單項選擇題

You need to connect two Company core switches via an ISL trunk. 
Which statement is true  regarding the configuration of ISL trunks? ()

A. A Catalyst switch cannot have ISL and IEEE 802.1q trunks enabled.
B. All Catalyst switches support ISL trunking.
C. A Catalyst switch will report giants if one side is configured for ISL while the other side is not.
D. ISL trunking requires that native VLANs match.
E. None of the other alternatives apply


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1.單項選擇題

A new Company switch was just configured using the "switchport trunk native vlan 7" command.  
What does this interface command accomplish?()

A. Causes the interface to apply ISL framing for traffic on VLAN 7
B. Configures the trunking interface to forward traffic from VLAN 7
C. Configures the interface to be a trunking port and causes traffic on VLAN 7 to be 802.1q tagged
D. Configures the trunking interface to send traffic from VLAN 7 untagged
E. None of the other alternatives apply

4.單項選擇題

You need to configure a new Company switch for trunking. 
Which switch command enables a  trunking protocol that appends a four byte CRC to the packet?()

A. CompanySwitch(config-if)#switchport trunk encapsulation dot1q
B. CompanySwitch(config-if)#switchport trunk encapsulation itef
C. CompanySwitch(config-if)#switchport trunk encapsulation fddi
D. CompanySwitch(config-if)#switchport trunk encapsulation isl
E. None of the other alternatives apply

5.單項選擇題

Switch R1 has been configured with DTP using the desirable option. 
Which statement describes  Dynamic Trunking Protocol (DTP) desirable mode?()

A. The interface actively attempts to convert the link to a trunk link.
B. The interface is put into permanent trunking mode but prevented from generating DTP frames.  
C. The interface is put into permanent trunking mode and negotiates to convert the link into a trunk  link.
D. The interface is put into a passive mode, waiting to convert the link to a trunk link.  
E. None of the other alternatives apply


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