rfc1431.txt

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      (d)  MS-Windows ..................................................

      (e)  Macintosh ...................................................

      (f)  Other .......................................................

   21. Does the DUA tend to emphasise or de-emphasise the DIT hierarchy?
    ....................................................................

   22. Describe the interface in your own terms (up to about 50 words)
    ....................................................................
    ....................................................................
    ....................................................................
    ....................................................................
    ....................................................................
    ....................................................................
    ....................................................................

6.  Schema

6.1  Object Classes and Attribute Types

   Some DUAs are tightly focussed on answering particular queries:  for
   example, white pages look-ups for information about people.  Others
   offer more general capabilities.  Please answer this question
   accordingly.

   23. If the DUA has a tight focus, state:

      (a)  The target object classes ...................................
        ................................................................

      (b)  The default attribute types .................................
        ................................................................



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      (c)  Other attribute types which may be configured.  This might be
           answered as, for example, "all barring photo and audio", or
           as a list of supported attribute types ......................
        ................................................................

   24. If the DUA has more general capabilities, state:

      (a)  State any object classes in X.521 which cannot be searched for
        ................................................................

      (b)  State any object classes in RFC1274 which cannot be searched
           for..........................................................
        ................................................................

      (c)  State any attributes in X.521 which cannot be displayed......
        ................................................................

      (d)  State any attributes in RFC1274 which cannot be displayed....
        ................................................................

6.2  DIT structure

   25. DUAs often have a default object class hierarchy (e.g., it might
       assume countries at the root of the DIT, organisations immediately
       under countries, and people somewhere under organisations.
       Describe the type of hierarchy which the DUA most closely accords
       to:

      (a)  Rigid .......................................................

      (b)  Rigid, but several hierarchies supported ....................

      (c)  Default hierarchy offered, but many hierarchies are supported
        ................................................................

      (d)  Default hierarchy offered, but DUA fully flexible ...........

      (e)  No default hierarchy, DUA fully flexible ....................

   26. If a default hierarchy is offered, please describe it ...........
    ....................................................................
    ....................................................................
    ....................................................................

   27. State any hierarchies, which are valid according to X.521's
       suggested DIT structure, but which cannot be queried (exclude
       hierarchies which cannot be queried because the DUA does not query
       for entries of particular object classes) .......................



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    ....................................................................

7.  Entering queries

   The term "querying" is used here as a generic term for finding an
   entry, whether it be as a simple look-up, or the prelude to a
   modification operation.

   28. Which best describes the query entry style?

      (a)  Form filling (user responds to a set of prompts) ............

           i.  Query specified first, then resolved ....................

          ii.  Query entry and resolution mixed ........................

         iii.  Both modes possible .....................................

      (b)  Queries entered as "user-friendly names" ..................

      (c)  Querying is by "navigating" around the DIT, the user
           searching and selecting .....................................

      (d)  Other (please describe) .....................................
        ................................................................

8.  Strategy for locating entries

   A number of strategies are employed by DUAs to find the entry the
   user is looking for.  These have implications for user-friendliness
   and performance.  For example, an interface which makes extensive use
   of search operations may be excellent at finding entries, but at the
   cost of being intolerably slow.

   29. Which of the following strategies most closely accords with the
       behaviour of the DUA?

      (a)  The DUA always uses search operations to find entries .......

      (b)  The DUA offers users a list of entries, and invites the user
           to select from the list .....................................

      (c)  The DUA only tries read operations (i.e., the DN must be
           exactly right) ..............................................

      (d)  The DUA tries read operations first, then searches for
           something similar if no entry can be found ..................




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      (e)  The DUA tries read operations first, then offers a list of
           possible entries if no entry can be found ...................

      (f)  User explicitly controls the X.500 operation which is invoked

      (g)  Other.  Please describe......................................
        ................................................................

   30. Does the DUA allow a user to "list" (either by the list
       operation or by a single level search operation) all the child
       entries of a node (notwithstanding administrative limits)?  .....

   31. Does the DUA follow aliases?  ...................................
       If so, does it do so:

      (a)  Always?  ....................................................

      (b)  Optionally?  ................................................

   32. Will the DUA optionally follow links to other entries by using
       attributes such as seeAlso and roleOccupant with a DN syntax?  ..

9.  Displaying results

   33. Are the strings used to describe attribute types freely and
       independently configurable?  [2] ................................

