I-Domain Name System (i-DNS) iguqulela igama le-intanethi kunye namagama ezamkeli kwii dilesi ze-IP kunye nangoko.
Kwi-intanethi, i-DNS iyaguqukela ngokuthe ngqo phakathi kwamagama esiwafake kwi-bar ye-bar yekheli lokubhaliza kwiWeb kwiithalesi ze-IP zamaseva eWeb. Iinkampani ezinkulu zisebenzisa iDNS ukulawula intranet yazo yenkampani. Amanethiwekhi asekhaya asebenzisa i-DNS xa ufinyelela kwi-Intanethi kodwa ungayisebenzisi ukulawula amagama weekhomputha zekhaya.
Indlela iDNS isebenza ngayo
I-DNS yinkqubo yokunxibelelana kwenethiwekhi yomxhasi / yomncedisi : abaxhasi be-DNS bathumela izicelo kwaye bafumana iimpendulo ezivela kwiiseva ze-DNS . Izicelo eziqukethe igama, ezenza ukuba idilesi ye-IP ibuyiselwe kwi-server, ibizwa ngokuba yi- DNS lookups phambili. Izicelo eziqulethe idilesi ye-IP kwaye ezenza igama, elibizwa ngokuba yi- DNS lookups, ixhaswa kwakhona. I-DNS isebenzisa isiseko sokusasazwa ukugcina eli gama kunye nolwazi oludlulileyo lweedilesi kuwo wonke umkhosi woluntu kwi-Intanethi.
Idatha yeDNS ihlala kwi-hierarchy yamaseva ekhethekileyo egciniweyo. Xa abathengi bafana nezikhangeli ze-Web zikhupha izicelo ezibandakanya amagama anikezelwe kwi-Intanethi, isiqwenga sesofthiwe (esivame ukufakwa kwinkqubo yokusebenza yenethwekhi) ebizwa ngokuba yi- DNS resolver kuqala udibanisa iseva ye-DNS ukucacisa idilesi ye-IP yomncedisi. Ukuba iseva ye-DNS ayinayo imephu efunekayo, iya kuthi, ibuye isithumele isicelo kwi-DNS iseva eyahlukileyo kwinqanaba eliphezulu elilandelayo kwi-hierarchy. Emva kokuthumela imiyalezo emininzi kunye nokuthumela imiyalezo kwi-DNS, idilesi ye-IP yomninimzi onikezelwe ngokugqibeleni ifike kwi-resolver, ekugqibeleni igqiba isicelo kwi- Intanethi ye-Intanethi .
I-DNS yokongezelela ibandakanya inkxaso yokucela i- caching kunye ne- redundancy . Uninzi lweenkqubo zokusebenza zenethiwekhi zixhasa ukucwangciswa kwamaseva aseprayimari, asekondari, nakwimfundo ephakamileyo ye-DNS, nganye leyo inokuthi isebenzise izicelo zokuqala ezivela kubaxumi.
Ukusetha i-DNS kwiiNdawo zoLuntu kunye neeNethwekhi zaseKhaya
Ababoneleli ngeenkonzo ze-intanethi (ii-ISPs) balondoloza ii-server zabo ze-DNS kwaye basebenzise iDHCP ukuba bazilungiselele ngokuzenzekelayo amanethiwekhi abo abathengi, isabelo se-DNS se-Automatic sisusa amakhaya omthwalo woqwalaselo lwe-DNS. Abalawuli benethiwekhi yasekhaya abafunwa ukuba bagcine izicwangciso zabo ze-ISP, nangona kunjalo. Abanye bakhetha ukusebenzisa enye yeenkonzo ze-intanethi ze-Intanethi ye-Intanethi kunoko. Iinkonzo zikaRhulumente ze-DNS zenzelwe ukunikela ngokubhetele ukusebenza kunye nokuthembeka malunga nokuba yi-ISP eqhelekileyo inokunikela ngokufanelekileyo.
Imizila yasetrafini yasemakhaya kunye nezinye izixhobo zesango lokugcina izitoreli ze-DNS eziprayimari, ezisekondari nakwi-tertiary kwi-intanethi kwaye zinikezele kwiinkqubo zabaxhasi njengoko zifunwa. Abalawuli bangakhetha ukufaka iilelesi ngesandla okanye bafumane kwi-DHCP. Iile dilesi ziyakwazi ukuhlaziywa kwisicatshulwa somthengi ngokusebenzisa indlela yokusebenza yenkqubo yamamenyu.
Iingxaki ezine-DNS ziyakwazi ukuba ziphakathi kwaye kunzima ukujongana neengxaki ngokunikezelwa kwendalo yazo. Abaxhasi banako ukuxhuma kwinethiwekhi yabo yangaphakathi xa iDNS iphukile, kodwa abayi kukwazi ukufikelela kumadivayisi akude ngegama labo. Xa isetyenziselwano somnatha weskrini somsebenzisi sibonisa idilesi ze-DNS idilesi ye- 0.0.0.0 , ibonisa ukungaphumeleli nge-DNS okanye ngokucwangciswa kwayo kwinethiwekhi yendawo.