Which two statements are true regarding proxy ARP? (Choose two.)
A.
Proxy ARP is enabled by default.
B.
Proxy ARP is not enabled by default.
C.
JUNOS security devices can forward ARP requests to a remote device when proxy ARP is enabled.
D.
JUNOS security devices can reply to ARP requests intended for a remote device when proxy ARP is enabled.
Answer B D
Without proxy ARP, if an interface receives an ARP request for an address other than its own, it ignores the packet. It assumes the packet is meant for another device attached to the same broadcast media. Using proxy ARP, the interface acts as a proxy for the destination by replying to ARP requests on behalf of the intended destination. Packets destined for the intended destination then travel to the proxying device, which can then forward the packets to the actual destination.