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- CCNA Routing and Switching 200-105
6.
Which of the following commands identify switch interfaces as being trunking interfaces: interfaces that currently operate as VLAN trunks? (Choose two answers.)
- A.show interfaces
- B.show interfaces switchport
- C.show interfaces trunk
- D.show trunks
- Answer & Explanation
- Report
Answer : [B and C]
Explanation :
Explanation :
| The show interfaces switchport command lists both the administrative and operational status of each port. When a switch considers a port to be trunking, this command lists an operational trunking state of “trunk.” The show interfaces trunk command lists a set of interfaces: the interfaces that are currently operating as trunks. So, both these commands identify interfaces that are operational trunks. |
7.
Which of the following IEEE 802.1D port states are stable states used when STP has
completed convergence? (Choose two answers.)
- A.Blocking
- B.Forwarding
- C.Listening
- D.Learning
- E.Discarding
- Answer & Explanation
- Report
Answer : [A][B]
Explanation :
Explanation :
| Listening and learning are transitory port states, used only when moving from the blocking to the forwarding state. Discarding is not an 802.1D STP port state. |
8.
Which of the following are transitory IEEE 802.1D port states used only during the
process of STP convergence? (Choose two answers.)
- A.Blocking
- B.Forwarding
- C.Listening
- D.Learning
- E.Discarding
- Answer & Explanation
- Report
Answer : [C, D]
Explanation :
Explanation :
| Listening and learning are transitory port states, used only when moving from the blocking to the forwarding state. Discarding is not an 802.1D STP port state. Forwarding and blocking are stable states. |
9.
Which of the following bridge IDs wins election as root, assuming that the switches
with these bridge IDs are in the same network?
- A.32769:0200.1111.1111
- B.32769:0200.2222.2222
- C.4097:0200.1111.1111
- D.4097:0200.2222.2222
- E.40961:0200.1111.1111
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The smallest numeric bridge ID wins the election. |
10.
Which of the following facts determines how often a nonroot bridge or switch sends
an 802.1D STP Hello BPDU message?
- A.The Hello timer as confi gured on that switch.
- B.The Hello timer as confi gured on the root switch.
- C.It is always every 2 seconds.
- D.The switch reacts to BPDUs received from the root switch by sending another BPDU 2 seconds after receiving the root BPDU.
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Nonroot switches forward Hellos received from the root; the root sends these Hellos based on the root’s configured Hello timer. |
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