Day 34

1. In the event of a tie for STP root port election, what is the order used for tiebreakers?

1. Lowest Root Bridge ID

2. Lowest Root path cost to Root Bridge

3. Lowest sender Bridge ID

4. Lowest sender Port ID

1324

1234

2341

4321

Question 1 of 18

2. If you want to configure Extended VLANs, you must put the switch into VTP server mode.

True

False

Question 2 of 18

3. STP timers for Hello - Forward Delay - Max Age are?

20-15-2

2-15-20

15-20-2

Question 3 of 18

4. To debug STP traffic use the command?

debug spanning tree

debug spanning-tree events

debug stp

debug layer 2

Question 4 of 18

5. Explain Root Guard.

Prevents a port from becoming a forwarding port.

Prevents a port from becoming a root port.

Prevents a port from becoming a blcking port.

Prevents a port from becoming a designated port.

Question 5 of 18

6. Default STP port cost for a 100Mbps interface is?

255

100

Question 6 of 18

7. Extended VLANs are numbered from ___ to ____, inclusive.

1006 to 4094

1001 to 4094

1006 to 4095

1000 to 4099

Question 7 of 18

8. The primary purpose of the Designated Port is to?

Prevent loops

Increase throughput

Improve security

Improve convergence

Question 8 of 18

9. By default, PAgP packets are sent between EtherChannel-capable ports in order to negotiate the forming of an EtherChannel. These packets are sent to the destination Multicast MAC address ________, which is also the same Multicast address that is used by CDP, UDLD, VTP, and DTP.

01-00-0C-CC-CC-CC

00-00-0C-CC-CC-CC

01-0A-0C-CC-CC-CC

01-CC-0C-CC-CC-CC

Question 9 of 18

10. Switches determine the best Configuration BPDU based on the following four factors. Sort the list into the correct order.

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

Question 10 of 18

11. Port Fast disables Spanning Tree on the port it is configured on.

False

True

Question 11 of 18

12. During STP root bridge election, traffic is still forwarded over switches in the STP domain.

False

True

Question 12 of 18

13. When a Non-Root Bridge receives a Configuration BPDU on its Root Port, which is the port that provides the best path to the Root Bridge, it sends an updated version of the BPDU via its Root Port(s).

True

False

Question 13 of 18

14. Switch EtherChannels using PAgP may be configured to operate in one of two modes: ___ or _____.

passive or active

primary or secondary

auto or desirable

master or slave

Question 14 of 18

15. The default bridge priority for Cisco switches is?

255

32768

16384

Question 15 of 18

16. LACP supports which two modes?

auto and desirable

active and passive

primary and secondary

master and slave

Question 16 of 18

17. If authenticated, the port will transition to “_______” and the supplicant will be able to forward packets to the network.

admitted

authenticated

authorized

secured

Question 17 of 18

18. _______ BPDUs are sent by LAN switches and are used to communicate and compute the Spanning Tree topology.

Update

Topology

Configuration

Exchange

Question 18 of 18

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