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6 browser uses ip to request web page from xcoms

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Unformatted text preview: P to request web page from x.com’s website server. 7. x.com’s website server sends web page to browser. 8 Image by MIT OpenCourseWare. more details recursive and non-recursive lookups › recursive: server fully answers query › non-recursive: sends back name of next server glue records › query returns name of server, so need to resolve that › what if server is in domain being queried? › glue record: provides IP address is this case about 40 record types › A: most common; returns IP for domain name › CNAME: alias to another domain name 9 things to know about caching › name server holds records it heard about from others › no explicit invalidation; records expire › so causes delay when name changes replication › 80 replicas of root name server (2008) registrars › decentralized since 1999 › registrar causes delay too where can I learn more? › 6033! 10 Educause hacked (January 2013) © source unknown. All rights reserved. This content is excluded from our Creative Commons license. For more information, see http://ocw.mit.edu/fairuse. 11...
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This document was uploaded on 03/18/2014 for the course EECS 6.170 at MIT.

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