www.bbcnoun.com.ng CIT423 9/10 _____________ was developed to take advantage of these high data rates and low error rates Frame Relay The following devices operate at the OSI Model Physical Layer except Router ATM uses fixed length packets, called ___________ Cell What is the full meaning of ATM? Asynchronous Transfer Mode Which device incorporates bridge functions as well as point– to–point dedicated connections. Switch Frame relay uses variable length packets called________ Frame Network is defined as less than 50km and provides regional connectivity_____________ Metropolitan Area Network (MAN) ____________are needed to amplify the weakened signal. Repeaters In a _________ topology, every device has a dedicated point to point link to every other device. Mesh Bridges work at the ________________of the OSI model. Data Link Layer