Dns

6

Transcript of Dns

Page 1: Dns
Page 2: Dns

INLEDNING:

1983 AV PAUL MOCKAPETRIS

DOMAIN NAME SYSTEM

FÖRENKLAD ADRESSERING AV DATORER PÅ IP-NÄTVERK

KOPPLA DOMÄNER TILL IP-ADRESSER

ARPANET KOPPLING VIA HOSTS.TXT MED LISTOR PÅ ALLA

DATORER SOM SKA KOMMUNICERAS MED.

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SÅ FUNGERAR DNS

EN HIRARKISK DATABAS

INFORMATION LAGRAD I TRÄDSTRUKTUR

ENKLARE ATT HITTA RELEVANT DATA

DATAN ÄR UTSPRID ÖVER MASSOR MED SERVRAR

FÖRDELAR ANSVAR FÖR DELAR AV DATABASER= STABILT

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DNS TRÄDET

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ROTTRÄD

Dela ut uppgifter till servrarna

NIVÅ 1TOPPDOMÄN EX .SE

NIVÅ 2 UNDERDOMÄN EX WIKISKOLA.SE

NIVÅ 3 UNDERDOMÄN EX WWW.WIKKISKOLA.SE

/.../

NIVÅ 127 127 DELAR MED PUNKTER EMELLAN

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ROTSERVRAR

13 ST ROTSERVRAR VÄRLDEN ÖVER

LITE LAGRAD DATA

UTAN ROTSERVRAR INGET INTERNET.


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