单选题What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）Aimmediately after receiving the first packet on the shared tree for a given （S，G）Bafter receiving over 1 kb/s traffic onthe shared tree for a given （S，G）C10 seconds after receiving the first packet on the shared tree for a given （S，G）D30 seconds after receiving the first packet on the shared tree for a given （S，G）Eafter receiving over 10 kb/s traffic onthe shared tree for a given （S，G）
单选题
What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）
A
immediately after receiving the first packet on the shared tree for a given （S，G）
B
after receiving over 1 kb/s traffic onthe shared tree for a given （S，G）
C
10 seconds after receiving the first packet on the shared tree for a given （S，G）
D
30 seconds after receiving the first packet on the shared tree for a given （S，G）
E
after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）
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The default behavior of switching to the shortest path tree as soon as a new source is detected on the shared tree can be disabled by setting the value in the ip pim spt-threshold command to "zero." （）A、loop guardB、storm controlC、storm suppressionD、broadcast suppressionE、BPDU guard
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What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）A、immediately after receiving the first packet on the shared tree for a given （S，G）B、after receiving over 1 kb/s traffic onthe shared tree for a given （S，G）C、10 seconds after receiving the first packet on the shared tree for a given （S，G）D、30 seconds after receiving the first packet on the shared tree for a given （S，G）E、after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）
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