The port must be physically connected to another Layer 3 device.
At least one port in VLAN 20 must be active.
The Layer 3 routing protocol must be operational and receiving routing updates from neighboring peer devices.
Because this is a virtual interface， the operational status will always be in an up/up state.
第1题：
A. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 link
B. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link
C. to two core switches from redundant distribution switches connected with a Layer 2 link
D. to two core switches from redundant distribution switches connected with a Layer 3 link
E. to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO
第2题：
To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus？（）
第3题：
As a network administrator, you have configured a Catalyst 6500 Series Switch with redundant supervisor engine in a CIS network. What is the result of issuing the redundancy force-switchover command on that switch?（）
A. Automatic switchover from active to standby on primary supervisor failure
B. Reset of the primary supervisor.
C. Manual switchover from active to standby supervisor
D. Manual switchover from standby to active supervisor
第4题：
You have configured a Cisco Catalyst switch to perform Layer 3 routing via an SVI and have assigned that interface to VLAN 20. To check the status of the SVI， you issue the show interfaces vlan 20 command at the CLI prompt. You see from the output display that the interface is in an "up/up" state. What must be true in an SVI configuration to bring the VLAN and line protocol up？（）
第5题：
You are at a client site. It is a medium-sized business and needs a Cisco Catalyst switch that offers high availability and security. What type of Catalyst switches would you recommend？（）
第6题：
When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）
第7题：
You examine the port statistics on a Cisco Catalyst switch and notice an excessive number offrames are being dropped. Which of the following are possible reasons for the drops？（）
第8题：
You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method.When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）
A. Switch(config)# switchport trunk encapsulation isl
B. Switch(config)# switchport trunk encapsulation ietf
C. Switch(config-if)# switchport trunk encapsulation isl
D. Switch(config-if)# switchport trunk encapsulation ietf
E. Switch(config-if)# switchport trunk encapsulation dot1q
第9题：
Which two series of Cisco Catalyst switches， when placed in the distribution layer， effectively pass high amounts of network traffic between the core and access layers while aggregating access？ （）
第10题：
If an enterprise customer required A switch for their branch office access layer, which family of switches would the customer likely choose from?（）