LIS508 lecture 8: tcp/ip and domains Thomas Krichel 2003-11-25 Structure IP TCP Domains discussion mostly based on Tanenbaum’s “computer networks” classic book…. Internet Protocol IP LAN protocols are not part of the Internet. IP operates on top of LANs to make them interoperable.
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2001111300 ; Serial
10800 ; Refresh after 3 hours
3600 ; Retry after 1 hour
640800 ; Expire after 1 week
86400 ; Minimum ttl of 1 day
openlib.org. IN NS wotan.liu.edu.
; primary server, the one which holds the authoritative info (this file)
openlib.org. IN NS utserv.mcc.ac.uk.
; secondary servers, At least one is necssesary.
openlib.org. IN A 18.104.22.168
mail.openlib.org. IN CNAME wotan.liu.edu.
openlib.org. IN MX 1 mail.openlib.org.
trabbi.openlib.org. IN TXT "hello world"
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