Which of the following statements about the OSPF area in the network (Area) is correct? (multiple choice)

SPX belongs to the ______ of the OSI reference model.

Two empty-configured MSR routers are directly connected back-to-back through their respective WAN Serial1/0 interfaces, and their interconnection network segment is 192.0.0.0/24.
At the same time, the two routers are connected to their respective LAN segment users through their respective GigabitEthernet0/0:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
Configure RIPv1 on the two routers, and now both routers have learned the RIP route of the opposite LAN segment. So which of the following statements are correct?

The PC is connected to the port E1/0/2 of the switch SWA, the IP address is 10.1.1.1, and the MAC address is 00-01-02-01-21-23. To ensure network security, you need to configure MAC+IP+ port binding on port E1/0/2.
Which of the following commands is correct?

After executing the display command on the switch SWA, the switch output is as follows:
<Switch>display link-aggregation summary
Aggregation Interface Type:
BAGG - Bridge-Aggregation, RAGG - Route-Aggregation
Aggregation Mode: S - Static, D - Dynamic
Loadsharing Type: Shar - Loadsharing, NonS - Non-Loadsharing
Actor System ID: 0x8000, 000f-e267-6c6a
AGG AGG Partner ID Select Unselect Share
Interface Mode Ports Ports Type
-------------------------------------------------- --------------------
BAGG1 S none 3 0 Shar
It can be judged from the above output ______. (Multiple choice)