Designing Cisco Data Center Infrastructure (DCID) — Question 159

A network architect designs the iSCSI-based storage area network solution. The iSCSI datastore must be designed with high availability, minimal downtime, and no single point of failure. The requirement is to fail over I/O to alternate paths based on SCSI sense codes without reliance on network failures.

Which feature must be deployed to meet these requirements?

Answer options

• A. hardware-based flow control
• B. port security
• C. iSCSI multipath
• D. NIC teaming

Correct answer: C

Explanation

The correct answer is iSCSI multipath, as it allows for multiple paths to the storage, enabling failover based on SCSI sense codes. Hardware-based flow control and port security do not address the requirement for path redundancy and failover, while NIC teaming primarily focuses on link redundancy rather than storage I/O failover.