DEA-1TT5 Replication Technologies

Question 1

What is the primary purpose of storage replication in an enterprise environment?

Accepted Answer

To create copies of data on separate storage systems for availability and disaster recovery

Answer

To increase storage capacity at the primary site

Answer

To improve read performance by distributing data across arrays

Answer

To reduce storage costs through deduplication

Question 2

Which type of replication requires the write operation to be confirmed on BOTH source and target before acknowledging success to the host?

Accepted Answer

Synchronous replication

Answer

Asynchronous replication

Answer

Delta replication

Answer

Cascade replication

Question 3

What does Recovery Point Objective (RPO) measure in the context of replication?

Accepted Answer

The maximum acceptable amount of data loss measured in time

Answer

The maximum time allowed to restore a system after a failure

Answer

The geographic distance allowed between source and target sites

Answer

The bandwidth required to sustain replication traffic

Question 4

In asynchronous replication, when is the write operation acknowledged to the host?

Accepted Answer

After the data is written locally, before propagation to the remote site

Answer

Only after the remote target confirms receipt of the data

Answer

Simultaneously as data is written to both source and target

Answer

Only during scheduled batch replication windows

Question 5

Which replication topology involves a single source replicating to multiple separate target sites?

Accepted Answer

Fan-out replication

Answer

Cascade replication

Answer

Fan-in replication

Answer

Bi-directional replication

Question 6

What is a replication 'journal' used for in continuous data protection (CDP)?

Accepted Answer

A chronological record of write operations that enables point-in-time recovery

Answer

A log file that records all failed replication attempts for troubleshooting

Answer

A database catalog of all replicated volumes and their current status

Answer

A scheduled performance report for the replication infrastructure

Question 7

What is the main performance disadvantage of synchronous replication compared to asynchronous replication?

Accepted Answer

Write latency increases because the host waits for remote acknowledgment on every write

Answer

Higher storage capacity requirements at the target site

Answer

Inability to replicate across more than two sites simultaneously

Answer

Requirement for identical storage hardware models at both sites