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單項(xiàng)選擇題

Which site-to-site VPN solution allows Cisco routers, PIX Firewalls, and Cisco hardware clients to act as remote VPN clients in order to receive predefined security policies and configuration parameters from the VPN headend at the central site?（）

A. Easy VPN
B. GRE tunneling
C. Virtual Tunnel Interfaces
D. DynamicMultipoint VPN
E. Group Encrypted Transport VPN

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單項(xiàng)選擇題

When designing the WAN module within the enterprise edge, which document is used to specify the connectivity and performance agreements with the service provider?（）

A.RFP
B.RFC
C.SLC/SLA
D.SOW

單項(xiàng)選擇題

You are the network consultant from Cisco.com. Please point out the reason that STP required when VLANs do not span access layer switches.（）

A. ensure a loop-free topology
B. protect against user-side loops
C. support business applications
D. risk of lost connectivity without STP

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