Spanning Tree Protocol(Computer Aptitude > Networking ) Questions and answers for exam Preparation

Computer Aptitude > Networking

SPANNING TREE PROTOCOL MCQs

Total Questions : 34 | Page 3 of 4 pages

Question 21.
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?

The routing tables on the switches will not update.
The MAC forward/filter table will not update on the switch.
Broadcast storms will occur on the switched network.
The switches will automatically load-balance between the two links.

Discuss Question

Answer: Option C. -> Broadcast storms will occur on the switched network.

Question 22. If you want to disable STP on a port connected to a server, which command would you use?

disable spanning-tree
spanning-tree off
spanning-tree security
spanning-tree portfast

Discuss Question

Answer: Option D. -> spanning-tree portfast

Question 23. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?

During high-traffic periods
After broken links are reestablished
When upper-layer protocols require high reliability
In an improperly implemented redundant topology

Discuss Question

Answer: Option D. -> In an improperly implemented redundant topology

Question 24. Layer 2 switching provides which of the following?
1. Hardware-based bridging (ASIC)
2. Wire speed
3. Low latency
4. Low cost

1 and 3
2 and 4
1, 2 and 4
All of the above

Discuss Question

Answer: Option D. -> All of the above

Question 25. Your switch has a port status LED that is alternating between green and amber. What could this indicate?

The port is experiencing errors.
The port is shut down.
The port is in STP blocking mode.
Nothing; this is normal.

Discuss Question

Answer: Option A. -> The port is experiencing errors.

Question 26. . What command will display the forward/filter table?

show mac filter
show run
show mac address-table
show mac filter-table

Discuss Question

Answer: Option C. -> show mac address-table

Question 27. . Which of the following is a layer 2 protocol used to maintain a loop-free network?

Discuss Question

Answer: Option B. -> STP

Question 28. . If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

Discard it and send an error message back to the originating host
Flood the network with the frame
Add the source address and port to the MAC address table and forward the frame out the destination port
Add the destination to the MAC address table and then forward the frame

Discuss Question

Answer: Option C. -> Add the source address and port to the MAC address table and forward the frame out the destination port

Question 29. . You want to run the new 802.1w on your switches. Which of the following would enable this protocol?

Switch(config)# spanning-tree mode rapid-pvst
Switch# spanning-tree mode rapid-pvst
Switch(config)# spanning-tree mode 802.1w
Switch# spanning-tree mode 802.1w

Discuss Question

Answer: Option A. -> Switch(config)# spanning-tree mode rapid-pvst

Question 30. . You need to allow one host to be permitted to attach dynamically to each switch interface. Which two commands must you configure on your catalyst switch to meet this policy?
1. Switch(config-if)# ip access-group 10
2. Switch(config-if)# switchport port-security maximum 1
3. Switch(config)# access-list 10 permit ip host 1
4. Switch(config-if)# switchport port-security violation shutdown
5. Switch(config)# mac-address-table secure