{"id":7677,"date":"2024-12-18T20:02:44","date_gmt":"2024-12-18T11:02:44","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=7677"},"modified":"2026-10-04T10:57:46","modified_gmt":"2026-10-04T01:57:46","slug":"802-11-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/802-11-%ec%a0%95%eb%a6%ac\/","title":{"rendered":"802.11 \uc815\ub9ac"},"content":{"rendered":"\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/NeoStudio_20241218_112641_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac13.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20241218_112641_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac13\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-e757a50c-76e6-484f-8261-2ed59fa050ba\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/NeoStudio_20241218_112641_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac13.pdf\">NeoStudio_20241218_112641_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac13<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/NeoStudio_20241218_112641_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac13.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-e757a50c-76e6-484f-8261-2ed59fa050ba\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1056\" height=\"988\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image.png\" alt=\"\" class=\"wp-image-7689\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image.png 1056w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-768x719.png 768w\" sizes=\"auto, (max-width: 1056px) 100vw, 1056px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1598\" height=\"1115\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-1.png\" alt=\"\" class=\"wp-image-7690\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-1.png 1598w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-1-768x536.png 768w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-1-1536x1072.png 1536w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-1-1568x1094.png 1568w\" sizes=\"auto, (max-width: 1598px) 100vw, 1598px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1006\" height=\"920\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-2.png\" alt=\"\" class=\"wp-image-7692\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-2.png 1006w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-2-768x702.png 768w\" sizes=\"auto, (max-width: 1006px) 100vw, 1006px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1153\" height=\"916\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-3.png\" alt=\"\" class=\"wp-image-7693\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-3.png 1153w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-3-768x610.png 768w\" sizes=\"auto, (max-width: 1153px) 100vw, 1153px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1173\" height=\"1100\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-4.png\" alt=\"\" class=\"wp-image-7694\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-4.png 1173w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/12\/image-4-768x720.png 768w\" sizes=\"auto, (max-width: 1173px) 100vw, 1173px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/IEEE_802\">https:\/\/en.wikipedia.org\/wiki\/IEEE_802<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">http:\/\/www.ktword.co.kr\/test\/view\/view.php?m_temp1=2303&#038;id=372<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"WLAN \uae30\uc220\uc5d0 \ub300\ud55c \ubaa8\ub4e0 \uac83 (IEEE 802.11a to zz  The Expanding World of Wi-Fi)\" width=\"580\" height=\"326\" src=\"https:\/\/www.youtube.com\/embed\/fHB5-WyrDos?