Replication for performance is important when the distributed system needs to sc

Question

Replication for performance is important when the distributed system needs to scale in numbers and geographical area.
    a. true
    b. false

Using synchronization variables to partly define consistency leads to what is called weak consistency.
    a. true
    b. false

With mirrored Web sites and with cluster-based Web sites there generally are only a few replicas, which are more or less statically configured.
    a. true
    b. false

In many situations, it is important that write operations are propagated in the correct order to all copies of the data store. This property is expressed in monotonic-write consistency.
    a. true
    b. false

Widely used methods for improving distributed performance include:
    a. Replication
    b. Caching
    c. Both replication and caching
    d. Neither replication nor caching.

Explanation / Answer

Q1- Replication for performance is important when the distributed system needs to scale in numbers and geographical area.

Ans- True

Q2-Using synchronization variables to partly define consistency leads to what is called weak consistency.

Ans- True

Q3- With mirrored Web sites and with cluster-based Web sites there generally are only a few replicas, which are more or less statically configured.

Ans- True

Q4-In many situations, it is important that write operations are propagated in the correct order to all copies of the data store. This property is expressed in monotonic-write consistency.

Ans- True

Q5 Widely used methods for improving distributed performance include:

Ans- a. Replication

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