{"id":2111,"date":"2020-04-14T10:35:01","date_gmt":"2020-04-14T01:35:01","guid":{"rendered":"https:\/\/www.seraku.co.jp\/tectec-note\/?p=2111"},"modified":"2022-08-01T15:22:08","modified_gmt":"2022-08-01T06:22:08","slug":"physical-layer","status":"publish","type":"post","link":"https:\/\/www.seraku.co.jp\/tectec-note\/industry\/physical-layer\/","title":{"rendered":"OSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u7269\u7406\u5c64\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3067\u306f\u3001\u968e\u5c64\u304c7\u968e\u5c64\u306b\u7d30\u5206\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e7\u968e\u5c64\u306e\u4e2d\u3067\u7269\u7406\u5c64\u306e\u5f79\u5272\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7269\u7406\u5c64\u3068\u306f<\/h2>\n\n\n\n<p>\u7269\u7406\u5c64\u306f\u3001OSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u30ec\u30a4\u30e41\uff08L1\uff09\u306e\u898f\u683c\u3067\u3059\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306a\u3069\u304c\u901a\u4fe1\u3092\u884c\u3046\u969b\u306e\u5909\u63db\u3059\u308b\u65b9\u5f0f\u3084\u96fb\u6c17\u7684\u306a\u4fe1\u53f7\u306b\u5909\u63db\u3057\u305f\u308a\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u7279\u6027\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3059\u308b\u70ba\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u3064\u3044\u3066\u306e\u7269\u7406\u7684\u306a\u4ed5\u69d8\u3092\u898f\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"point\">\n<li class=\"pointtitle\">CHECK\u30dd\u30a4\u30f3\u30c8<\/li>\n<div class=\"pointbg\">\n<li class=\"pointitems\">\u30c7\u30fc\u30bf\u3092\u6570\u5b57\u306e\u300c\uff10\u300d\u300c\uff11\u300d\u3067\u3042\u308b\u30d3\u30c3\u30c8\u5217\u306b\u5909\u63db\u3057\u3066\u3044\u308b\u3002<\/li>\n<li class=\"pointitems\">\u30d3\u30c3\u30c8\u5217\u3092\u96fb\u6c17\u4fe1\u53f7\u306b\u5909\u63db\u3057\u3066\u9001\u4fe1\u3057\u3066\u3044\u308b\u3002<\/li>\n<\/div>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/bf945890d59d126243cbc4b37827bc67.jpg\" alt=\"\u7269\u7406\u5c64\u3068\u306f\" class=\"wp-image-2112\" style=\"width:100%;\"><figcaption class=\"figcap\"><div class=\"figcaptext\">\u56f3\u306e\u3088\u3046\u306b\u3001\u7269\u7406\u5c64\u3067\u306f\u300c\uff10\u300d\u3068\u300c\uff11\u300d\u306e\u30d3\u30c3\u30c8\u5217\u3092\u96fb\u6c17\u4fe1\u53f7\u306b\u5909\u63db\u3057\u3066\u9001\u4fe1\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u53d7\u4fe1\u3057\u305f\u5074\u3067\u306f\u96fb\u6c17\u4fe1\u53f7\u3092\u30d3\u30c3\u30c8\u5217\u306b\u5909\u63db\u3057\u3066\u3044\u307e\u3059\u3002<\/div><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" style=\"display:block; width:100%;\"><img decoding=\"async\" loading=\"lazy\" width=\"1200\" height=\"480\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/phisycal-layer_img_01.jpg\" alt=\"\" class=\"wp-image-2113\" srcset=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/phisycal-layer_img_01.jpg 1200w, https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/phisycal-layer_img_01-768x307.