{"id":293,"date":"2023-09-09T13:31:11","date_gmt":"2023-09-09T13:31:11","guid":{"rendered":"https:\/\/learnsysadmin.com\/?post_type=kbe_knowledgebase&#038;p=293"},"modified":"2023-09-09T13:33:17","modified_gmt":"2023-09-09T13:33:17","slug":"physical-layer-1st-layer-in-tcp-ip-osi-model","status":"publish","type":"kbe_knowledgebase","link":"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/","title":{"rendered":"Physical Layer \u2013 1st Layer in OSI Model"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Summary of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/#What_is_Physical_Layer_in_the_OSI_Model\" title=\"What is Physical Layer in the OSI Model?\">What is Physical Layer in the OSI Model?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/#What_is_the_Function_of_the_Physical_Layer\" title=\"What is the Function of the Physical Layer?\">What is the Function of the Physical Layer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/#What_is_the_Unit_of_Data_Encapsulation_in_Physical_Layer\" title=\"What is the Unit of Data Encapsulation in Physical Layer?\">What is the Unit of Data Encapsulation in Physical Layer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/#What_are_the_Protocols_used_at_Physical_Layer\" title=\"What are the Protocols used at Physical Layer?\">What are the Protocols used at Physical Layer?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Physical_Layer_in_the_OSI_Model\"><\/span>What is Physical Layer in the OSI Model?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Function_of_the_Physical_Layer\"><\/span>What is the Function of the Physical Layer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Unit_of_Data_Encapsulation_in_Physical_Layer\"><\/span>What is the Unit of Data Encapsulation in Physical Layer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_the_Protocols_used_at_Physical_Layer\"><\/span>What are the Protocols used at Physical Layer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n","protected":false},"excerpt":{"rendered":"<p>What is Physical Layer in the OSI Model? What is the Function of the Physical Layer? What is the Unit of Data Encapsulation in Physical Layer? What are the Protocols used at Physi..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","kbe_taxonomy":[52],"kbe_tags":[],"class_list":["post-293","kbe_knowledgebase","type-kbe_knowledgebase","status-publish","hentry","kbe_taxonomy-open-systems-interconnection-osi-model"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Physical Layer \u2013 1st Layer in OSI Model - Learn System Administration<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnsysadmin.com\/index.php\/knowledgebase\/physical-layer-1st-layer-in-tcp-ip-osi-model\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Physical Layer \u2013 1st Layer in OSI Model - Learn System Administration\" \/>\n<meta property=\"og:description\" content=\"What is Physical Layer in the OSI Model? 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