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Lecture - 28 IEEE 802 LANs\" width=\"580\" height=\"435\" src=\"https:\/\/www.youtube.com\/embed\/QhKIaK4ReUA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/youtu.be\/OO2IhNiNLRk?si=Q-d60oWNFkJJwPnT\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/lms.kmooc.kr\/course\/view.php?id=4969#section-12\">\ucef4\ud4e8\ud130 \ub124\ud2b8\uc6cc\ud0b9, K-mooc, \uc720\uc601\ud658<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/lms.kmooc.kr\/course\/view.php?id=4969#section-12\">https:\/\/lms.kmooc.kr\/course\/view.php?id=4969#section-12<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/naon.me\/posts\/til83\">https:\/\/naon.me\/posts\/til83<\/a><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"How Ethernet Works and IEEE 802.3 Specification\" width=\"580\" height=\"435\" src=\"https:\/\/www.youtube.com\/embed\/fRHkZPtsR5I?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Logical Link Control (LLC IEEE 802.2)\" width=\"580\" height=\"326\" src=\"https:\/\/www.youtube.com\/embed\/dgBo9pF30pk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"IEEE 802 Standards  Ethernet networking - Ethernet standards\" width=\"580\" height=\"326\" src=\"https:\/\/www.youtube.com\/embed\/vstIMe4a0MU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n&#8220;`html\n<div class=\"chapter19-wide\">\n\n  <h1>IEEE 802.11 \uc815\ub9ac<\/h1>\n\n  <div class=\"subtitle\">\n    IEEE 802 \u00b7 LLC \u00b7 MAC \u00b7 DCF \u00b7 PCF \u00b7 CSMA\/CA \u00b7 IFS \u00b7 WLAN \u00b7 WEP \u00b7 802.11i\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>1. IEEE 802 \uac1c\uc694<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294 IEEE 802\ub97c\n      LAN\uc758 \uae30\ubcf8 \uae30\ub2a5\uc744 \uacc4\uce35\uc801\uc73c\ub85c \uc815\uc758\ud55c \ud45c\uc900\uc73c\ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <p>\n      OSI\uc758 Data Link \uacc4\uce35\uc744\n      LLC\uc640 MAC\uc73c\ub85c \ub098\ub204\uc5b4 \uc0ac\uc6a9\ud558\ub294 \uad6c\uc870\uac00 \ud575\uc2ec\uc774\ub2e4.\n    <\/p>\n\n    <pre>\n      OSI\n\n      Data Link\n      Physical\n\n          \u2193\n\n      IEEE 802\n\n      LLC\n      MAC\n      PLCP\n      PMD\n    <\/pre>\n\n    <div class=\"memory\">\n      <strong>\n        IEEE 802\ub294 OSI\uc758 Data Link \uae30\ub2a5\uc744\n        LLC\uc640 MAC\uc73c\ub85c \ubd84\ub9ac\ud558\uc5ec \uc815\uc758\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>2. OSI\uc640 IEEE 802 \uacc4\uce35 \uad00\uacc4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n      OSI\uc640 IEEE 802\uc758 \ub300\uc751\uad00\uacc4\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ubcf4\uc5ec\uc900\ub2e4.\n    <\/p>\n\n    <div class=\"table-wrap\">\n\n      <table>\n        <thead>\n          <tr>\n            <th>OSI<\/th>\n            <th>IEEE 802<\/th>\n          <\/tr>\n        <\/thead>\n\n        <tbody>\n          <tr>\n            <td><strong>Data Link<\/strong><\/td>\n            <td>LLC + MAC<\/td>\n          <\/tr>\n\n          <tr>\n            <td><strong>Physical<\/strong><\/td>\n            <td>PLCP + PMD<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n\n    <\/div>\n\n    <p>\n      LLC\ub294 \uc0c1\uc704\uacc4\uce35\uc5d0\n      \uc11c\ube44\uc2a4 \uc811\uc18d\uc810 LSAP\ub97c \uc81c\uacf5\ud558\ub294 \uac83\uc73c\ub85c \ud45c\uc2dc\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>3. LLC\uc640 MAC\uc744 \ubd84\ub9ac\ud55c \uc774\uc720<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294\n      Data Link \uacc4\uce35\uc744 LLC\uc640 MAC\uc73c\ub85c\n      \ubd84\ub9ac\ud55c \uc774\uc720\ub97c \ub450 \uac00\uc9c0\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <ol>\n      <li>\uc2e0\uaddc \ub9e4\uccb4\u00b7\uc811\uadfc\ubc29\uc2dd\uc774 \ucd94\uac00\ub418\uc5b4\ub3c4 \uae30\uc874 \uc0c1\uc704\uacc4\uce35\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5 \ucd5c\uc18c\ud654<\/li>\n      <li>\ud558\ub098\uc758 LLC\uac00 \uc5ec\ub7ec MAC\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub3c4\ub85d \uad6c\uc131<\/li>\n    <\/ol>\n\n    <div class=\"formula\">\n      LLC\n      \u2192\n      Upper Layer Interface\n    <\/div>\n\n    <div class=\"formula\">\n      MAC\n      \u2192\n      Medium Access Control\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>4. Encapsulation<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\ub294 \uc0c1\uc704\uacc4\uce35 Data\uac00\n      \uacc4\uce35\ubcc4 Header\ub97c \ucd94\uac00\ud558\uba70 \ub0b4\ub824\uac00\ub294 \uad6c\uc870\uac00 \uc788\ub2e4.