Why is computer clock synchronization necessary? Describe the design requirements for a system
to synchronize the clocks in a distributed system.
What will be an ideal response?
See Section 14.1for the necessity for clock synchronization.
Major design requirements:
i) there should be a limit on deviation between clocks or between any clock and UTC;
ii) clocks should only ever advance;
iii) only authorized principals may reset clocks
In practice (i) cannot be achieved unless only benign failures are assumed to occur and the system is
synchronous.
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