Quiz on Spanning Tree Protocol Part-III

Chapter:Spanning Tree Protocol

Click on the correct answer for each question.

No negative marking and no time limit.

At the end check the score and correct your answer.

• 1. The switchport with the lowest path cost to the root bridge is _______

  
  A) Short port
  
  B) Root bridge port
  
  C) Root port
  
  D) Designated Port
  
  

• 2. If the bridge priority of two swithes are the same, then lower value of __________ decides the root bridge.

  
  A) VLAN
  
  B) Bridge ID k
  
  C) Path cost
  
  D) MAC address
  
  

• 3. The first parameter that decides the selection of designated port between two non-root ports connecting two non-root switches.

  
  A) neighbour port priority
  
  B) Lowest path cost to root bridge
  
  C) Bridge ID of the switch having port
  
  D) neighbor port number
  
  

• 4. If the first parameter is a tie in above case, what is the second tie breaker?

  
  A) neighbour port priority
  
  B) Lowest path cost to root bridge
  
  C) neighbor port number
  
  D) Bridge ID of the switch having port
  
  

• 5. If the second parameter is also a tie, then what is the third parameter to be compared in above case?

  
  A)neighbor port number
  
  B)MAC address of the switch
  
  C) lowest cost path to the root bridge
  
  D) neighbor port priority
  
  

• 6. If the third parameter in above case also ties, then the fourth parameter to decide the Designated port is _____

  
  A) neighbor port number
  
  B) MAC address of the switch
  
  C) neighbor port priority
  
  D) Bridge ID
  
  

• 7. If the fourth criteria in above case still can't decide the DP, then the last criteria is __________

  
  A) neighbor port number
  
  B) neighbor port priority
  
  C) Bridge ID
  
  D) MAC address
  
  

• 8. If the link of the root port goes UP after a temporary failure, it will take _____ for the link to be functional in 802.1D

  
  A) 30 sec
  
  B) 50 sec
  
  C) 15 sec
  
  D) 20 sec
  
  

• 9. If the root port link of a switch fails, it will start sending BPDU with the root ID as _____

  
  A) The original root bridge ID
  
  B) Bridge ID of neighbour switch
  
  C) Its own bridge ID
  
  D) Root ID field will be kept blank
  
  

• 10. A switch is getting BPDU from the valid root bridge, it starts getting BPDU from another switch claiming it be a root bridge. The second BPDUs are called the _____

  
  A) Spurious BPDU
  
  B) inferior BPDU
  
  C) false BPDU
  
  D) duplicate BPDU
  
  

Click on the correct answer for each question.

No negative marking and no time limit.