{"id":5405,"date":"2018-06-21T17:14:39","date_gmt":"2018-06-21T15:14:39","guid":{"rendered":"http:\/\/www.ehabbooks.com\/?p=5405"},"modified":"2018-06-21T17:14:39","modified_gmt":"2018-06-21T15:14:39","slug":"%d8%a7%d9%84%d8%af%d8%b1%d8%b3-27-%d8%a7%d9%84%d8%b7%d8%a8%d9%82%d8%a7%d8%aa-%d8%a7%d9%84%d9%81%d8%b1%d8%b9%d9%8a%d8%a9","status":"publish","type":"post","link":"https:\/\/www.ehabbooks.com\/?p=5405","title":{"rendered":"\u0627\u0644\u062f\u0631\u0633 27: \u0627\u0644\u0637\u0628\u0642\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629 \u0645\u0646 \u0637\u0628\u0642\u0629 \u0648\u0635\u0644\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a (Data Link)"},"content":{"rendered":"<p><span style=\"font-size: 14pt;\"><span style=\"font-family: PT Bold Heading;\"> \u0637\u0628\u0642\u0629 <\/span><span style=\"font-family: TodaySHOP-Bold;\">Logical Link Control LLC<br \/>\n<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u062a\u0642\u062f\u0645 \u062e\u062f\u0645\u0627\u062a \u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u0634\u0628\u0643\u0629 (<\/span><span style=\"font-family: Tahoma;\">network Layer<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">) , \u062d\u064a\u062b \u064a\u062a\u0645 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0646\u0634\u0627\u0621 \u0627\u062a\u0635\u0627\u0644 \u0645\u0646\u0637\u0642\u064a \u0628\u064a\u0646 \u0646\u0642\u0637\u062a\u064a\u0646 \u0627\u0648 \u062c\u0647\u0627\u0632\u064a\u0646 \u0641\u064a \u0646\u0641\u0633 \u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 \u0648 \u064a\u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0648 \u0625\u062f\u0627\u0631\u062a\u0647 \u0644\u062a\u0645\u0631\u064a\u0631 \u0648\u062d\u062f\u0627\u062a \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0648 \u0625\u064a\u0635\u0627\u0644\u0647\u0627 \u0644\u0648\u062c\u0647\u062a\u0647\u0627.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0648 \u064a\u062a\u0645 \u0627\u064a\u0636\u0627 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u062a\u0646\u0641\u064a\u0630 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062a\u062f\u0641\u0642 <\/span><span style=\"font-family: Tahoma;\">Flow Control<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">, \u0648 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0643\u062a\u0634\u0627\u0641 \u0627\u0644\u0623\u062e\u0637\u0627\u0621 \u0648 <\/span><span style=\"font-family: Tahoma;\">Error detection<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">.<br \/>\n<\/span><\/p>\n<p><span style=\"font-size: 14pt;\"><span style=\"font-family: PT Bold Heading;\">\u0637\u0628\u0642\u0629 <\/span><span style=\"font-family: TodaySHOP-Bold;\">Media Access Control MAC<\/span><span style=\"font-family: PT Bold Heading;\"><br \/>\n<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u064a\u062a\u0645 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0633\u0627\u0644\u064a\u0628 \u0627\u0648 \u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644\u0627\u062a \u062e\u0627\u0635\u0629 \u062a\u062a\u062d\u0643\u0645 \u0641\u064a \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0648\u0635\u0648\u0644 \u0644\u0648\u0633\u0637 \u0646\u0642\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645 \u0641\u064a \u0627\u0644\u0634\u0628\u0643\u0629 \u0648 \u062a\u062d\u062f \u0645\u0646 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u0635\u0627\u062f\u0645 <\/span><span style=\"font-family: Tahoma;\">Collision<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0627\u0644\u062a\u064a \u062a\u062d\u062f\u062b \u0627\u0630\u0627 \u0642\u0627\u0645 \u0627\u0643\u062b\u0631 \u0645\u0646 \u062c\u0647\u0627\u0632 \u0628\u0625\u0631\u0633\u0627\u0644 \u0628\u064a\u0627\u0646\u0627\u062a \u0641\u064a \u0646\u0641\u0633 \u0627\u0644\u0648\u0642\u062a.