Exercises 195 4. Brian Pawlowski, Spencer Shepler, Carl Beame, Brent Callaghan, Michael Eisler, David Noveck, David Robinson, and Robert Turlow, "The NFS Version 4 protocol", Proceedings of Second International SANE Conference, May 2000, Maastricht, The Netherlands. exerCISeS 4.1 When modularity between a client and a service is enforced, there is no way for errors in the implementation of the service to propagate to its clients. True or False? Explain. 1995­1­1d 4.2 Chapter 1 discussed four general methods for coping with complexity: modular- ity, abstraction, hierarchy, and layering. 4.2a Which of those four methods does client/service use as its primary organizing scheme? 4.2b Which does remote procedure call use? Explain.