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"figcap\"><div class=\"figcaptext\">\u56f3\u306e\u3088\u3046\u306b\u3001\u30c7\u30fc\u30bf\u304c\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u969b\u306b\u96fb\u6c17\u4fe1\u53f7\u306b\u306a\u308a\u30b1\u30fc\u30d6\u30eb\u306b\u4f1d\u3063\u3066\u30ea\u30d4\u30fc\u30bf\u30cf\u30d6\u306b\u3092\u7d4c\u7531\u3057\u66f4\u306b\u9060\u304f\u306e\u53d7\u4fe1\u3059\u308b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3078\u5230\u9054\u3057\u307e\u3059\u3002<\/div><\/figcaption><\/figure>\n\n\n\n<p>\u3053\u306e\u56f3\u306e\u7269\u7406\u5c64\u306f\u3069\u3053\u304b\u3068\u3044\u3046\u3068\u3059\u3079\u3066\u7269\u7406\u5c64\u3068\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u30d3\u30c3\u30c8\u5217\u3092\u96fb\u6c17\u4fe1\u53f7\u306b\u3001\u30b1\u30fc\u30d6\u30eb\u306f\u96fb\u6c17\u4fe1\u53f7\u3092\u904b\u3073\u307e\u3059\u3002\u30ea\u30d4\u30fc\u30bf\u30cf\u30d6\u306f\u3001\u30c7\u30fc\u30bf\u3092\u4e2d\u7d99\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30c7\u30fc\u30bf\u3092\u66f4\u306b\u9060\u304f\u3078\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7269\u7406\u5c64\u306e\u4e3b\u306a\u5f79\u5272<\/h3>\n\n\n\n<p>\u7269\u7406\u5c64\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u901a\u4fe1\u3092\u304a\u3053\u306a\u3046\u969b\u306e\u30b1\u30fc\u30d6\u30eb\u306e\u7a2e\u985e\u3001\u30b3\u30cd\u30af\u30bf\u5f62\u72b6\u306a\u3069\u306e\u7269\u7406\u7684\u306a\u8981\u4ef6<\/h4>\n\n\n\n<p>\u901a\u4fe1\u3092\u884c\u3046\u70ba\u306b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u30b1\u30fc\u30d6\u30eb\u3092\u3064\u306a\u3052\u305f\u308a\u3001\u7121\u7dda\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30b1\u30fc\u30d6\u30eb\u306e\u7a2e\u985e\u3068\u3057\u3066\u306f\u3001UTP\uff08Unshield Twist Pair\uff09\u30b1\u30fc\u30d6\u30eb\u3084\u5149\u30b1\u30fc\u30d6\u30eb\u3001\u540c\u8ef8\u30b1\u30fc\u30d6\u30eb\u3001STP\uff08Shield Twist Pair\uff09\u30b1\u30fc\u30d6\u30eb\u306a\u3069\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"1200\" height=\"1060\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/phisycal-layer_img_03.jpg\" alt=\"\u901a\u4fe1\u3092\u304a\u3053\u306a\u3046\u969b\u306e\u30b1\u30fc\u30d6\u30eb\u306e\u7a2e\u985e\u3001\u30b3\u30cd\u30af\u30bf\u5f62\u72b6\u306a\u3069\u306e\u7269\u7406\u7684\u306a\u8981\u4ef6\" class=\"wp-image-2125\" srcset=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/phisycal-layer_img_03.jpg 1200w, https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/phisycal-layer_img_03-768x678.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption>\u5404\u7a2e\u30b1\u30fc\u30d6\u30eb\u306e\u7a2e\u985e<\/figcaption><\/figure>\n\n\n\n\n\n\n<h4 class=\"wp-block-heading\">\u96fb\u6c17\u3084\u5149\u3067\u306e\u30d3\u30c3\u30c8\u8ee2\u9001\u3092\u884c\u3046\u969b\u306e\u30ce\u30a4\u30ba\u306e\u57fa\u6e96\u5024\u306a\u3069\u3092\u5b9a\u7fa9<\/h4>\n\n\n\n<p>\u3084\u308a\u53d6\u308a\u3092\u3059\u308b\u30c7\u30fc\u30bf\u306f\u201d0\u201d\u3068\u201d1\u201d\u306e\u6570\u5b57\u304b\u3089\u306a\u308b\u30d3\u30c3\u30c8\u5217\u3067\u51e6\u7406\u3092\u884c\u3044\u3001\u201c\u4fe1\u53f7\u201d\u3068\u3057\u3066\u9001\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u4ed6\u306b\u3082\u30b1\u30fc\u30d6\u30