Before you upgrade an ESXi host:
A. update the ESXi restore CD with the current ESXi image
B. save the current ESXi image to another ESXi server
C. copy the embedded ESXi image to a USB flash drive
D. save the ESXi configuration using vicfg-cfgbackp s from the vCLI
Answer:D
Before you upgrade an ESXi host:
A. update the ESXi restore CD with the current ESXi image
 B. save the current ESXi image to another ESXi server
 C. copy the embedded ESXi image to a USB flash drive
 D. save the ESXi configuration using vicfg-cfgbackp s from the vCLI
