Cisco 2, Module 5 (SubSection Questions)

Which of the following ports will forward Ethernet frames? (Choose two.)

• Designated port

• Blocked port or non-dedicated port

• Root port

How often does a switch send a BPDU?

• Every 2 seconds

• Every 15 seconds

• Every 20 seconds

• Only when there is a change in the topology

The port on the segment (with two switches) that has the lowest path cost to the root bridge is the:

• Designated port

• Blocked port or non-designated port

• Root port

• Routed Port

The port closest to the root bridge in terms of least overall cost (best path) to the root bridge is the:

• Designated port

• Blocked port or non-designated port

• Root port

• Routed Port

The root bridge will be the switch with the:

• Lowest bridge ID

• Highest bridge ID

• Lowest port priority

• Highest port priority

The sum of individual port costs along the path from the switch to the root bridge is known as the:

• Least cost path

• Shortest path cost

• Best path cost

• Root path cost

By default (without any configuration on a switch), what will determine which switch is the root bridge?

• The bridge priority

• The extended system ID

• The MAC address of the switch

• The bridge ID

1. Which statement describes STP?

• 1. STP is a Layer 2 routing protocol.

• 1. STP is a Layer 3 routing protocol for Ethernet LANs.

• 1. STP is a Layer 2 loop prevention protocol for Ethernet LANs.

• 1. STP is a Layer 3 loop prevention protocol for IP networks.

1. Without STP on the Ethernet LAN, which three types of frames could NOT cause a catastrophic loop in the network?

• 1. Unicast

• 1. Unknown unicast

• 1. Multicast

• 1. Broadcast

1. What device is elected by the Spanning Tree Algorithm? All other switches determine a single least-cost path to this device.

• 1. root bridge

• 1. dedicated bridge

• 1. default gateway

• 1. core switch