Unformatted text preview: same access code, there would be no way to tell which frame belonged to which piconet. In eﬀect, the two piconets would be merged into one big piconet instead of two separate ones. 4.35 [5 pt] An ACL channel is asynchronous, with frames arriving irregularly as data are produced. An SCO channel is synchronous, with frames arriving periodically at a well-deﬁned rate. 4.39 [5 pt] The simplest choice is to do nothing special. Every incoming frame is put onto the backplane and sent to the destination card, which might be the source card. In this case, intracard traﬃc goes over the switch backplane. The other choice is to recognize this case and treat it specially, sending the frame out directly and not going over the backplane. See also p. 282 of the textbook. 4.40 [5 pt] The worst case is an endless stream of 64-byte (512-bit) frames. If the backplane can handle 10 × 10 9 = 10 10 bps, the number of frames it can handle is 10 10 / 512. This is 1 . 953 × 10 7 frames/sec. 4-1...
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- Fall '07
- Computer Networks, Bit rate, access code, constant bit rate