Which two describe the correct requirements for non-disruptive IOS ISSU on Cisco Nexus 7000 Series
Switches? (Choose two.)

A.
updated kickstart and system images must be staged in bootflash on single-supervisor
switches

B.
updated kickstart and system images must be staged in bootflash on dual-supervisor
switches

C.
low version skew

D.
dual supervisors

E.
clock synchronization