍐嶅噺2灏辨槸鍙敤IP鍦板潃涓暟銆傦紙棣栧熬2涓狪P鍦板潃涓嶅彲鐢級瀵逛簬瀛愮綉鎺╃爜鏈鍚庝竴鑺備负0鐨勫瓙缃戞潵璇达紝256鍑忓幓瀛愮綉鎺╃爜鐨绗笁鑺傜殑鏁板瓧锛屽啀涔樹互256灏辨槸鍦板潃鍧楀ぇ灏忥紝鍐嶅噺鍘2灏辨槸鍙敤IP鍦板潃涓暟銆備緥濡傦紝瀛愮綉鎺╃爜255.255.248.0锛屽湴鍧鍧楀ぇ灏忎负锛256-248锛塜256=2048锛屽彲鐢↖P鍦板潃鏁伴噺涓2046銆
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