WhichstatementdescribesthePFE?()
A. ThePFEcontrolstheREbyprovidingLayer2andLayer3forwardingtables
B. ThePFEimplementsadvancedservicessuchaspolicing,statelessfirewallfiltering,andclassofservice
C. ThePFEsendstraffictotheREforsystematicpacketforwarding
D. ThePFEreceiveshardwareandenvironmentalstatusmessagesfromtheRE