Which two statements are true about BPDU port-guard and BPDU filtering? (Choose two.)

Refer to the exhibit and the partial configuration of switch SW_A and SW_B. STP is
configured on all switches in the network. SW_B receives this error message on the console
port:

00:06:34: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/5
(not half duplex), with SW_A FastEthernet0/4 (half duplex) , with TBA05071417(Cat6K-B)
0/4 (half duplex).
What would be the possible outcome of the problem?

Which two statements about the various implementations of STP are true? (Choose two.)

Refer to the exhibit. For what purpose is the command show ip cef used?

Refer to the exhibit. Which statement is true about the output?

Refer to the exhibit. What does the command channel-group 1 mode desirable do?

Refer to the exhibit. Initially, LinkA is connected and forwarding traffic. A new LinkB is then
attached between SwitchA and Hub

How are STP timers and state transitions affected when a topology change occurs in an STP
environment?

What two things will occur when an edge port receives a BPDU? (Choose two.)

What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does
not receive a BPDU from its neighbor for three consecutive hello time intervals?