5 chapter comp netw

Which port state will switch ports immediately transition to when configured for PortFast?

• listening

• forwarding

• learning

• blocking

After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?

• Each switch will analyze the sum of the hops to reach the root and use the path with the fewest hops.

• Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

• Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

• Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

Which is the default STP operation mode on Cisco Catalyst switches?

• MST

• Rapid PVST+

• RSTP

• PVST+

• MSTP

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

• VLAN ID

• extended system ID

• MAC address

• bridge priority

During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator. What is the first step of the spanning-tree election process?

• Each switch with a lower root ID than its neighbor will not send BPDUs.

• All the switches send out BPDUs advertising themselves as the root bridge

• Each switch determines what port to block to prevent a loop from occurring.

• Each switch determines the best path to forward traffic.

Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.)

• bridge ID

• extended system ID

• PortFast

• edge port

• PVST+

Which three port states are used by Rapid PVST+? (Choose three.)

• trunking

• forwarding

• discarding

• learning

• blocking

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

• root port

• disabled port

• designated port

• alternate

Which two statements describe a switch port that is configured with PortFast? (Choose two.)

• The switch port sends DHCP requests before transitioning to the forwarding state

• The switch port should never receive BPDUs.

• The switch port immediately transitions from the listening to the forwarding state.

• The switch port immediately transitions from blocking to the forwarding state.

• The switch port immediately processes any BPDUs before transitioning to the forwarding state.

What is one way to correct a spanning tree failure?

• Replace all instances of STP with RSTP.

• Insert redundant links to replace the failed STP links.

• Replace the cables on failed STP links.

• Manually remove redundant links in the switched network.