\n    <\/p>\n\n    <pre>\n      Application Data\n            \u2502\n            \u25bc\n      TCP Header \ucd94\uac00\n            \u2502\n            \u25bc\n        TCP Segment\n            \u2502\n            \u25bc\n       IP Header \ucd94\uac00\n            \u2502\n            \u25bc\n        IP Datagram\n            \u2502\n            \u25bc\n      LLC Header \ucd94\uac00\n            \u2502\n            \u25bc\n         LLC PDU\n            \u2502\n            \u25bc\n      MAC Header \/ Trailer\n            \u2502\n            \u25bc\n         MAC Frame\n    <\/pre>\n\n    <div class=\"memory\">\n      <strong>\n        LLC\uc5d0\uc11c \ub9cc\ub4e0 PDU\uc5d0\n        MAC Header\uc640 Trailer\uac00 \ucd94\uac00\ub418\uc5b4\n        MAC Frame\uc774 \ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>5. MAC Frame<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294\n      MAC Frame\uc5d0 CRC\uac00 \uc788\uc73c\uba70,\n      2\uacc4\uce35\uc5d0\uc11c Error Check\ub97c \uc218\ud589\ud55c\ub2e4\uace0 \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      MAC Frame\n      \u2192\n      CRC\n      \u2192\n      Error Check\n    <\/div>\n\n    <p>\n      \uc190\uc0c1\ub41c Frame\uc740\n      \ud3d0\uae30\ud558\ub294 \ubc29\ud5a5\uc73c\ub85c \uc815\ub9ac\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>6. LLC \uc11c\ube44\uc2a4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\ub294 LLC \uc11c\ube44\uc2a4\ub85c\n      \ub2e4\uc74c \uc138 \uac00\uc9c0\uac00 \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <ol>\n      <li>\ube44\uc811\uc18d \ube44\ud655\uc778 \uc11c\ube44\uc2a4<\/li>\n      <li>\uc811\uc18d\ud615 \uc11c\ube44\uc2a4<\/li>\n      <li>\uc2b9\uc778\ub41c \ube44\uc811\uc18d \uc11c\ube44\uc2a4<\/li>\n    <\/ol>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>7. \ube44\uc811\uc18d \ube44\ud655\uc778 \uc11c\ube44\uc2a4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc811\uc18d\uc744 \uc124\uc815\ud558\uc9c0 \uc54a\uace0\n      \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud558\uba70,\n      \uc804\ub2ec \uc5ec\ubd80\ub97c \ubcf4\uc7a5\ud558\uc9c0 \uc54a\ub294 \ud615\ud0dc\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      No Connection\n      +\n      No Acknowledgement\n    <\/div>\n\n    <p>\n      Error Control\uacfc Flow Control\uc774 \uc5c6\ub294 \ubc29\ud5a5\uc73c\ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>8. \uc811\uc18d\ud615 \uc11c\ube44\uc2a4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc811\uc18d\ud615 \uc11c\ube44\uc2a4\ub294\n      LLC \uc0c1\uc704\uacc4\uce35\uc5d0 \uc5f0\uacb0\uc744 \uc124\uc815\ud558\uc5ec\n      \uc804\uc1a1\ud558\ub294 \ud615\ud0dc\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <p>\n      NeoStudio\uc5d0\ub294 \ub2e4\uc74c \uae30\ub2a5\uc774 \uc801\ud600 \uc788\ub2e4.