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0641\u0645\u062b\u0644\u0627 \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0633\u0644\u0648\u0628 \u0627\u0648 \u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644 \u064a\u0633\u0645\u0649 \u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644 <\/span><span style=\"font-family: Tahoma;\">CSMA\/CD<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0644\u064a\u062d\u062f \u0645\u0646 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u0635\u0627\u062f\u0645 \u0627\u0644\u062a\u064a \u062a\u062d\u062f\u062b \u0641\u064a \u0628\u0639\u0636 \u0627\u0646\u0648\u0639 \u0634\u0628\u0643\u0627\u062a <\/span><span style=\"font-family: Tahoma;\">Ethernet<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">, \u0648 \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644 \u0627\u062e\u0631 \u064a\u0633\u0645\u0649 \u00a0<\/span><span style=\"font-family: Tahoma;\">CSMA\/CA<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0641\u064a \u0646\u0648\u0639 \u0627\u062e\u0631 \u0645\u0646 \u0634\u0628\u0643\u0627\u062a <\/span><span style=\"font-family: Tahoma;\">Ethernet<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0644\u0646\u0641\u0633 \u0627\u0644\u063a\u0631\u0636.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0648 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u0623\u064a\u0636\u0627 \u064a\u062a\u0645 \u062a\u0646\u0641\u064a\u0630 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u062a\u062f\u0641\u0642 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a <\/span><span style=\"font-family: Tahoma;\">Flow Control<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">, \u0648 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u062a\u064a \u064a\u062a\u0645 \u062a\u0645\u0631\u064a\u0631 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0628\u0647\u0627, \u062d\u064a\u062b \u062a\u0633\u062a\u0637\u064a\u0639 \u0627\u0644\u0627\u062c\u0647\u0632\u0629 \u0627\u0644\u0639\u0627\u0645\u0644\u0629 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u0645\u062b\u0644 \u062c\u0647\u0627\u0632 &#8220;\u0627\u0644\u0645\u0628\u062f\u0644&#8221; (<\/span><span style=\"font-family: Tahoma;\">Switch<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">) \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0643\u062b\u0631 \u0645\u0646 \u0637\u0631\u064a\u0642\u0629 \u0627\u0648 \u062a\u0642\u0646\u064a\u0629 \u0644\u062a\u0645\u0631\u064a\u0631 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0645\u062b\u0644:-<\/span><span style=\"font-family: Tahoma;\"><br \/>\n<\/span><\/p>\n<ul style=\"margin-left: 42pt;\">\n<li>\n<div style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u062a\u0642\u0646\u064a\u0629 <\/span><span style=\"font-family: Tahoma;\">Store and Forward<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">.<br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u062a\u0642\u0646\u064a\u0629 <\/span><span style=\"font-family: Tahoma;\">Cut-through<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"><br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u062a\u0642\u0646\u064a\u0629 <\/span><span style=\"font-family: Tahoma;\">Fragment-Free (Modified cut-through)<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"><br \/>\n<\/span><\/div>\n<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0643\u0645\u0627 \u064a\u062a\u0645 \u0623\u064a\u0636\u0627 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0628\u0639\u0636 \u0627\u0644\u062a\u0642\u0646\u064a\u0627\u062a \u0627\u0648 \u0627\u0644\u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0645\u0646\u0639 \u062d\u062f\u0648\u062b \u0627\u0644\u062d\u0644\u0642\u0627\u062a <\/span><span style=\"font-family: Tahoma;\">Loops<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629,\u0641\u0645\u062b\u0644\u0627 \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644 \u064a\u0639\u0631\u0641 \u0628\u0640 <\/span><span style=\"font-family: Tahoma;\">STP<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0644\u0647\u0630\u0627 \u0627\u0644\u063a\u0631\u0636.