{"id":476323,"date":"2023-08-09T07:28:31","date_gmt":"2023-08-09T07:28:31","guid":{"rendered":""},"modified":"2023-09-05T11:12:28","modified_gmt":"2023-09-05T11:12:28","slug":"collision","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/collision\/","title":{"rendered":"\u885d\u7a81"},"content":{"rendered":"<p>\u885d\u7a81\u306f\u3001\u7269\u7406\u5b66\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30b5\u30a4\u30a8\u30f3\u30b9\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5206\u91ce\u3067\u306f\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u4e00\u822c\u7684\u306b\u306f\u30012 \u3064\u4ee5\u4e0a\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u540c\u6642\u306b\u540c\u3058\u30b9\u30da\u30fc\u30b9\u3092\u5360\u6709\u3057\u3088\u3046\u3068\u3059\u308b\u72b6\u6cc1\u3092\u6307\u3057\u307e\u3059\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u7279\u306b\u30d7\u30ed\u30ad\u30b7 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\u885d\u7a81\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u306e\u3088\u3046\u306a\u5171\u6709\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30e1\u30c7\u30a3\u30a2\u3067\u306f\u3001\u8907\u6570\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u540c\u6642\u306b\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u30d1\u30b1\u30c3\u30c8\u304c\u4e92\u3044\u306b\u5e72\u6e09\u3057\u3001\u885d\u7a81\u304c\u767a\u751f\u3057\u307e\u3059\u3002CSMA\/CD 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\u30b9\u30a4\u30c3\u30c1\u3084\u30eb\u30fc\u30bf\u30fc\u306a\u3069\u306e\u6700\u65b0\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u8907\u6570\u306e\u885d\u7a81\u30c9\u30e1\u30a4\u30f3\u306b\u5206\u5272\u3057\u3066\u3001\u885d\u7a81\u306e\u6f5c\u5728\u7684\u306a\u5f71\u97ff\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u885d\u7a81\u306e\u7a2e\u985e<\/h2>\n<ol>\n<li>\n<p><strong>\u7af6\u5408\u30d9\u30fc\u30b9\u306e\u885d\u7a81<\/strong>: \u3053\u308c\u3089\u306f\u3001\u5171\u6709\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067 2 \u3064\u4ee5\u4e0a\u306e\u30ce\u30fc\u30c9\u304c\u540c\u6642\u306b\u9001\u4fe1\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u304d\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u30ef\u30a4\u30e4\u30ec\u30b9 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u53cd\u5c04\u30d9\u30fc\u30b9\u306e\u885d\u7a81<\/strong>\u3053\u308c\u3089\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u4e0d\u6574\u5408\u306b\u3088\u3063\u3066\u767a\u751f\u3057\u3001\u4fe1\u53f7\u304c\u53cd\u5c04\u3057\u3066\u5f8c\u7d9a\u306e\u4fe1\u53f7\u3068\u885d\u7a81\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u539f\u56e0<\/th>\n<th>\u5171\u901a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7af6\u5408\u30d9\u30fc\u30b9<\/td>\n<td>\u540c\u6642\u9001\u4fe1<\/td>\n<td>\u30ef\u30a4\u30e4\u30ec\u30b9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/td>\n<\/tr>\n<tr>\n<td>\u53cd\u5c04\u30d9\u30fc\u30b9<\/td>\n<td>\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u4e0d\u6574\u5408<\/td>\n<td>\u6709\u7dda\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u885d\u7a81\u306e\u6d3b\u7528\uff1a\u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/h2>\n<p>\u885d\u7a81\u306f\u3001\u52b9\u7387\u3068\u901f\u5ea6\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u4e00\u822c\u7684\u306b\u554f\u984c\u3068\u898b\u306a\u3055\u308c\u307e\u3059\u304c\u3001\u7279\u306b\u30ef\u30a4\u30e4\u30ec\u30b9 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u5171\u6709\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u672c\u8cea\u7684\u306a\u90e8\u5206\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u6709\u7dda\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7528\u306e CSMA\/CD \u3084\u30ef\u30a4\u30e4\u30ec\u30b9 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7528\u306e CSMA\/CA (Carrier Sense Multiple Access with Collision