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operating system questions

16.7 Process migration within a heterogeneous network is usually impossible, given the differences in architectures and operating systems. Describe a method for process migration across different architectures running:
a. The same operating system
b. Different operating systems

16.12 What is the difference between computation migration and process migration? Which is easier to implement, and why?

18.2 The logical clock timestamp scheme presented in this chapter provides the following guarantee: if event A happens before event B, then the timestamp of A is smaller than the timestamp of B. Note, however, that we cannot order two events based only on their timestamps. The fact that an event C has a timestamp that is smaller than the timestamp of event D does not necessarily mean that event C happened before event D; C and D could be concurrent events in the system. Discuss ways in which the logical clock timestamp scheme could be extended to distinguish concurrent events from events that can be ordered by the happened-before relation.
19.1 Identify whether hard or soft real-time scheduling is more appropriate in the following environments:
a. Thermostat in a household
b. Control system for a nuclear power plant
c. Fuel economy system in an automobile
d. Landing system in a jet airliner

19.4 Under what circumstances is rate-monotonic scheduling inferior to earliest-deadline-first scheduling in meeting the deadlines associated with processes?


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