Sun XDR marshals data by converting it into a standard big-endian form before transmission.
Discuss the advantages and disadvantages of this method when compared with CORBA’s CDR.
What will be an ideal response?
The XDR method which uses a standard form is inefficient when communication takes place between pairs of
similar computers whose byte orderings differ from the standard. It is efficient in networks in which the byte-
ordering used by the majority of the computers is the same as the standard form. The conversion by senders
and recipients that use the standard form is in effect a null operation.
In CORBA CDR senders include an identifier in each message and recipients to convert the bytes to their
own ordering if necessary. This method eliminates all unnecessary data conversions, but adds complexity in
that all computers need to deal with both variants.
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