Day 31

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1. In the spanning tree forwarding state the switch _____ frames received from the attached segment.

buffers

forwards

blocks

discards

Question 1 of 29

2. All your switches are left at default settings. Which of the below commands will set your switch to be the STP root?

Switch(config)#spanning-tree vlan 2 root primary

Switch(config)#spanning-tree vlan 2 root 4096

Switch(config)#spanning-tree vlan 2 root active

Switch(config)#spanning-tree vlan 2 root

Question 2 of 29

3. The Root Guard feature prevents a Root Port from becoming a Designated Port.

False

True

Question 3 of 29

4. Per VLAN Spanning Tree Plus (PVST+) allows for an individual STP instance per VLAN.

False

True

Question 4 of 29

5. RSTP is backwards compatible with STP.

False

True

Question 5 of 29

6. RSTP port roles include (choose all that apply)

Backup

Root

Designated

Alternate

Question 6 of 29

7. In the spanning tree listening state the switch discards frames received on the port from the attached segment.

True

False

Question 7 of 29

8. All your switches are left at default settings. Which of the below commands will set your switch to be the STP root?

Switch(config)#spanning-tree vlan 2 priority 4096

Switch(config)#spanning-tree vlan 2 priority 65535

Switch(config)#spanning-tree vlan 2 priority 32768

Switch(config)#spanning-tree vlan 2 priority primary

Question 8 of 29

9. The STP Bridge Priority values range from 0 to _____.

65535

1024

128

Question 9 of 29

10. Which port is marked in the below diagram?

Secondary Port

Alternate Port

Backup Port

Redundant Port

Question 10 of 29

11. The default port cost for Fast Ethernet is?

250

Question 11 of 29

12. Which bridge is elected root?

Question 12 of 29

13. STP is defined in ____?

Cisco propreitary (not defined)

IEEE 802.1D

RFC 802.1D

ANSI 802.1D

Question 13 of 29

14. What type of port is obscured in the below fig?

Root Port

Secondary Port

Alternate Port

Backup Port

Question 14 of 29

15. RSTP performs similar functions to Uplink Fast and Backbone Fast.

True

False

Question 15 of 29

16. The Uplink Fast feature provides faster failover to a redundant link when the indirect link fails.

True

False

Question 16 of 29

17. The BPDU Guard feature prevents the port from receiving any BPDUs but does not prevent it from sending them. If any BPDUs are received, the port will be errdisabled.

False

True

Question 17 of 29

18. BPDU Guard should be enabled on all ports with Port Fast enabled.

True

False

Question 18 of 29

19. Switches determine the best Configuration BPDU based on the following four factors which order?:

Lowest Root Bridge ID
Lowest Root path cost to Root Bridge
Lowest sender Bridge ID
Lowest sender Port ID

1324

2134

1234

4321

Question 19 of 29

20. The STP Max Age timer is?

2 seconds

5 seconds

15 seconds

20 seconds

Question 20 of 29

21. RSTP uses the same BPDU as STP.

True

False

Question 21 of 29

22. STP port states include (choose all that apply).

Disabled

Blocking

Learning

Forwarding

Listening

Question 22 of 29

23. STP port Listening state can be mapped to RSTP ____ state.

Learning

Forwarding

Discarding

Listening

Question 23 of 29

24. Port Fast is a feature that is typically enabled only for a port or interface that connects to a switch.

True

False

Question 24 of 29

25. The Port Fast feature does effectively disables Spanning Tree on the selected port.

False

True

Question 25 of 29

26. BPDUs are sent every ___ seconds.

Question 26 of 29

27. STP uses the exchange of BPDUs to determine the network topology, which is determined by the following three variables:

The unique MAC address (switch identifier) that is associated with each switch

The path cost to the Root Bridge associated with each switch port

The ARP cache entry for the connected switch

The port identifier (MAC address of the port) associated with each switch port

Question 27 of 29

28. In the spanning tree learning state the switch discards frames received from the attached segment.

True

False

Question 28 of 29

29. When configured at interface level BPDU Filter effectively disables STP on the selected ports by preventing them from sending or receiving any BPDUs.

True

False

Question 29 of 29

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