   34. Name any attribute types where the attribute values may be
       presented in local formats?  (For example, it may be possible to
       configure the display of telephone numbers so that local numbers
       are shown as extensions, rather than with the full international
       dialling code.)  [1 per attribute, up to a maximum of 4] ........
    ....................................................................

   35. Does the DUA allow for the display of more than one result at a
       time (showing attribute values other than the name of the entry)?
       If so, how many entries may be displayed in response to a single
       query?  [2 if feature provided] .................................
    ....................................................................

   36. Does the DUA support the notion of a quick synopsis, where a small
       core of attributes is retrieved initially, and a larger set is
       returned if required?  [2 if yes] ...............................

   37. What does the DUA do with attribute types it doesn't support in
       its sub-schema, but which have a standard syntax?  ..............





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   38. What does the DUA do with attributes which have are not in its
       sub-schema, and which have a non-standard syntax?

      (a)  Ignore them?  ...............................................

      (b)  Tell user, but don't display?  ..............................

      (c)  Display hex BER encoded value?  .............................

      (d)  Display in some other format?  ..............................

10.  Association Handling

   This section is concerned with how a DUA handles its association with
   the Directory.

   39. How/where is the access point to the Directory configured?  If
       more than one method, indicate which ways are possible.  [1 per
       method, up to maximum of 3]

      (a)  In a system-wide tailor file ................................

      (b)  In a per user tailor file ...................................

      (c)  As a run-time command line argument .........................

      (d)  Other.  Please describe .....................................
        ................................................................

   40. Does the DUA allow for automatic connection to a back-up DSA if
       the access point DSA is unavailable?  [2 if yes] ................

   41. Can the DUA keep connections open to more than one DSA at a time?
       [1 if yes] ......................................................
    ....................................................................

   42. Does the DUA keep an idle connection open to the DSA(s).  If not,
       describe the timeout strategy.  [1 if yes] ......................
    ....................................................................

   43. Does the DUA handle referrals automatically?  [2 if yes] ........
       If not:  does the DUA handle referrals at all?  [1 if yes] ......

   44. Does the DUA make use of asynchronous operations?

      (a)  Does the DUA bind asynchronously?  [2 if yes]................

      (b)  Are the operations handled asynchronously?  .................



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           If so, is this true for:

           i.  All operations?  [2 if yes] .............................

          ii.  Some operations?  [1 if yes] ............................

   45. Does the DUA use size and time limits by default?  [2 if no
       limits, or limits may be over-ridden] If so:  ...................

      (a)  What size limit is used?  ...................................

      (b)  What time limit is used?  ...................................

      (c)  Are these limits overridable?  ..............................

11.  Suitability for management

   This section is intended to establish the range of operations
   supported by the DUA and, in particular, whether it is suitable for
   management tasks.

   46. Is it possible to invoke all the operations in the Directory
       Abstract Service?  If not, say which operations it does use [2 if
       all] ............................................................
    ....................................................................

   47. Is the user given full control over the service controls?  If not,
       say which may be controlled, or none at all [2 if full, 1 if some
       control] ........................................................
    ....................................................................

   48. Is it possible to manage system attributes with the DUA? If so,
       indicate which DSA implementations for which this DUA provides
       management capabilities.  .......................................

      (a)  Knowledge [1]................................................

      (b)  Replication information [1] .................................

      (c)  Other .......................................................

   49. Access control notwithstanding, does the DUA allow the following?

      (a)  Attribute management [2 for all below, 1 for some]

           i.  Addition ................................................

          ii.  Modification ............................................



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         iii.  Deletion ................................................

      (b)  Entry management [2 for all below, 1 for some]

           i.  Addition ................................................

          ii.  Modification ............................................

         iii.  Deletion ................................................

          iv.  Renaming ................................................

12.  Query Resolution

   This section discusses the process of query resolution.  While two
   DUAs may both be able to resolve a query using the same information,
   one may do so much more quickly than the other.  Some DUAs may be
   more "economic" in their use of DAP operations to achieve the same
   results.  Some DUAs may find the correct results even when the users'
   input corresponds rather weakly to Directory names.  Three aspects of
   query resolution are measured:

    o  Does the DUA actually find the required entry?

    o  If the required entry is found, how many entries were returned as
       well?

    o  How "expensive" was the query in terms of underlying X.500
       operations, whether the query was resolved successfully or not?

   The following set of queries might all conceivably be resolved such
   that the author's Directory entry be found.  The queries are split
   into 2 groups:  the first group SHOULD pose no difficulties for a
   reasonable DUA; the second group are more problematic.  In each case,