\n    <\/p>\n\n    <ul>\n      <li>Error Control<\/li>\n      <li>Flow Control<\/li>\n      <li>\uc21c\uc11c \ubcf4\uc7a5<\/li>\n    <\/ul>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>9. \uc2b9\uc778\ub41c \ube44\uc811\uc18d \uc11c\ube44\uc2a4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc5f0\uacb0\uc124\uc815\uc740 \ud558\uc9c0 \uc54a\uc9c0\ub9cc,\n      \uc911\uc694\ud55c \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud560 \ub54c\n      \ud655\uc778\uc751\ub2f5\uc744 \uc0ac\uc6a9\ud558\ub294 \uc11c\ube44\uc2a4\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      Connectionless\n      +\n      Acknowledgement\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>10. IEEE 802.11\uc758 \ud544\uc694\uc131<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294 IEEE 802\ub97c\n      \ubb34\uc120\ud658\uacbd\uc5d0 \uadf8\ub300\ub85c \uc801\uc6a9\ud560 \uacbd\uc6b0\n      \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud558\ub294 \ubc29\ud5a5\uc73c\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <p>\n      \uc720\uc120\uc758 Token Bus \ubc29\uc2dd\uacfc \ub2ec\ub9ac\n      \ubb34\uc120\ud658\uacbd\uc5d0\uc11c\ub294 \ub2e4\uc74c \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud55c\ub2e4\uace0 \uc801\ub294\ub2e4.\n    <\/p>\n\n    <ul>\n      <li>\uc7a5\uce58\uac00 \uc790\uc720\ub86d\uac8c \uc774\ub3d9<\/li>\n      <li>\ubb34\uc120 \uc804\ud30c\ub85c \uc5f0\uacb0<\/li>\n      <li>\uae30\uae30 \uc0c1\ud0dc\uac00 \uacc4\uc18d \ubcc0\ud560 \uc218 \uc788\uc74c<\/li>\n    <\/ul>\n\n    <div class=\"formula\">\n      Wired MAC\n      \u2260\n      Wireless MAC\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ubb34\uc120 \ub9e4\uccb4\uc758 \ud2b9\uc131 \ub54c\ubb38\uc5d0\n        \ubcc4\ub3c4\uc758 802.11 MAC \uae30\ub2a5\uc774 \ud544\uc694\ud558\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>11. 802.11 MAC \uae30\ub2a5<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294 MAC \uae30\ub2a5\uc744\n      \ub2e4\uc74c \uc138 \ud56d\ubaa9\uc73c\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <ol>\n      <li>\uc2e0\ub8b0\uc131 \uc788\ub294 \ub370\uc774\ud130 \uc804\uc1a1<\/li>\n      <li>\uc811\uadfc\uc81c\uc5b4<\/li>\n      <li>\ubcf4\uc548<\/li>\n    <\/ol>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>12. \uc2e0\ub8b0\uc131 \uc788\ub294 \ub370\uc774\ud130 \uc804\uc1a1<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ubb34\uc120 Channel\uc740 \uc2e0\ub8b0\uc131\uc774 \ub0ae\uc744 \uc218 \uc788\uc73c\ubbc0\ub85c\n      MAC \uacc4\uce35\uc5d0\uc11c \uc774\ub97c \ubcf4\uc644\ud558\ub294 \ubc29\ud5a5\uc73c\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <p>\n      Frame \uad50\ud658 Protocol\uc744 \uc0ac\uc6a9\ud558\uba70\n      ACK\uac00 \uc5c6\uc73c\uba74 \uc7ac\uc804\uc1a1\ud558\ub294 \ud750\ub984\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      Data\n      \u2192\n      ACK\n    <\/div>\n\n    <div class=\"formula\">\n      ACK \uc5c6\uc74c\n      \u2192\n      Retransmission\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>13. \uc811\uadfc\uc81c\uc5b4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 IEEE 802.11 MAC\uc744\n      DCF\uc640 PCF\ub85c \uad6c\ubd84\ud55c\ub2e4.\n    <\/p>\n\n    <pre>\n              LLC\n               \u2502\n       \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n       \u25bc               \u25bc\n      PCF             DCF\n   \ubb34\uacbd\uc7c1\uc11c\ube44\uc2a4      \uacbd\uc7c1\uc11c\ube44\uc2a4\n    <\/pre>\n\n    <div class=\"formula\">\n      DCF\n      =\n      Distributed Coordination Function\n    <\/div>\n\n    <div class=\"formula\">\n      PCF\n      =\n      Point Coordination Function\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>14. DCF<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      DCF\ub294 \uacbd\uc7c1\ubc29\uc2dd\uc73c\ub85c\n      \ubb34\uc120\ub9e4\uccb4\ub97c \uc0ac\uc6a9\ud558\ub294 \uad6c\uc870\uc774\ub2e4.