Cisco ActualTests 642-812 v2008-03-14 412q.vce

QUESTION 34:
The Certkiller core switches use 802.1Q trunks to connect to each other. How does
802.1Q trunguide keep track of multiple VLANs?
A. It tags the data frame with VLAN information and recalculates the CRC value
B. It encapsulates the data frame with a new header and frame check sequence
C. It modifies the port index of a data frame to indicate the VLAN
D. It adds a new header containing the VLAN ID to the data frame
E. None of the above

QUESTION 35:
Refer to the following exhibits:
Exhibit #1:

Exhibit #2:
Study the exhibits carefully. The switchport output in Exhibit #1 displays the
default settings of interface FastEthernet 0/13 on switch Certkiller 1. Figure 2
displays the desired interface settings. Which command sequence would configure
interface FastEthernet 0/13 as displayed in Exhibit #2?
A. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic auto
Certkiller 1(config-if)# switchport trunk native DATA
Certkiller 1(config-if)# switchport trunk allowed vlan add 1,10,20
B. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic desirable
Certkiller 1(config-if)# switchport trunk native vlan DATA

Certkiller 1(config-if)# switchport trunk allowed vlan 1,10,20
C. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode trunk
Certkiller 1(config-if)# switchport trunk native DATA
Certkiller 1(config-if)# switchport trunk allowed vlan 1,10,20
D. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic desirable
Certkiller 1(config-if)# switchport trunk native vlan 10
E. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic desirable
Certkiller 1(config-if)# switchport trunk native vlan 10
Certkiller 1(config-if)# switchport trunk allowed vlan 1,10,20

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