{"id":299,"date":"2020-04-05T23:40:24","date_gmt":"2020-04-05T21:40:24","guid":{"rendered":"http:\/\/tech.sosthe.sk\/?p=299"},"modified":"2020-04-06T16:30:54","modified_gmt":"2020-04-06T14:30:54","slug":"3-1-uloha-transportnej-vrstvy","status":"publish","type":"post","link":"http:\/\/tech.sosthe.sk\/index.php\/2020\/04\/05\/3-1-uloha-transportnej-vrstvy\/","title":{"rendered":"3.1.\u2002\u00daloha transportnej vrstvy"},"content":{"rendered":"<p>V aplika\u010dnej vrstve sme sa venovali protokolom, pomocou ktor\u00fdch vedeli komunikova\u0165 dve sie\u0165ov\u00e9 aplik\u00e1cie, aby si vedeli posla\u0165 nejak\u00e9 konkr\u00e9tne d\u00e1ta, naz\u00fdvan\u00e9 spr\u00e1vy (napr. s\u00fabor, heslo, DNS z\u00e1znam). Komunik\u00e1cia a teda aj v\u00fdmena spr\u00e1v je realizovan\u00e1 typicky cez rozhranie naz\u00fdvan\u00e9 <em><strong>socket<\/strong><\/em>, cez ktor\u00e9 odovzd\u00e1va aplik\u00e1cia (proces) spr\u00e1vy transportnej vrstve a tie\u017e prij\u00edma spr\u00e1vy z transportnej vrstvy. Hlavnou \u00falohou transportnej vrstvy je umo\u017eni\u0165 prenos spr\u00e1v (pr\u00fadu d\u00e1t) medzi dvoma procesmi alebo vl\u00e1knami na r\u00f4znych koncov\u00fdch zariadeniach. Transportn\u00e1 vrstva pri tom vyu\u017e\u00edva sie\u0165ov\u00fa vrstvu, ktor\u00e1 dok\u00e1\u017ee dopravi\u0165 pakety z po\u010d\u00edta\u010da na po\u010d\u00edta\u010d. Neform\u00e1lne povedan\u00e9, transportn\u00e1 vrstva \u201espracuje\u201c to, \u010do d\u00f4jde po sieti na dan\u00e9 zariadenie, zrekon\u0161truuje z toho spr\u00e1vy aplika\u010dnej vrstvy a po\u0161le ich spr\u00e1vnemu soketu a t\u00fdm aj aplik\u00e1cii, \u010do ho otvorila.<\/p>\n<p>Na internete sa pou\u017e\u00edvaj\u00fa hlavne dva transportn\u00e9 protokoly TCP a UDP.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V aplika\u010dnej vrstve sme sa venovali protokolom, pomocou ktor\u00fdch vedeli komunikova\u0165 dve sie\u0165ov\u00e9 aplik\u00e1cie, aby si vedeli posla\u0165 nejak\u00e9 konkr\u00e9tne d\u00e1ta, naz\u00fdvan\u00e9 spr\u00e1vy (napr. s\u00fabor,&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"_links":{"self":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/posts\/299"}],"collection":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/comments?post=299"}],"version-history":[{"count":1,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/posts\/299\/revisions"}],"predecessor-version":[{"id":300,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/posts\/299\/revisions\/300"}],"wp:attachment":[{"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/media?parent=299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/categories?post=299"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/tech.sosthe.sk\/index.php\/wp-json\/wp\/v2\/tags?post=299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}