Sequential consistency is an important data-centric consiste…

Sequential consistency is an important data-centric consistency model which was first defined by Lamport in the context of shared memory for multiprocessor systems. Which of the following options correctly explain the definition of the sequential consistency? Select all that apply.

Review the diagram. Implementing causal consistency requires…

Review the diagram. Implementing causal consistency requires keeping track of which processes have seen which writes. There are many subtle issues to take into account. Which of the following options correctly describe the possible outcome for processes P3 and P4? Select all that apply. Diagram P1: W(x)a P2:               R(x)a W(y)b P3:                                           R(y)b R(x)? P4:                                              R(x)a R(y)?