\n    <\/p>\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n      Binary Exponential Backoff\ub97c \uc774\uc6a9\ud558\uc5ec\n      Backoff Slot\uc744 \uc120\ud0dd\ud558\ub294 \uacfc\uc815\uc744 \ubcf4\uc5ec\uc900\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      Busy Medium\n      \u2192\n      Wait\n      \u2192\n      DIFS\n      \u2192\n      Random Backoff\n      \u2192\n      Transmission\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>15. DIFS<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ub9e4\uccb4\uac00 DIFS\ubcf4\ub2e4 \uc624\ub798 Idle \uc0c1\ud0dc\uc774\uba74\n      \uc989\uc2dc \uc811\uadfc\ud560 \uc218 \uc788\ub294 \ud750\ub984\uc774 \uadf8\ub9bc\uc5d0 \ud45c\uc2dc\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      Medium Idle \u2265 DIFS\n      \u2192\n      Access \uac00\ub2a5\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>16. Backoff Window<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uacbd\uc7c1\uc774 \ubc1c\uc0dd\ud558\uba74\n      \uac01 Station\uc740 Backoff Window\uc5d0\uc11c\n      \ubb34\uc791\uc704 Slot\uc744 \uc120\ud0dd\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      Binary Exponential Backoff\n      \u2192\n      Random Slot Selection\n    <\/div>\n\n    <p>\n      \uc6d0\ubcf8 \uadf8\ub9bc\uc5d0\uc11c\ub294 \uc774\ub97c\n      \uacbd\uc7c1 Window\uc640 Slot Time\uc73c\ub85c \ud45c\ud604\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>17. IFS<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294\n      IFS\ub97c \uc138 \uc885\ub958\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <ul>\n      <li>SIFS<\/li>\n      <li>PIFS<\/li>\n      <li>DIFS<\/li>\n    <\/ul>\n\n    <div class=\"formula\">\n      SIFS\n      &lt;\n      PIFS\n      &lt;\n      DIFS\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        IFS\uac00 \uc9e7\uc744\uc218\ub85d\n        \ub9e4\uccb4 \uc811\uadfc \uc6b0\uc120\uc21c\uc704\uac00 \ub192\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>18. PCF<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      PCF\ub294 Point Coordinator\uac00\n      \ubb34\uacbd\uc7c1 \ubc29\uc2dd\uc73c\ub85c \ub9e4\uccb4 \uc811\uadfc\uc744 \uc81c\uc5b4\ud558\ub294 \uad6c\uc870\ub85c \uadf8\ub824\uc838 \uc788\ub2e4.\n    <\/p>\n\n    <p>\n      Superframe \uc548\uc5d0\uc11c\n      \ubb34\uacbd\uc7c1 \uae30\uac04\uacfc \uacbd\uc7c1 \uae30\uac04\uc744 \uad6c\ubd84\ud55c\ub2e4.\n    <\/p>\n\n    <pre>\n      Superframe\n\n      \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n      \u2502 PCF           \u2502 DCF                 \u2502\n      \u2502 \ubb34\uacbd\uc7c1 \uae30\uac04    \u2502 \uacbd\uc7c1 \uae30\uac04            \u2502\n      \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n    <\/pre>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>19. Superframe<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294\n      Superframe\uc774 \uc77c\uc815\ud55c \uc8fc\uae30\ub85c \ubc18\ubcf5\ub418\ub294 \uad6c\uc870\ub97c \ubcf4\uc5ec\uc900\ub2e4.\n    <\/p>\n\n    <p>\n      Beacon\uc774 \uc9c0\uc5f0\ub418\uba74\n      \uc2e4\uc81c Superframe \uad6c\uac04\uc774 \uc904\uc5b4\ub4e4 \uc218 \uc788\ub2e4\ub294 \ud45c\ud604\ub3c4 \uc788\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>20. IEEE 802.11 PHY \ubc29\uc2dd<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\ub294 802.11 Physical Layer \ubc29\uc2dd\uc774\n      \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\ub9ac\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <ul>\n      <li>Infrared<\/li>\n      <li>2.4 GHz FHSS<\/li>\n      <li>2.4 GHz DSSS<\/li>\n      <li>5 GHz OFDM<\/li>\n    <\/ul>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>21. 802.11 \ucd08\uae30 PHY<\/h2>\n\n  <div class=\"table-wrap\">\n\n    <table>\n\n      <thead>\n        <tr>\n          <th>\ubc29\uc2dd<\/th>\n          <th>\uc6d0\ubcf8 \uc774\ubbf8\uc9c0 \ub0b4\uc6a9<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n\n        <tr>\n          <td><strong>IR<\/strong><\/td>\n          <td>802.11 IR, 1\/2 Mbps<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>FHSS<\/strong><\/td>\n          <td>2.4 GHz, 1\/2 Mbps<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>DSSS<\/strong><\/td>\n          <td>2.4 GHz, 1\/2 Mbps<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>OFDM<\/strong><\/td>\n          <td>5 GHz<\/td>\n        <\/tr>\n\n      <\/tbody>\n\n    <\/table>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>22. 