May 2009
Intermediate to advanced
882 pages
22h 55m
English
Content preview from Cisco® Network Professional's: Advanced Internetworking Guide
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3.7. Answers to Review Questions
B. The original version of STP is defined in the IEEE 802.1d standard.
C. The BID is used by the switches to determine the root bridge; the lowest BID is the winner of the election.
A. The path cost is used to determine the root port; the lowest total path cost for all of a switches ports becomes the root port.
C. The Cisco-proprietary feature of PortFast allows a switch port to move immediately to forwarding without having to transition through any other states.
A. The BPDU (Bridge Protocol Data Unit) is sent every 2 seconds by switches and contains the information to determine the topology.
C. UplinkFast was added by Cisco, and allows the loss of root port to be converged around in about 5 seconds.
D. Root Guard ...
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