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Whats the real difference?

Discussion in 'Network Infrastructure' started by surfthegecko, Jan 30, 2010.

  1. surfthegecko

    surfthegecko Bit Poster

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    Hi,

    Whats the difference between Positive & Referral DNS Answers?
    They both involve the local DNS server using iterative queries.

    Any explanation would be appreciated.

    Thanks
     
  2. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

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    you can have four

    An authoritative answer: is a positive answer returned to the client and delivered with the authority bit set in the DNS message to indicate the answer was obtained from a server with direct authority for the queried name. i.e microsoft.com

    A positive answer: is the RRset that fits the queried DNS domain name and record type specified in the query message.

    A referral answer: A referral answer has additional data associated with it such as records other than what was queried.

    A negative answer: an authoritative server reported that the name does not exist in the DNS namespace.

    Can't remember the other one.
     
    Certifications: A+, N+, MCDST, Security+, 70-270
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  3. surfthegecko

    surfthegecko Bit Poster

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    Thanks Bruce, much appreciated.
    I think the biggest bit of info in all this to differenciate the two is that it contains additional data. Im assuming this means, any extra info it picked up along the way.
     
  4. greenbrucelee
    Highly Decorated Member Award

    greenbrucelee Zettabyte Poster

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    the extra data is like if the query has www in it (as in www.certforums.co.uk) instead of certforums.co.uk
     
    Certifications: A+, N+, MCDST, Security+, 70-270
    WIP: 70-620 or 70-680?

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