Referring to the exhibit, which two statement are true? (Choose two.)

Exhibit.

You have configured OSPF routing as shown in the exhibit. You notice that all interfaces have formed full adjacencies, with the exception of the interfaces connecting R3 and R4 with a status of 2Way.
What is the reason for this status?

Which two port security features use the DHCP snooping database for additional port security? (Choose two.)

Which statement is true about Layer 2 firewall filters on EX Series switches?

Which two statements are true about an EX2300 device? (Choose two.)