While reviewing an existing network design, you are discussing the characteristics of different STP versions.
Which protocol minimizes unicast flooding during TCN in a Layer 2 switched network with many VLANs?
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A. STP
B. MST
C. PVRSTP
D. PVSTP+
Answer: D
Explanation:
To me answer is B MST
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Justification
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a0080094797.shtml
http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_40_se/configuration/guide/swstpopt.pdf
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By the way, part of that new 493Q 352-001 dumps are available here:
https://drive.google.com/open?id=0B-ob6L_QjGLpflFYOFdyS1ctQVc2X1cwT0d2R2dyZzBsb2hPaGw5V2Y5akx5QmxxYUdOOUU
Best Regards!
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