Q. 76
Which three basic switch functions increase available bandwidth on the network? (Choose three)
A. Loop avoidance.
B. Address learning
C. Hop count limiting
D. Broadcast filtering
E. Packet forward/filtering.
Answer: A, B, E
Explanation: A switch has three basic functions, which increase the available bandwidth on a network. These
functions are address learning, forward/filter decision, and loop avoidance,
Incorrect Answers:
C: Although a switch functions a lot like a multi-port bridge, a switch does not affect – nor is affected by – the
hop count.
D: By their very design Broadcast are meant to be seen by everyone.（这句话没明白什么意思？！！帮忙解释一下）
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 146-152.
troy ed3上keypoint指出三个功能是packet forward/filter , and loop avoidance,broadcast filtering~~~
我在另一本教材上的习题上看到的是选
a.routing loop avoidance
c.broadcast isolation（隔离）
e.forward/filter
那么这题到底选什么？？？为什么广播过滤不对？？
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