What should be done prior to backing up an IOS image to a TFTP seiver? (Choose three.)

A.
Make sure that the seiver can be reached across the network.

B.
Check that authentication for TFTP access to the seiver is set.

C.
Assure that the network seiver has adequate space for the IOS image.

D.
Verify file naming and path requirements.

E.
Make sure that the seiver can store binary files.

F.
Adjust the TCP window size to speed up the transfer.

Explanation:
This question is to examine the Cisco IOS management.
Prior to backing up an IOS image to a TFTP seiver, the following actions should be taken: Ensure the accessibility between the TFTP seiver and the device.