Preface Preface Fault Tolerance Speaker was Keith Marzullo , Department of Computer Science and Engineering University of California, San Diego.
Separate units do their computations and the result is decided upon by majority vote.
Detection and recovery requires less replication than masking. Detecting errors is easier than correcting them. All effects of all operations of a transaction are committed, or none of them are. The question remains whether this expensive, complex protocol is suited for mobile agents. An alternative would be the so-called Norwegian Army protocol .