Before upgrading networking equipment like switches, a network administrator should first perform
some important preparation tasks. What should the network administrator include in the creation of
an upgrade policy? (Select two.)

A.
Read the release notes of the old operating system.

B.
Update network management software before deploying upgrades to network switches

C.
Verify remote access connectivity to the device to be upgraded.

D.
Make a copy of the old operating system.

E.
Test the upgrade in a lab network or a less important part of the network first.

Explanation: