| Exam 200-301 | Question id=5417 | Network Access |
Examine the following output from SwitchD.
switch# show interfaces fastethernet0/1 switchport
Name; Fa0/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
<Output omitted>
Based on this output, what command MUST be executed for an 802.1q trunk to be created on port Fa0/1?
| A. |
switchport mode trunk | |
| B. |
switchport mode nonegotiate | |
| C. |
switchport trunk encapsulation 802.1q | |
| D. |
switchport trunk native VLAN |
The command switchport mode trunk must be executed for a trunk to form. The output indicates that the Administrative Mode of the port is "static access," which means the port has been configured as a static (fixed) access port. Access mode disables trunking on an access port.
The switchport mode nonegotiate command does not need to be executed because the switch is already configured for non-negotiation, as indicated by the output Negotiation of Trunking: Off. Trunk negotiation using the Dynamic Trunking Protocol (DTP) does not need to be enabled for a trunk to form.
The switchport trunk encapsulation 802.1q command does not need to be executed for a trunk to form. Also, the output Operational Trunking Encapsulation: dot1q indicates that 802.1q encapsulation is already configured.
The switchport trunk native VLAN command does not need to be executed. This command is used to change the native VLAN from its default of 1, but leaving it set to the default of 1 will not prevent the trunk from forming.