SRWE - Module 5 - STP Concepts

An administrator is troubleshooting a switch and wants to verify if it is a root bridge. What command can be used to do this?

• show interface spanning-tree
• show startup-config
• show spanning-tree
• show running-config
• show vlan

What is one way to correct a spanning tree failure?

• Manually remove redundant links in the switched network
• Replace the cables on failed STP links
• Replace all instances of STP with RSTP
• Insert redundant links to replace the failed STP links
• Turn off spanning tree altogether

When PVST is running over a switched network, which port state can participate in BPDU frame forwarding based on BPDUs received, but does not forward data frames?

• Forwarding
• Listening
• Blocking
• Disabled
• Discarding

What value determines the root bridge when all switches connected by trunk links have default STP configurations?

• IP address
• Bridge priority
• Extended system ID
• VLAN ID
• MAC address

Refer to the exhibit. Which switch will be the root bridge after the election process is complete?

• Switch 2
• Switch 3
• Switch 1
• Switch 4
• Switch 5

A switch is configured to run STP. What term describes a field used to specify a VLAN ID?

• Bridge Priority
• Extended VLAN ID
• Extended system ID
• Port ID
• Bridge ID

Refer to the exhibit. If SW2 is the root bridge, which interface would be the alternate port?

• Fa0/16
• Fa0/15
• Fa0/13
• Fa0/14

What is the IEEE standard enhancement of 802.1D?

• STP+
• RSTP
• PVST+
• MST
• STP

Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?

• Designated port
• Disabled port
• Alternate
• Root port
• Forwarding port

In which two PVST+ port states are MAC addresses learned? (Choose two.)

• Disabled
• Learning
• Forwarding
• Blocking
• Listening