eb\u306e\u7a2e\u985e\u3001\u30b3\u30cd\u30af\u30bf\u306e\u5f62\u72b6\u3001\u30c7\u30fc\u30bf\u3068\u96fb\u6c17\u4fe1\u53f7\u306e\u5909\u63db\u65b9\u5f0f\u306a\u3069\u306e\u7269\u7406\u7684\u306a\u4ed5\u69d8\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u7269\u7406\u5c64\u306e\u307f\u3067\u5b9a\u7fa9\u3055\u308c\u308b\u3053\u3068\u306f\u5c11\u306a\u304f\u3001\u901a\u5e38\u306f\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3068\u5408\u308f\u305b\u3066\u5b9a\u7fa9\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7269\u7406\u5c64\u306ePDU\uff08protocol data unit\uff09\u306f\u3001\u30d3\u30c3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"943\" height=\"115\" src=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/physical-layer_img_04.jpg\" alt=\"\u96fb\u6c17\u3084\u5149\u3067\u306e\u30d3\u30c3\u30c8\u8ee2\u9001\u3092\u884c\u3046\u969b\u306e\u30ce\u30a4\u30ba\u306e\u57fa\u6e96\u5024\u306a\u3069\u3092\u5b9a\u7fa9\" class=\"wp-image-2126\" srcset=\"https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/physical-layer_img_04.jpg 943w, https:\/\/www.seraku.co.jp\/tectec-note\/wp-content\/uploads\/physical-layer_img_04-768x94.jpg 768w\" sizes=\"(max-width: 943px) 100vw, 943px\" \/><figcaption>\u56f3\u306e\u3088\u3046\u306b\u3001\u96fb\u6c17\u4fe1\u53f7\u3092\u53d7\u4fe1\u3057\u305f\u3089\u96fb\u6c17\u4fe1\u53f7\u304b\u3089\u30d3\u30c3\u30c8\u5217\u3078\u5909\u63db\u3057\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u901a\u4fe1\u5a92\u4f53\u306e\u7a2e\u985e<\/h3>\n\n\n\n<p>\u901a\u4fe1\u5a92\u4f53\uff08\u6a5f\u5668\u9593\u3092\u3064\u306a\u3050\u30b1\u30fc\u30d6\u30eb\u306a\u3069\u306e\u3053\u3068\uff09\u306b\u3082\u69d8\u3005\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u5927\u304d\u304f\u5206\u985e\u3055\u308c\u308b3\u3064\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u30b1\u30fc\u30d6\u30eb<\/h4>\n\n\n\n<p>\u5149\u306f\u3001\u5168\u53cd\u5c04\u3068\u3044\u3046\u73fe\u8c61\u3092\u5229\u7528\u3057\u3066\u9001\u4fe1\u5148\u306b\u4f1d\u3048\u307e\u3059\u3002\u30ce\u30a4\u30ba\u306a\u3069\u306e\u5f71\u97ff\u3092\u53d7\u3051\u306b\u304f\u3044\u70ba\u3001\u6570\u30ad\u30ed\u3068\u3044\u3046\u9577\u8ddd\u96e2\u4f1d\u9001\u3082\u53ef\u80fd\u3067\u3059\u3002\u5024\u6bb5\u3082\u9ad8\u304f\u3001\u30ac\u30e9\u30b9\u306e\u7e4a\u7dad\u3067\u3067\u304d\u3066\u3044\u308b\u305f\u3081\u65bd\u5de5\u6642\u306e\u53d6\u308a\u6271\u3044\u304c\u96e3\u3057\u3044\u3068\u3044\u3046\u6b20\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u91d1\u5c5e\u30b1\u30fc\u30d6\u30eb<\/h4>\n\n\n\n<p>\u4e3b\u306b\u96fb\u5727\u306a\u3069\u306e\u5909\u5316\u3092\u5229\u7528\u3057\u3066\u4fe1\u53f7\u3092\u9001\u4fe1\u5148\u306b\u4f1d\u3048\u307e\u3059\u3002\u5468\u56f2\u306e\u74b0\u5883\u3084\u6750\u8cea\u306a\u3069\u306e\u5f71\u97ff\u306b\u3088\u308a\u6ce2\u5f62\u304c\u3086\u304c\u307f\u3084\u3059\u3044\u305f\u3081\u3001\u9577\u8ddd\u96e2\u306e\u4f1d\u9001\u306b\u306f\u201c\u30ea\u30d4\u30fc\u30bf\u201d\u3068\u547c\u3070\u308c\u308b\u4fe1\u53f7\u3092\u5897\u5e45\u3055\u305b\u308b\u6a5f\u5668\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 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