What are the three possible storage multi-pathing policies that you can set in ESX
Server? (Choose Three.)

A.
Persistent Binding

B.
Most Recently Used (MRU)

C.
Open Shortest Path First (OSPF)

D.
Round Robin

E.
Fixed

Explanation:
Fibre Channel SAN Configuration Guide ESX 4.0 ESXi 4.0 vCenter Server 4.0, page 62.
By default, VMware supports the following path selection policies. If you have a
third-party PSP installed on your host, its policy also appears on the list.
1. Fixed (VMware) The host always uses the preferred path to the disk when that path is
available. If the host cannot access the disk through the preferred path, it tries the
alternative paths. The default policy for active-active storage devices is Fixed.
2. Most Recently Used (VMware) The host uses a path to the disk until the path becomes
unavailable. When the path becomes unavailable, the host selects one of the alternative
paths. The host does not revert back to the original path when that path becomes
available again. There is no preferred path setting with the MRU policy. MRU is the
default policy for active-passive storage devices and is required for those devices.
3. Round Robin (VMware) The host uses an automatic path selection algorithm rotating
through all available paths. This implements load balancing across all the available
physical paths. Load balancing is the process of spreading server I/O requests across all
available host paths. The goal is to optimize performance in terms of throughput (I/O per
second, megabytes per second, or response times).
Part 5: Perform Basic Troubleshooting for HA/DRS and VMotion (36
questions).