CCNA Questions And Answers

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LAN segmentation increases the number of collision domains, which increases the available bandwidth for each user in a collision domain. Chapter: 6 279. What type of device enables high-speed data exchange? A. Hub B. Bridge C. Switch D. Router Answer: C Hubs reduce data exchange rates due to flooding, a bridge does segment the network but relies on software, a switch segments and uses an ASIC for fast switching and a router must use a routing table lookup which is slower than a switch. Chapter: 6 280. What is the bandwidth of one ISDN BRI B channel? A. 16 KBPS B. 128 KBPS C. 64 KBPS D. 1.5 MBPS Answer: C Each B channel has a bandwidth of 64K, when combined together your ISDN circuit will provide 124K Chapter: 6 281. Full-duplex requires a _____ to _____ connection when only two nodes are present. A. Point, Multipoint B. Multipoint, Point C. Multipoint, Multipoint D. Point, Point Answer: D Full-duplex must be a point to point connection. This allows one set of wires to be used for sending and one set for receiving. Chapter: 6 282. What is the base in 100baseT?