Summary:Frame Relay encapsulation seems simple enough, but for your CCNA and CCNP exams, you've got to know vital details that are often overlooked.  Learn these details from Chris Bryant, CCIE #12933. Keywords:ccna, ccnp, cisco, certification, frame, relay, ietf, pvc, router, serial, interface, exam, pass Article Body:When you're studying to pass the Cisco CCNA and CCNP certification...