The preferred path to your VMware ESX host failed. Which native multi-pathing policy will revert to the
preferred path when it is restored?

A.
Fixed only

B.
MRU only

C.
Round-robin

D.
Bath Fixed and MRU

Explanation:
Native ESX/ESXi Multipath is managed via the configuration of a failover policy. Policy options are:
• MRU (Most Recently Used) – uses last active path, and does not fail back when a path is restored
• Fixed (Preferred path) – reverts back to preferred path when it is restored to service
• Round Robin – rotates the path selection between all available paths and enables basic load balancing across
the paths.
This algorithm is not adaptive, so it will flip from one channel to the other with no regard for the work load unlike
PowerPath, nor is it responsive to queue depth.
NotE. Prior to vSphere, there was no way to load balance a LUN indigenously and customers needed tostatically distribute LUNs across paths.