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0648 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u064a\u062a\u0645 \u0625\u0639\u0637\u0627\u0621 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0639\u0646\u0627\u0648\u064a\u0646 \u062e\u0627\u0635\u0629 \u062a\u0645\u064a\u0632\u0647\u0627 \u0639\u0646 \u0627\u0644\u0627\u062c\u0647\u0632\u0629 \u0627\u0644\u0623\u062e\u0631\u0649, \u0647\u0630\u0647 \u0627\u0644\u0639\u0646\u0627\u0648\u064a\u0646 \u062a\u0633\u0645\u0649 \u0627\u0644\u0639\u0646\u0627\u0648\u064a\u0646 \u0627\u0644\u0645\u0627\u062f\u064a\u0629 <\/span><span style=\"font-family: Tahoma;\">Physical Addresses<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">, \u0648 \u062a\u0633\u0645\u0649 \u0627\u064a\u0636\u0627 \u0628\u0627\u0633\u0645 \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 <\/span><span style=\"font-family: Tahoma;\">MAC addresses<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0627\u0647\u0645 \u0639\u0645\u0644\u064a\u0627\u062a \u062a\u062a\u0645 \u0641\u064a \u0637\u0628\u0642\u0629 \u0648\u0635\u0644\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0647\u064a:-<br \/>\n<\/span><\/p>\n<ul style=\"margin-left: 42pt;\">\n<li>\n<div style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0639\u0645\u0644\u064a\u0629 \u062a\u0633\u062c\u064a\u0644 \u0627\u0644\u0639\u0646\u0627\u0648\u064a\u0646 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629 <\/span><span style=\"font-family: Tahoma;\">Physical Addresses<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0627\u0648 <\/span><span style=\"font-family: Tahoma;\">MAC Addresses<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"><br \/>\n<\/span><\/div>\n<\/li>\n<li>\n<div style=\"text-align: justify;\"><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">\u0639\u0645\u0644\u064a\u0629 \u062a\u0645\u0631\u064a\u0631 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0645\u0646 \u0639\u0642\u062f\u0629 \u0627\u0644\u0649 \u0639\u0642\u062f\u0629 <\/span><span style=\"font-family: Tahoma;\">Node to Node<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0648 \u062a\u0633\u0645\u0649 <\/span><span style=\"font-family: Tahoma;\">Forwarding<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\"> \u0627\u0648 <\/span><span style=\"font-family: Tahoma;\">Switching<\/span><span style=\"font-family: Simplified Arabic; font-size: 12pt;\">.<\/span><span style=\"font-family: Tahoma;\"><br \/>\n<\/span><\/div>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u0637\u0628\u0642\u0629 Logical Link Control LLC \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u062a\u0642\u062f\u0645 \u062e\u062f\u0645\u0627\u062a \u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u0634\u0628\u0643\u0629 (network Layer) , \u062d\u064a\u062b \u064a\u062a\u0645 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0646\u0634\u0627\u0621 \u0627\u062a\u0635\u0627\u0644 \u0645\u0646\u0637\u0642\u064a \u0628\u064a\u0646 \u0646\u0642\u0637\u062a\u064a\u0646 \u0627\u0648 \u062c\u0647\u0627\u0632\u064a\u0646 \u0641\u064a \u0646\u0641\u0633 \u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 \u0648 \u064a\u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0648 \u0625\u062f\u0627\u0631\u062a\u0647 \u0644\u062a\u0645\u0631\u064a\u0631 \u0648\u062d\u062f\u0627\u062a \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0648 \u0625\u064a\u0635\u0627\u0644\u0647\u0627 \u0644\u0648\u062c\u0647\u062a\u0647\u0627. \u0648 \u064a\u062a\u0645 \u0627\u064a\u0636\u0627 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0637\u0628\u0642\u0629 \u062a\u0646\u0641\u064a\u0630 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062a\u062f\u0641\u0642 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":4614,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[162,156],"tags":[],"class_list":["post-5405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ccna1-3-4","category-course_ccna","entry","has-media","wvn-thumbs-layout-horizontal","wvn-btn-normal","wvn-tabs-layout-horizontal","has-no-thumbnails"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=\/wp\/v2\/posts\/5405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5405"}],"version-history":[{"count":0,"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=\/wp\/v2\/posts\/5405\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ehabbooks.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}