DEA-1TT5 Replication Technologies 3

Question 1

Which factor primarily limits the maximum effective distance for synchronous replication?

Accepted Answer

Network round-trip latency between source and target sites

Answer

Storage capacity available at the target site

Answer

Number of volumes included in the replication set

Answer

Total bandwidth of the WAN connection between sites

Question 2

What is 'host-based replication'?

Accepted Answer

Replication performed by software running on the application or OS layer of the host server

Answer

Replication managed entirely by the storage array's internal firmware

Answer

Replication offloaded to the SAN fabric switches as the replication engine

Answer

Replication orchestrated by a dedicated network appliance between sites

Question 3

What does Recovery Time Objective (RTO) measure in a replication and disaster recovery context?

Accepted Answer

The maximum tolerable time to restore operations after a disaster

Answer

Replication Transfer Operations per second at the target site

Answer

The maximum acceptable distance between source and recovery target

Answer

Replication Throughput Optimization measured in MB/s

Question 4

What is the purpose of 'splitting' or 'fracturing' a replication pair?

Accepted Answer

To disconnect the target from the source so the replica can be accessed independently

Answer

To divide replication bandwidth evenly across multiple WAN paths

Answer

To separate metadata replication from data block replication for efficiency

Answer

To pause replication traffic during peak production hours without data loss

Question 5

Which type of replication captures the state of source data at a specific moment and sends that snapshot image to the target?

Accepted Answer

Point-in-time (PIT) replication

Answer

Continuous replication

Answer

Delta replication

Answer

Journal-based replication

Question 6

What is 'bi-directional replication' in a two-site storage configuration?

Accepted Answer

A configuration where each site acts as both a source and a target for the other site

Answer

Replication that uses two independent network paths between sites for redundancy

Answer

A replication mode that makes two sequential passes — one for metadata and one for data

Answer

A mode that automatically switches between synchronous and asynchronous based on latency

Question 7

Which metric best quantifies the performance overhead that replication imposes on the production storage system?

Accepted Answer

Replication I/O overhead — additional IOPS and bandwidth consumed by replication traffic

Answer

Replication factor — ratio of target capacity to source capacity

Answer

Recovery Point Objective (RPO) — tolerable data loss window

Answer

Target Recovery Time (TRT) — time to activate the replica after a failover