Video: DNS lus yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
DNS lus . Cov DNS raws tu qauv siv ib yam lus hom ntawv rau txhua qhov kev sib pauv ntawm cov neeg siv khoom thiab cov neeg rau zaub mov lossis ntawm cov servers. Cov DNS lus yog encapsulated tshaj UDP lossis TCP siv "qhov chaw nres nkoj paub zoo" 53. DNS siv UDP rau lus me dua 512 bytes (ntau thov thiab cov lus teb).
Hauv qhov no, DNS siv rau dab tsi?
Domain Name Servers ( DNS ) yog Internet sib npaug ntawm phau ntawv xov tooj. Lawv tuav cov npe ntawm cov npe sau npe thiab txhais lawv mus rau Internet raws tu qauv (IP) chaw nyob. Qhov no yog qhov tsim nyog vim tias, txawm hais tias cov npe sau tau yooj yim rau tib neeg nco qab, khoos phis tawj lossis tshuab, nkag mus rau cov vev xaib raws li IP chaw nyob.
Tsis tas li, kuv yuav ua li cas thiaj paub tias kuv tus DNS server yog dab tsi? Ntaus lossis muab tshuaj "ipconfig / all" hais kom ua (tsis muaj cov lus hais) rau hauv Command Prompt thiab nias "Enter" kom khiav nws thiab tau cov ncauj lus kom ntxaws txog lub network. Nrhiav tus IP chaw nyob ntawm lub computer hauv "IPv4 Chaw Nyob" teb. Nrhiav qhov tseem ceeb DNS IP chaw nyob hauv " DNS Servers " teb.
Ib yam li ntawd, DNS thiab piv txwv yog dab tsi?
DNS - Domain Name System (1) Luv rau Domain Name System (lossis Kev Pabcuam lossis Server), kev pabcuam hauv Is Taws Nem uas txhais cov npe sau rau hauv IP chaw nyob. Rau piv txwv , lub npe www. piv txwv .com tej zaum yuav txhais rau 198.105. 232.4 ib.
Dab tsi yog ob pawg tseem ceeb ntawm DNS lus?
DNS muaj ob hom ntawm lus : nug thiab teb. Ob leeg hom muaj tib hom ntawv. Cov lus nug lus muaj ib tug header thiab cov lus nug cov ntaub ntawv; cov lus teb lus muaj ib lub header, cov ntaub ntawv nug, cov ntaub ntawv teb, cov ntaub ntawv pov thawj, thiab cov ntaub ntawv ntxiv (saib daim duab 19.14).
Pom zoo:
Dab tsi yog zaj lus qhia nyob rau hauv Lus dab neeg ntawm Sleepy Hollow?
Sau: Washington Irving
Lub luag haujlwm ntawm kev sib txuas lus tsis yog lus yog dab tsi?
Lub luag haujlwm tseem ceeb ntawm kev sib txuas lus tsis yog lus yog qhia lub ntsiab lus los ntawm kev txhawb nqa, hloov pauv, lossis tsis sib haum xeeb ntawm kev hais lus. Kev sib txuas lus tsis yog lus kuj yog siv los cuam tshuam lwm tus thiab tswj kev sib tham
Dab tsi yog lub ntsiab lus ntawm cov lus tsis hais lus?
Tsis hais lus. Cov ntaub ntawv xav tau sib txuas lus hauv kev sib pauv kev sib raug zoo los ntawm cov cim qhia nrog cov lus siv hauv kev hais lus. Xws li cues muaj xws li lub cev lus, lub suab, inflexion, thiab lwm yam ntawm lub suab, hnav ris tsho, thiab lwm yam. Saib kuj tsis hais lus
Dab tsi cuam tshuam cov lus qhia hauv kev sib txuas lus tsis yog lus?
Cov lus qhia cuam tshuam yog qhov hais lus thiab tsis hais lus ntawm kev cuam tshuam (kev xav). Cov kev qhia no tuaj yeem yog los ntawm lub ntsej muag, kev piav tes piav taw thiab lub cev lus, ntim thiab lub suab ntawm lub suab, luag, quaj, thiab lwm yam. Kev cuam tshuam cov duab tuaj yeem hloov kho lossis cuav yog li ib qho tuaj yeem tshwm sim, thaum lawv hnov lwm (piv txwv li luag ntxhi thaum tu siab)
Dab tsi yog tus hais lus sau nws lub hom phiaj thiab dab tsi yog yam tseem ceeb uas yuav tsum nco ntsoov txog cov lus hais?
Cov neeg hais lus sau ntawv yog cov ntawv qhia uas tus neeg nthuav qhia siv thaum nthuav qhia qhov kev nthuav qhia. Lawv pab tus neeg nthuav qhia nco txog cov ntsiab lus tseem ceeb thaum muab kev nthuav qhia. Lawv tshwm sim ntawm tus swb thiab tuaj yeem pom tsuas yog los ntawm tus tshaj tawm thiab tsis yog cov neeg tuaj saib