ccna exam question number

ccna exam question number.Port path cost 19,Port priority 128, PortIdentifier 128.17.Port path cost 19, Port priority 128, PortIdentifier 128.17.Designated root has priority 4097,address d0c7.89ab. 1180 Root bridge priority and base MAC addressDesignated bridge has priority 32769,address d0c7.89c2.3100 own STP priority and base MAC addressDesignated port id is 128.4,designed path cost 19 Designated port ID and overhead value Timers: message age 0,forward delay 0,hold 0 Since edge port is enabled, STP timers are all 0 Number oftransitions to forwarding state The port is in the portfast mode Link type isThe port is an edge port point-to-point by defaultThe port link type is point-to-point by defaultBpdu guard is enabled The port is in the portfast mode BPDU: sent 11, received 0 The number of sent and received BPDUsChapter 14 STP and Switch Stacking .237 .The Root Guard feature is configured to prevent users from accessing the switch and becoming a new root bridge in the network without permission, thus destroying the existing STP tree. This feature is usually configured under ports that are open to the outside world on the access layer switch, and these ports will reject BPDUs that are better than the existing root bridge oIf a BPDU is received on a port configured with the PortFast command, the edge port feature is lost and the port participates in normal STP operations. The BPDUGuard feature is configured to prevent access to the switch on those ports on which the PortFast command has been configured, which can lead to the creation of switching loops. Because PortFast ports enter the forwarding state as soon as they are activated, these ports are typically used to access computers. The BPDU Guard feature prevents these ports from receiving BPDUs.14.5 Configuring RSTP and MSTP