The Protocol Inovimbisa Kutendeseka Dhiyabhorosi Kutengesa
TCP (Transmission Control Protocol) inokosha inoshandiswa purogiramu inoshandiswa mukuendesa kwedhesi pamagetsi. A protocol, mumamiriro emakwikwi, isarudzo yemitemo nemitemo inotungamirira kuti kuendesa kwedhidhiyo kunoitwa sei kuti munhu wose munyika yose, asina kuzvimirira panzvimbo, software kana hardware anoshandiswa, anoita chinhu nenzira imwecheteyo . TCP inoshanda pamwe ne IP (Internet Protocol) mune do rinozivikanwa rinonzi TCP / IP. Iwe unogona kuona izwi iri mumagadzirirwo emagetsi ekombiyuta yako, smartphone yako kana chigadziri chinonyanya kushandiswa kana iwe uchitamba uchikomberedza nemagadziriro. Iyo IP chikamu inobata nekutarisa uye kutumira kwepakiti yedhipatimendi kubva kune imwe nzvimbo kuenda kune imwe nguva apo TCP inotarisira kuvimbika kwekutumira. Muchikamu chino, tichaona izvo TCP inoita uye kuti inoshanda sei.
Ipi TCP Inoita
Basa reTCP nderokudzora kuendesa kwemashoko zvakadai kuti ndeyechokwadi. Pamitambo yakafanana neInternet, data inoparidzirwa mumapakiti, ayo ari mashomanana e data anotumirwa zvakasununguka pamutambo, uye anosangana zvakare pavanosvika kunzvimbo yekudzorera dhenda yepakutanga.
Kuwedzerwa kwemashoko pane imwe nhandare kunoitwa muzvikamu, mutemo wega wega wega wega unoita chimwe chinhu chinopindirana nezvinoitwa nevamwe. Izvi zvakagadziridzwa zvinonzi "protocol stack". Basa reTCP nePIP riri muruoko rwepakati, imwe pamusoro peimwe. Semuenzaniso, mune imwe imwe, unogona kuva neHTTP - TCP - IP - WiFi. Izvi zvinoreva kuti kana, semuenzaniso, kombiyuta iri kuwana peji yewebhu, inoshandisa prototi yeHTTP kuti iwane peji yewebhu mu HTML, TCP inotungamirira kutapurika, IP inoshandiswa pamutambo (semuInternet), uye WiFi kutumira panzvimbo yenzvimbo.
TCP, saka, inotarisirwa kuve yakasimba pakuvimbiswa panguva yekutumira. A kutendeseka kudhindiswa kwemashoko ndeimwe umo zvinotevera zvinodiwa. Zviitiko zvinopiwa kupa zviri nani kunzwisisa pfungwa.
- Zvose mapepa anosvika kune imwe nzvimbo, iyo haisi yepakiti inorasika. Iwe hausi matsamba kana mitsara inoshaya kana iwe utumira email yako kana pakarepo mishumo.
- Hakuchina kunonoka kwakadaro kunogona kukanganisa huwandu hwe data. Iwe unoda hurukuro yako panguva yako yekufonera yeVoIP kana kuti kutumbuka audio kuti igare yakagadzikana, kukundikana izvo mazwi akataurwa angave asingazivikanwi.
- Yose data data packets inowanikwa zvakare. Iwe unoda mazwi ako mumutsara we email yako kuti uve muhurongwa wawakanyora. Zvimwe, mbongoro inogona kudya shumba panzvimbo yekutaura kwepanyama.
TCP Inoshanda Sei
TCP inonyora mapeti ayo akadai kuti anoverengwa. Izvi zvinoratidzawo kuti vane nguva yakatarwa yekusvika kune imwe nzvimbo (iyo inenge nguva yezana mamillisecondi inonzi nguva-kunze), uye zvimwe zvekugadzirira. Nepaketani imwe yakagamuchirwa, iyo inotumira iyo inoziviswa kuburikidza ne pakiti inonzi inobvuma. Zita rinotaura zvose. Kana mushure menguva-kunze, pasina kubvuma kunogamuchirwa, chinyorwa chinotumira imwe kopi yeyo inenge isina kurasikirwa kana kuti yakanonoka pakiti. Zvinyorwa-zve-mapepa mapepa hazvibvumirwi zvakare. Nenzira iyi, mapaketi ose anowanzounganidzwa zvakarongeka, asina mashumo uye mukati mekufungidzirwa kwakatemwa uye kunogamuchirwa.
TCP Kutaura
Kunyange zvazvo IP ine nzira yakakwana yekutaura nezvevanozivikanwa seIndaneti , TCP haina yekutaura yakadaro. Icho hachidi iwe chete. Iyo inoshandisa chete nhamba dzakapiwa nemichina iyo iri kushanda kuti ione kuti iri kupi kugamuchira uye kutumira mapepa emishandira ipi. Iyi nhamba inonzi mazambuko. Semuenzaniso, web browser vanoshandisa chikwata 80 cheTCP. Port 25 inoshandiswa kana email. Nhamba yefodhi inowanzobatanidzwa neIndaneti yebasa, semuenzaniso 192.168.66.5:80