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Exam
: Cisco 642-066
Title
: Advanced Routing and
Switching for Field
Engineers
Version : Demo
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1. Refer to the exhibit. Which Catalyst switch configuration would protect a customer network from possible
disruption in the case in which an unauthorized switch is added to the network?
A. Switch0#show running-configuration
!
hostname Switch0
!
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport protected
!
B. Switch0#show running-configuration
!
hostname Switch0
!
spanning-tree portfast bpduguard default
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
interface FastEthernet0/1
spanning-tree guard root
!
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C. Switch0#show running-configuration
!
hostname Switch0
!
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport mode access
!
D. Switch0#show running-configuration
!
hostname Switch0
!
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport port-security violation restrict
!
Answer: B
2. While troubleshooting a network outage, you discover that an employee brought a switch from home into
the office to connect additional equipment to the network. In order to increase his speed, he connected this
switch to both network ports in his office, resulting in a bridge loop. Which of these can you implement to
prevent future occurrences of this issue?
A. RSTP
B. root guard
C. BPDU guard
D. GLBP
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Answer: C
3. Refer to the exhibit. For the given configuration, on packets leaving the router on interface
FastEthernet0/0 that matches t