Spanning Tree Protocol Questions and Answers

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Showing 10 of 16 questions
Q1
What is the purpose of Spanning Tree Protocol in a switched LAN?
  • A To provide a mechanism for network monitoring in switched environments
  • B To prevent routing loops in networks with redundant paths
  • C To prevent switching loops in networks with redundant switched paths
  • D To manage the VLAN database across multiple switches
Answer: Option C
Q2
Which statement describes a spanning-tree network that has converged?
  • A All switch and bridge ports are in the forwarding state.
  • B All switch and bridge ports are assigned as either root or designated ports.
  • C All switch and bridge ports are in either the forwarding or blocking state.
  • D All switch and bridge ports are either blocking or looping.
Answer: Option C
Q3
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?
  • A Forwards the switch to the first available link
  • B Drops the frame
  • C Floods the network with the frame looking for the device
  • D Sends back a message to the originating station asking for a name resolution
Answer: Option C
Q4
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?
  • A During high-traffic periods
  • B After broken links are reestablished
  • C When upper-layer protocols require high reliability
  • D In an improperly implemented redundant topology
Answer: Option D
Q5
If you want to disable STP on a port connected to a server, which command would you use?
  • A disable spanning-tree
  • B spanning-tree off
  • C spanning-tree security
  • D spanning-tree portfast
Answer: Option D
Q6
Which of the following statement is true?
  • A A switch creates a single collision domain and a single broadcast domain. A router creates a single collision domain.
  • B A switch creates separate collision domains but one broadcast domain. A router provides a separate broadcast domain.
  • C A switch creates a single collision domain and separate broadcast domains. A router provides a separate broadcast domain as well.
  • D A switch creates separate collision domains and separate broadcast domains. A router provides separate collision domains.
Answer: Option B
Q7
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?
  • A The routing tables on the switches will not update.
  • B The MAC forward/filter table will not update on the switch.
  • C Broadcast storms will occur on the switched network.
  • D The switches will automatically load-balance between the two links.
Answer: Option C
Q8
Layer 2 switching provides which of the following?     Hardware-based bridging (ASIC)     Wire speed     Low latency     Low cost
  • A 1 and 3
  • B 2 and 4
  • C 1, 2 and 4
  • D All of the above
Answer: Option D
Q9
Your switch has a port status LED that is alternating between green and amber. What could this indicate?
  • A The port is experiencing errors.
  • B The port is shut down.
  • C The port is in STP blocking mode.
  • D Nothing; this is normal.
Answer: Option A
Q10
You want to run the new 802.1w on your switches. Which of the following would enable this protocol?
  • A Switch(config)# spanning-tree mode rapid-pvst
  • B Switch# spanning-tree mode rapid-pvst
  • C Switch(config)# spanning-tree mode 802.1w
  • D Switch# spanning-tree mode 802.1w
Answer: Option A
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