Refer to the exhibit.

Which action must be taken to ensure that router A is elected as the DR for OSPF area 0?

Refer the exhibit.

What is the cause of poor performance on router R19?

Refer to the exhibit Routers R1 and R2 have been configured with their respective LAN interfaces The two circuits are operational and reachable across WAN Which command set establishes failover redundancy if the primary circuit goes down?

Refer to the exhibit. All routers In the network are configured. R2 must be the DR. After the engineer connected the devices, R1 was elected as the DR. Which command sequence must be configured on R2 to be elected as the DR in the network?

What is the function of a hub-and-spoke WAN topology?