Editing Domain Name System (section)

===Question section===
The question section has a simpler format than the resource record format used in the other sections.  Each question record (there is usually just one in the section) contains the following fields:

{| class="wikitable"
|+ Resource record (RR) fields
|-
! Field !! Description !! Length ([[Octet (computing)|octets]])
|-
| NAME || Name of the requested resource || Variable
|-
| TYPE || Type of RR (A, AAAA, MX, TXT, etc.) || 2
|-
| CLASS || Class code || 2
|}

The domain name is broken into discrete labels which are concatenated; each label is prefixed by the length of that label.<ref>James F. Kurose and Keith W. Ross, Computer Networking: A Top-Down Approach, 6th ed. Essex, England: Pearson Educ. Limited, 2012</ref>