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Final Exam

Final Exam

Question $7$

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Question text

Consider how two machines in a distributed system behave. Both have clocks that should be ticking at $800$ times per millisecond. One of them does, but the other just ticks once every $760$ milliseconds. What is the maximum clock skew that can occur if UTC updates are received once per minute?

Question $7$Answer

a$.$

The maximum clock skew that can occur if UTC updates are received once per minute $=0\mathrm{.}04$ x $60$ sec$,$ or $2400$ msec

b$.$

None of these

c$.$

The maximum clock skew that can occur if UTC updates are received once per minute $=0\mathrm{.}03$ x $60$ sec$,$ or $1800$ msec

d$.$

The maximum clock skew that can occur if UTC updates are received once per minute $=0\mathrm{.}02$ x $60$ sec$,$ or $1200$ msec

e$.$

The maximum clock skew that can occur if UTC updates are received once per minute $=0\mathrm{.}05$ x $60$ sec$,$ or $3000$ msec