Using the CLI, if the startup copy of the ScreenOS on a NS-204 is corrupted, from which two (2) alternate locations can an image be loaded?

A.
ROM

B.
TFTP server

C.
Internal Flash

D.
PCMCIA Card

E.
Compact Flash Card

Explanation:
There may be times when your NetScreen firewall runs into problems from which you cannot recover.
In cases where you need a backup copy of a correctly functioning configuration file, you can use the configuration rollback feature. The configuration rollback feature allows you maintain a backup configuration
file that you can use in case your primary configuration file, saved or running, runs into problems.This is a great feature that can get you out of tight squeezes if you run into issues.The configuration rollback cannot be performed from the WebUI. To restore your system to a functional configuration you need to have serial console access to the system and a TFTP server on the local network to the device. During the boot process a prompt will be displayed four times.The prompt will say, "Hit any key to run loader". Press any key and you will be asked for the file you want to load, the IP address you want to assign to your device, and the IP address of the TFTP server. A compact flash card can also be used for storage of system images, configuration files, keys, and logs. The NetScreen device automatically detects the presence of a flash card and records the event log to it.