Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated, but they are unable to communicate. The Atlanta router is known to have the correct configuration.Given the partial configurations, identify the fault on the Brevard router that is causing the lack of connectivity？（）A.incompatible IP addressB.insufficient bandwidthC.incorrect subnet maskD.incompatible encapsulationE.link reliability too lowF.IP/TCP closed
Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated, but they are unable to communicate. The Atlanta router is known to have the correct configuration.Given the partial configurations, identify the fault on the Brevard router that is causing the lack of connectivity？（）
A.incompatible IP address
B.insufficient bandwidth
C.incorrect subnet mask
D.incompatible encapsulation
E.link reliability too low
F.IP/TCP closed
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单选题Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated, but they are unable to communicate. The Atlanta router is known to have the correct configuration.Given the partial configurations, identify the fault on the Brevard router that is causing the lack of connectivity？（）A incompatible IP addressB insufficient bandwidthC incorrect subnet maskD incompatible encapsulationE link reliability too lowF IP/TCP closed
问答题Two Cisco routers are connected to each other and are enabled CDP. Serial line is up，protocol is also up but cdp neighbor not working. What layer of the OSI model does the problem most likely exist？