Spanning Tree Protocol MCQs

Question 1

What is the purpose of Spanning Tree Protocol in a switched LAN?

Accepted Answer

To prevent switching loops in networks with redundant switched paths

Answer

To provide a mechanism for network monitoring in switched environments

Answer

To prevent routing loops in networks with redundant paths

Answer

To manage the VLAN database across multiple switches

Question 2

Which statement describes a spanning-tree network that has converged?

Accepted Answer

All switch and bridge ports are in either the forwarding or blocking state.

Answer

All switch and bridge ports are in the forwarding state.

Answer

All switch and bridge ports are assigned as either root or designated ports.

Answer

All switch and bridge ports are either blocking or looping.

Question 3

What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?

Accepted Answer

Floods the network with the frame looking for the device

Answer

Forwards the switch to the first available link

Answer

Drops the frame

Answer

Sends back a message to the originating station asking for a name resolution

Question 4

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?

Accepted Answer

In an improperly implemented redundant topology

Answer

During high-traffic periods

Answer

After broken links are reestablished

Answer

When upper-layer protocols require high reliability

Question 5

If you want to disable STP on a port connected to a server, which command would you use?

Accepted Answer

spanning-tree portfast

Answer

disable spanning-tree

Answer

spanning-tree off

Answer

spanning-tree security

Question 6

Which of the following statement is true?

Accepted Answer

A switch creates separate collision domains but one broadcast domain. A router provides a separate broadcast domain.

Answer

A switch creates a single collision domain and a single broadcast domain. A router creates a single collision domain.

Answer

A switch creates a single collision domain and separate broadcast domains. A router provides a separate broadcast domain as well.

Answer

A switch creates separate collision domains and separate broadcast domains. A router provides separate collision domains.

Question 7

You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?

Accepted Answer

Broadcast storms will occur on the switched network.

Answer

The routing tables on the switches will not update.

Answer

The MAC forward/filter table will not update on the switch.

Answer

The switches will automatically load-balance between the two links.

Question 8

Layer 2 switching provides which of the following? 1. Hardware-based bridging (ASIC) 2. Wire speed 3. Low latency 4. Low cost

Accepted Answer

All of the above

Answer

1 and 3

Answer

2 and 4

Answer

1, 2 and 4

Question 9

Your switch has a port status LED that is alternating between green and amber. What could this indicate?

Accepted Answer

The port is experiencing errors.

Answer

The port is shut down.

Answer

The port is in STP blocking mode.

Answer

Nothing; this is normal.