When managing a NetScreen device via the WebUl and performing an image upgrade, from which hardware component can the ScreenOS image be loaded?

A.
TFTP server

B.
PC local disk Internal Flash

C.
PCMCIA Card

D.
Compact Flash Card

Explanation:
You can upgrade or downgrade the ScreenOS in three ways :
Web User Interface (WebUI)
Command Line Interface (CLI)
Boot Loader or ScreenOS Loader
To use the WebUI, you must have:
Root or read-write privileges to the NetScreen device Network access to the NetScreen device from your computer An Internet browser installed on your computer
The new ScreenOS firmware (downloaded from the Juniper Networks Web site and saved locally on your computer)
To use the CLI, you must have:
Root or read-write privileges to the NetScreen device A console connection or Telnet access to the NetScreen device from your computer A TFTP server installed on your computer
The new ScreenOS firmware (downloaded from the Juniper Networks Web site and saved to the TFTP
server directory on your computer)
To upgrade or downgrade through the boot loader, you must have:
Root or read-write privileges to the NetScreen device A TFTP server installed on your computer or on your local network An Ethernet connection from your computer to the NetScreen device (to transfer data, namely from the
TFTP server on your computer)
A console connection from your computer to the NetScreen device (to manage the NetScreen device)
The new ScreenOS firmware saved to the TFTP server directory on your computer