802.11b<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0\ub294\n      802.11b\ub97c DSSS \uacc4\uc5f4 \ud655\uc7a5\uc73c\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      802.11b\n      \u2192\n      5.5 \/ 11 Mbps\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>23. 802.11a<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      802.11a\ub294 5 GHz OFDM\uc744 \uc0ac\uc6a9\ud558\uba70\n      \ub2e4\uc74c \uc804\uc1a1\ub960\uc774 \uc774\ubbf8\uc9c0\uc5d0 \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      6 \/ 12 \/ 24 Mbps\n    <\/div>\n\n    <p>\n      \uc120\ud0dd\uc801\uc73c\ub85c\n    <\/p>\n\n    <div class=\"formula\">\n      9 \/ 18 \/ 36 \/ 54 Mbps\n    <\/div>\n\n    <p>\n      \uac00 \ud45c\uc2dc\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>24. 802.11g<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      IEEE 802.11g\ub294\n      2.4 GHz \ub300\uc5ed\uacfc OFDM\uc744 \uc0ac\uc6a9\ud558\ub294 \ud615\ud0dc\ub85c\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0\uc5d0 \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      802.11g\n      \u2192\n      2.4 GHz + OFDM\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>25. \ubcf4\uc548<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294 \ubb34\uc120 LAN \ubcf4\uc548\uc73c\ub85c\n      WEP\ub97c \uba3c\uc800 \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <p>\n      \uadf8\ub7ec\ub098 WEP\ub294 \ucde8\uc57d\uc810\uc774 \uc788\uc5b4\n      \uc778\uc99d\u00b7\uae30\ubc00\uc131\u00b7\ub370\uc774\ud130 \ubb34\uacb0\uc131 \uce21\uba74\uc5d0\uc11c\n      \ubb38\uc81c\uac00 \uc788\ub2e4\uace0 \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      WEP\n      \u2192\n      Security Weakness\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>26. 802.11i<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      NeoStudio\uc5d0\uc11c\ub294\n      WEP\uc758 \ucde8\uc57d\uc810\uc744 \uac1c\uc120\ud558\uae30 \uc704\ud574\n      802.11i\uac00 \uac1c\ubc1c\ub418\uc5c8\ub2e4\uace0 \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      WEP Weakness\n      \u2192\n      802.11i\n    <\/div>\n\n    <p>\n      \uae30\ub2a5\uc740 \ub2e4\uc74c \uc138 \uac00\uc9c0\ub85c \uc815\ub9ac\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <ol>\n      <li>\uc778\uc99d<\/li>\n      <li>\uae30\ubc00\uc131<\/li>\n      <li>\ub370\uc774\ud130 \ubb34\uacb0\uc131<\/li>\n    <\/ol>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>27. AES<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc778\uc99d \uc11c\ubc84 AS\ub97c \uc694\uad6c\ud558\ub294 \uc778\uc99d Protocol\uacfc \ud568\uaed8\n      AES \uc801\uc6a9\uc774 \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      802.11i\n      \u2192\n      AES\n    <\/div>\n\n    <p>\n      NeoStudio\uc5d0\ub294 AES\ub97c\n      128 bit \ubc29\uc2dd\uc73c\ub85c \uae30\ub85d\ud558\uace0 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      AES\n      =\n      128 bit\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>28. \uae30\uc874 \uc7a5\ube44 Upgrade<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uae30\uc874 \uc7a5\ube44 Upgrade\uc640 \uad00\ub828\ud574\n      RC4 \uae30\ubc18 \ubc29\uc2dd\uc5d0 \ub300\ud55c \uba54\ubaa8\uac00 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"warning\">\n      <strong>\n        \ub9c8\uc9c0\ub9c9 \ud398\uc774\uc9c0\uc758 RC4 \/ \uae30\uc874 \uc7a5\ube44 Upgrade \uad00\ub828 \ubb38\uc7a5\uc740\n        \uc190\uae00\uc528\uac00 \uc77c\ubd80 \ubd88\uba85\ud655\ud558\uc5ec\n        WPA \/ TKIP \ub4f1\uc758 \uc678\ubd80 \ubcf4\uc548\uc774\ub860\uc73c\ub85c\n        \uc784\uc758 \ud655\ub300\ud558\uc9c0 \uc54a\uc558\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>29. \uc804\uccb4 \uad6c\uc870<\/h2>\n\n  <div class=\"card\">\n\n    <pre>\n                     IEEE 802\n                        \u2502\n              \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n              \u25bc                   \u25bc\n             LLC                 MAC\n              \u2502                   \u2502\n       \uc0c1\uc704\uacc4\uce35 Interface       \ub9e4\uccb4\uc811\uadfc\n              \u2502                   \u2502\n              \u2502          \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n              \u2502          \u25bc                 \u25bc\n              \u2502         DCF               PCF\n              \u2502      \uacbd\uc7c1\uc11c\ube44\uc2a4          \ubb34\uacbd\uc7c1\uc11c\ube44\uc2a4\n              \u2502          \u2502\n              \u2502          \u25bc\n              \u2502       DIFS\n              \u2502       Backoff\n              \u2502\n              \u25bc\n          LLC Service\n      \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n      \u25bc       \u25bc        \u25bc\n   \ube44\uc811\uc18d   \uc811\uc18d\ud615   \uc2b9\uc778 \ube44\uc811\uc18d\n\n                        \u2502\n                        \u25bc\n                  IEEE 802.11 PHY\n             IR \/ FHSS \/ DSSS \/ OFDM\n\n                        \u2502\n                        \u25bc\n                      Security\n                        \u2502\n                  WEP \u2192 802.11i\n                        \u2502\n                        \u25bc\n                       AES\n    <\/pre>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>30. \uc774\ubbf8\uc9c0 \u00b7 NeoStudio \ud575\uc2ec \uc815\ub9ac<\/h2>\n\n  <div class=\"table-wrap\">\n\n    <table>\n\n      <thead>\n        <tr>\n          <th>\ud56d\ubaa9<\/th>\n          <th>\uc6d0\ubcf8 \ub0b4\uc6a9<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n\n        <tr>\n          <td><strong>IEEE 802<\/strong><\/td>\n          <td>OSI Data Link\ub97c LLC + MAC\uc73c\ub85c \ubd84\ub9ac<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>LLC<\/strong><\/td>\n          <td>\uc0c1\uc704\uacc4\uce35 Interface, Error \/ Flow Control<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>MAC<\/strong><\/td>\n          <td>\uc2e0\ub8b0\uc131 \uc788\ub294 \uc804\uc1a1, \uc811\uadfc\uc81c\uc5b4, \ubcf4\uc548<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>Encapsulation<\/strong><\/td>\n          <td>LLC PDU \u2192 MAC Header\/Trailer \u2192 MAC Frame<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>DCF<\/strong><\/td>\n          <td>\uacbd\uc7c1\uc11c\ube44\uc2a4, DIFS + Backoff<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>PCF<\/strong><\/td>\n          <td>\ubb34\uacbd\uc7c1\uc11c\ube44\uc2a4<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>IFS<\/strong><\/td>\n          <td>SIFS &lt; PIFS &lt; DIFS<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>802.11 PHY<\/strong><\/td>\n          <td>IR, FHSS, DSSS, OFDM<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>802.11b<\/strong><\/td>\n          <td>2.4 GHz DSSS, 5.5 \/ 11 Mbps<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>802.11a<\/strong><\/td>\n          <td>5 GHz OFDM, \ucd5c\ub300 54 Mbps \ud45c\uae30<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>802.11g<\/strong><\/td>\n          <td>2.4 GHz OFDM<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>Security<\/strong><\/td>\n          <td>WEP \ucde8\uc57d \u2192 802.11i \u2192 \uc778\uc99d\u00b7\uae30\ubc00\uc131\u00b7\ubb34\uacb0\uc131, AES<\/td>\n        <\/tr>\n\n      <\/tbody>\n\n    <\/table>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <div class=\"warning\">\n    <strong>\n      \uc774 HTML\uc740 \ud398\uc774\uc9c0 \ubcf8\ubb38\uacfc\n      Wikipedia, K-MOOC, YouTube \ub4f1 \uc678\ubd80 \ub9c1\ud06c\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0,\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0 5\uc7a5\uacfc\n      NeoStudio PDF 1\uac1c(\ucd1d 6\ud398\uc774\uc9c0)\ub9cc\n      OCR\/\uc2dc\uac01 \ud310\ub3c5\ud558\uc5ec \uc791\uc131\ud588\ub2e4.\n\n      NeoStudio PDF 6\ud398\uc774\uc9c0\ub294 \ubaa8\ub450 \uc9c1\uc811 \ud655\uc778\ud558\uc600\ub2e4.\n\n      \uc77c\ubc18 \uc774\ubbf8\uc9c0 5\uc7a5\uc740\n      OSI\uc640 IEEE 802 \uacc4\uce35 \ub300\uc751,\n      Protocol Encapsulation,\n      802.11 DCF\/PCF \uad6c\uc870,\n      MAC Timing,\n      802.11 PHY \uacc4\uc5f4\uc744 \ubcf4\uc5ec\uc900\ub2e4.\n\n      NeoStudio\ub294\n      LLC\/MAC \ubd84\ub9ac \uc774\uc720,\n      LLC Service,\n      MAC\uc758 \uc2e0\ub8b0\uc131\u00b7\uc811\uadfc\uc81c\uc5b4\u00b7\ubcf4\uc548,\n      DCF,\n      802.11 \ubcf4\uc548 \uac1c\uc120\uc744 \uc911\uc2ec\uc73c\ub85c \uae30\ub85d\ud55c\ub2e4.\n\n      RTS\/CTS, Hidden Node,\n      NAV, BSSID, Association \uc808\ucc28 \ub4f1\uc740\n      \uc774\ubc88 \uc6d0\ubcf8 \uc774\ubbf8\uc9c0\uc640 NeoStudio\uc5d0\n      \uba85\ud655\ud558\uac8c \uc124\uba85\ub418\uc5b4 \uc788\uc9c0 \uc54a\uc544 \ucd94\uac00\ud558\uc9c0 \uc54a\uc558\ub2e4.\n\n      \ub9c8\uc9c0\ub9c9 \ud398\uc774\uc9c0\uc758\n      WPA \/ RC4 \/ \uae30\uc874 \uc7a5\ube44 Upgrade \uad00\ub828 \uc77c\ubd80 \ud544\uae30\ub294\n      \uba85\ud655\ud558\uc9c0 \uc54a\uc544 \uc678\ubd80 \ubb34\uc120\ubcf4\uc548 \uc774\ub860\uc73c\ub85c \ubcf4\uc644\ud558\uc9c0 \uc54a\uc558\ub2e4.\n    <\/strong>\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <div class=\"keywords\">\n    IEEE 802.11,\n    IEEE 802,\n    WLAN,\n    Wi-Fi,\n    LLC,\n    MAC,\n    PLCP,\n    PMD,\n    DCF,\n    PCF,\n    CSMA\/CA,\n    DIFS,\n    SIFS,\n    PIFS,\n    Binary Exponential Backoff,\n    FHSS,\n    DSSS,\n    OFDM,\n    WEP,\n    802.11i,\n    AES\n  <\/div>\n\n<\/div>\n&#8220;`\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/en.wikipedia.org\/wiki\/IEEE_802 http:\/\/www.ktword.co.kr\/test\/view\/view.php?m_temp1=2303&#038;id=372 \ucef4\ud4e8\ud130 \ub124\ud2b8\uc6cc\ud0b9, K-mooc, \uc720\uc601\ud658 https:\/\/lms.kmooc.kr\/course\/view.php?id=4969#section-12 https:\/\/naon.me\/posts\/til83 &#8220;`html IEEE 802.11 \uc815\ub9ac IEEE 802 \u00b7 LLC \u00b7 MAC \u00b7 DCF \u00b7 PCF \u00b7 CSMA\/CA \u00b7 IFS \u00b7 WLAN \u00b7 WEP \u00b7 802.11i 1. IEEE 802 \uac1c\uc694 NeoStudio\uc5d0\uc11c\ub294 IEEE 802\ub97c LAN\uc758 \uae30\ubcf8 \uae30\ub2a5\uc744 \uacc4\uce35\uc801\uc73c\ub85c \uc815\uc758\ud55c \ud45c\uc900\uc73c\ub85c \uc815\ub9ac\ud55c\ub2e4. OSI\uc758 Data Link \uacc4\uce35\uc744 LLC\uc640 MAC\uc73c\ub85c \ub098\ub204\uc5b4 \uc0ac\uc6a9\ud558\ub294 \uad6c\uc870\uac00 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1185],"tags":[1638,193,1639],"class_list":["post-7677","post","type-post","status-publish","format-standard","hentry","category-1185","tag-802-11","tag-wifi","tag-lan"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/7677","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=7677"}],"version-history":[{"count":13,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/7677\/revisions"}],"predecessor-version":[{"id":9665,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/7677\/revisions\/9665"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=7677"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=7677"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=7677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}