Refer to the exhibit. When troubleshooting a network problem, a network analyzer is connected to Port f0/1 of a LAN switch. Which command can prevent BPDU transmission on this port?
A. spanning-tree portfast bpduguard enable
B. spanning-tree bpduguard default
C. spanning-tree portfast bpdufilter default
D. no spanning-tree link-type shared
there is no correct answer, if you enable port fast bpdu guard is enable by default, the only answer here is enable bpdu filter on the interface with the spanning tree bpdufilter enable command
I don’t think answer c is correct because we see that portfast is enabled on all interfaces in the ehxibit.
so that means that is we put the command “spanning-tree portfast bpdufilter default” (which is in global mode)
it immediately loses its operational PortFast status and BPDU filtering is disabled.
if bpdu filtring is disabled then every bpdu is not prevent and that is not what we try to accomplish.
does anybody have an idea for what the answer might be?