單項(xiàng)選擇題Lafeyette Productions is looking for a new ISP that has improved availability, load balancing, and catastrophe protection. Which type of ISP connectivity solution would be best?（）

A. single run
B. multi-homed
C. stub domain EBGP
D. direct BGP peering


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1.多項(xiàng)選擇題Flex Links are a pair of a Layer 2 interfaces (switchports or port channels), where one interface is configured to act as a backup to the other. Which two statements are correct regarding Flex Links?（）

A. An interface can only belong to single Flex Links.
B. An interface can belong to multiple Flex Links.
C. Flex Links operate only over single pairs of links.
D. Flex Links automatically disable STP so no BPDUs are propagated.

2.多項(xiàng)選擇題What four functions does Web Cache Communication Protocol (WCCP) incorporate?（）

A. load balancing
B. scalability
C. remote management
D. fault tolerance
E. service assurance

4.單項(xiàng)選擇題Scalability is provided in the server farm module by which of the following design strategies?（）

A. up to 10Gbps of bandwidth at the access level
B. redundant servers at the access level
C. modular block design at the access level
D. high port densities at the access level

5.單項(xiàng)選擇題You are the Cisco Network Designer in Cisco.com. What is the term for a logical SAN which provides isolation among devices physically connected to the same fabric?（）

A. InterSwitch Link
B. Virtua LAN
C. Virtual Output Queuing
D. virtual storage area network

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Which of these statements is true of routing protocols in a hub-and-spoke IPsec VPN topology?（）

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