{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

hw7 - CS 217A Homework 7 Due on Lixia Zhang March 6 2011 CS...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CS 217A: Homework 7 Due on Lixia Zhang March 6, 2011
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
CS 217A (Lixia Zhang March 6, 2011): Homework 7 Problem 1 Problem 1 From RFC 1034, DNS domain names are composed of labels . This allows the DNS hierarchy to let multiple “nodes” reuse the same label (such as “www”) at different points in the tree. Are there any labels that nodes are not allowed to assign to their data? If so, what are they? Problem 2 What is the difference between an “absolute” domain name and a “relative” domain name? Problem 3 When a DNS resolver queries a name server, does the case of the domain name affect the response? Further- more, if the query results in multiple RRs, should the resolver expect that they are sorted in any specific way? Problem 4 Some domain names have multiple RRs associated with them (such as multiple A RRs for webservers). What (if any) type of RR requires that no other RRs of the same name exist and why? Problem 5 From RFC 1034, after making all of the “cuts” to the DNS name space, how does one define a DNS zone? Problem 6
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}