Refer to the exhibit. The two exhibit devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? （）

单项选择题Refer to the exhibit:The technician wants to upload a new IOS in the router while keeping the existing IOS. What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash?（）

A.3MB
B.4MB
C.5MB
D.7MB
E.8MB

单项选择题Which command is used to display the collection of OSPF link states?（）

A.show ip ospf lsa database
B.show ip ospf link-state
C.show ip ospf neighbors
D.show ip ospf database

多项选择题What two things will a router do when running a distance vector routing protocol? （）

A.Send periodic updates regardless of topology changes.
B.Send entire routing table to all routers in the routing domain.
C.Use the shortest-path algorithm to the determine best path.
D.Update the routing table based on updates from their neighbors.
E.Maintain the topology of the entire network in its database.

单项选择题Which command displays CPU utilization?（）

A.show protocols
B.show process
C.show system
D.show version

单项选择题On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?（）

A.a router with subinterfaces configured on the physical interface that is connected to the switch
B.a router with an IP address on the physical interface connected to the switch
C.a switch with an access link that is configured between the switches
D.a switch with a trunk link that is configured between the switches