Replication for performance is important when thedistributed system needs to scale in numbers and ge

Replication for performance is important when thedistributed system needs to scale in numbers and geographicalarea.

    a. true

    b. false
Using synchronization variables to partly defineconsistency leads to what is called weakconsistency.

    a. true

    b. false
With mirrored Web sites and with cluster-based Web sitesthere generally are only a few replicas, which are more or lessstatically configured.

    a. true

    b. false
In many situations, it is important that write operationsare propagated in the correct order to all copies of the datastore. This property is expressed in monotonic-writeconsistency.

    a. true

    b. false
Widely used methods for improving distributed performanceinclude:

    a. Replication

    b. Caching

    c. Both replication and caching

    d. Neither replication nor caching. Attached

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