Avoidance) \u306a\u3069\u3001\u885d\u7a81\u3092\u691c\u51fa\u3057\u3066\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u6570\u591a\u304f\u958b\u767a\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u885d\u7a81\u304c\u983b\u7e41\u306b\u767a\u751f\u3059\u308b\u5834\u5408\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8f3b\u8f33\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u6545\u969c\u3001\u69cb\u6210\u306e\u554f\u984c\u306a\u3069\u306e\u554f\u984c\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u554f\u984c\u306f\u901a\u5e38\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5e2f\u57df\u5e45\u3092\u5897\u3084\u3059\u3001\u6545\u969c\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u3092\u4ea4\u63db\u307e\u305f\u306f\u4fee\u7406\u3059\u308b\u3001\u30b9\u30a4\u30c3\u30c1\u3084\u30eb\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3057\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3088\u308a\u5c0f\u3055\u306a\u885d\u7a81\u30c9\u30e1\u30a4\u30f3\u306b\u5206\u5272\u3059\u308b\u3053\u3068\u3067\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u885d\u7a81\u3068\u95a2\u9023\u7528\u8a9e: \u6bd4\u8f03\u5206\u6790<\/h2>\n<p>\u885d\u7a81\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u4e00\u822c\u7684\u306a\u7528\u8a9e\u3067\u3059\u304c\u3001\u6df7\u4e71\u3092\u62db\u304f\u53ef\u80fd\u6027\u306e\u3042\u308b\u95a2\u9023\u7528\u8a9e\u304c\u4ed6\u306b\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u610f\u5473<\/th>\n<th>\u6bd4\u8f03<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u885d\u7a81<\/td>\n<td>2\u53f0\u4ee5\u4e0a\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u540c\u6642\u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3057\u3001\u5e72\u6e09\u304c\u767a\u751f\u3059\u308b\u5834\u5408<\/td>\n<td>\u885d\u7a81\u306f\u7269\u7406\u5c64\u3067\u767a\u751f\u3057\u3001\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u653e\u9001<\/td>\n<td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u30c7\u30fc\u30bf\u8ee2\u9001\u65b9\u6cd5<\/td>\n<td>\u885d\u7a81\u3068\u306f\u7570\u306a\u308a\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u306f\u610f\u56f3\u7684\u306a\u30c7\u30fc\u30bf\u9001\u4fe1\u5f62\u5f0f\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9<\/td>\n<td>\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u304c\u5b9b\u5148\u306b\u5230\u9054\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408<\/td>\n<td>\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u306f\u885d\u7a81\u306b\u3088\u3063\u3066\u767a\u751f\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6df7\u96d1\u3084\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u6545\u969c\u306a\u3069\u306e\u4ed6\u306e\u8981\u56e0\u306b\u3088\u3063\u3066\u3082\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u5c06\u6765\u306e\u5c55\u671b\uff1a\u885d\u7a81\u3068\u65b0\u8208\u6280\u8853<\/h2>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u304c\u9032\u5316\u3057\u7d9a\u3051\u308b\u4e2d\u3001\u885d\u7a81\u306e\u7ba1\u7406\u306f\u4f9d\u7136\u3068\u3057\u3066\u91cd\u8981\u306a\u7814\u7a76\u5206\u91ce\u3067\u3059\u30024G \u304a\u3088\u3073 5G \u30bb\u30eb\u30e9\u30fc \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u7528\u3055\u308c\u308b\u76f4\u4ea4\u5468\u6ce2\u6570\u5206\u5272\u591a\u91cd (OFDM) \u306a\u3069\u306e\u65b0\u3057\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u3084\u3001WiFi 6 (802.11ax) \u306a\u3069\u306e\u9ad8\u5ea6\u306a\u30ef\u30a4\u30e4\u30ec\u30b9 \u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u7279\u306b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u91cf\u304c\u591a\u3044\u72b6\u6cc1\u3067\u885d\u7a81\u3092\u3088\u308a\u9069\u5207\u306b\u51e6\u7406\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u885d\u7a81\u3068\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6d41\u308c\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u63a5\u7d9a\u8981\u6c42\u3092\u53d7\u3051\u5165\u308c\u3001\u305d\u306e\u8981\u6c42\u3092\u5b9b\u5148\u30b5\u30fc\u30d0\u30fc\u306b\u8ee2\u9001\u3057\u3001\u5143\u306e\u8981\u6c42\u5143\u306b\u30c7\u30fc\u30bf\u3092\u8fd4\u3057\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u7ba1\u7406\u3068\u3044\u3046\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u885d\u7a81\u306e\u7ba1\u7406\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u8981\u6c42\u3068\u5fdc\u7b54\u3092\u7d71\u5408\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u9001\u4fe1\u3055\u308c\u308b\u30d1\u30b1\u30c3\u30c8\u306e\u7dcf\u6570\u3092\u524a\u6e1b\u3057\u3001\u885d\u7a81\u306e\u53ef\u80fd\u6027\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u4e00\u90e8\u306e\u9ad8\u5ea6\u306a\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30b7\u30a7\u30fc\u30d4\u30f3\u30b0\u307e\u305f\u306f\u30b5\u30fc\u30d3\u30b9\u54c1\u8cea (QoS) \u30dd\u30ea\u30b7\u30fc\u3092\u5b9f\u88c5\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u3088\u308a\u9069\u5207\u306b\u7ba1\u7406\u3057\u3001\u885d\u7a81\u306e\u5f71\u97ff\u3092\u8efd\u6e1b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u885d\u7a81\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.amazon.com\/Computer-Networking-Top-Down-Approach-6th\/dp\/0132856204\" target=\"_new\" rel=\"noopener nofollow\">\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff1a\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u30a2\u30d7\u30ed\u30fc\u30c1\uff08\u9ed2\u702c\u30fb\u30ed\u30b9\u8457\uff09<\/a><\/li>\n<li><a href=\"https:\/\/ieeexplore.ieee.org\/document\/5772960\" target=\"_new\" rel=\"noopener nofollow\">IEEE Xplore: \u30ef\u30a4\u30e4\u30ec\u30b9 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308b\u885d\u7a81\u56de\u907f\u306e\u6982\u8981<\/a><\/li>\n<li><a href=\"https:\/\/www.amazon.com\/Network-Guide-Networks-Jill-West\/dp\/133756933X\" target=\"_new\" rel=\"noopener nofollow\">Network+ \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ac\u30a4\u30c9 (Jill West\u3001Tamara Dean\u3001Jean Andrews \u8457)<\/a><\/li>\n<\/ul>","protected":false},"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476323","wiki","type-wiki","status-publish","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Collision: An In-depth Analysis<\/mark>","faq_items":[{"question":"What is a collision in computer networking?","answer":"<p>A collision in computer networking refers to a situation where two or more devices attempt to transmit data simultaneously on a shared network. This can cause interference, resulting in the loss of the original data packets. Collisions are managed by protocols like CSMA\/CD (Carrier Sense Multiple Access with Collision Detection) for wired Ethernet networks and CSMA\/CA (Carrier Sense Multiple Access with Collision Avoidance) for wireless networks.<\/p>"},{"question":"How does a collision affect network performance?","answer":"<p>Collisions can degrade network performance as they cause packet loss, leading to retransmissions and delays. In high-traffic networks, frequent collisions can consume a substantial portion of network bandwidth, reducing overall efficiency.<\/p>"},{"question":"What are contention-based collisions and reflection-based collisions?","answer":"<p>Contention-based collisions occur when two or more nodes attempt to transmit data simultaneously on a shared network, common in wireless networks. Reflection-based collisions happen due to impedance mismatches in a network, causing signals to reflect and collide with subsequent signals in wired networks.<\/p>"},{"question":"How can collisions be managed or reduced?","answer":"<p>Collisions are an inherent part of shared network architectures, but their impact can be managed. Solutions include increasing network bandwidth, repairing or replacing faulty network devices, and segmenting the network into smaller collision domains using switches or routers.<\/p>"},{"question":"How are collisions related to proxy servers?","answer":"<p>Proxy servers act as intermediaries for internet traffic, which can help reduce the total number of packets being sent over a network and lower the likelihood of collisions. Some advanced proxy servers can implement traffic shaping or Quality of Service (QoS) policies to better manage network traffic and mitigate the impact of collisions.<\/p>"},{"question":"What technologies are being developed to handle collisions better?","answer":"<p>As networking technology evolves, newer technologies like Orthogonal Frequency Division Multiplexing (OFDM) and advanced wireless protocols like WiFi 6 (802.11ax) are designed to better handle collisions and improve network performance, especially in high-traffic situations.<\/p>"},{"question":"How can I learn more about collisions in networking?","answer":"<p>For further insights, you can refer to reputable resources such as \"Computer Networking: A Top-Down Approach\" by Kurose and Ross, the IEEE Xplore article on \"Collision Avoidance in Wireless Networks,\" or the book \"Network+ Guide to Networks\" by Jill West, Tamara Dean, and Jean Andrews. These sources provide in-depth information on collisions and related topics in networking.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476323\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=476323"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}