What is the default action for an SRX device in transparent mode to determine the outgoing
interface for an unknown destination MAC address?
A.
Perform packet flooding.
B.
Send an ARP query.
C.
Send an ICMP packet with a TTL of 1.
D.
Perform a traceroute request.
Explanation:
Reference: http://www.juniper.net/techpubs/software/junos-security/junos-security95/junossecurity-swconfig-interfaces-and-routing/understand-l2-forwarding-tables-section.html
Right Answer 🙂
http://chimera.labs.oreilly.com/books/1234000001633/ch06.html#mac_address_learning
By default, the SRX simply floods the packet out all interfaces in the same VLAN except the port on which the packet arrived. This is how a switch normally functions when it doesn’t know the destination MAC address.