Designing Cisco Data Center Infrastructure (DCID) — Question 64

A database administrator experiences delay when performing storage replication between primary and secondary data centers. The data centers are located 20 kilometers apart and are connected using a 500 Mbps link. The deployment was implemented using an FCIP tunnel and a pair of Cisco MDS 9250i Series Switches. The network engineer decided to enable QoS to prioritize replication traffic. Which QoS model must be used to resolve the performance issues?

Answer options

• A. Resource Reservation Protocol
• B. weighted round robin
• C. differentiated services
• D. strict priority queuing

Correct answer: C

Explanation

The correct answer is C, differentiated services, as it allows for the prioritization of specific types of traffic, such as replication traffic, ensuring that it receives the necessary bandwidth and reduced latency. The other options, while they serve different purposes in traffic management, do not specifically provide the necessary prioritization features required to effectively address the replication delays.