Which three challenges have been created by the move toward Virtualization in the data center? （）

单项选择题Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?（）

A.Dedicated lines for high security data transfer
B.Data and audio signals that share the same communications infrastructure
C.Secure access to company extranet
D.Simple solution for high-quality digital video using coaxial cable

多项选择题Which three are benefits of A virtualized data center solution over A typical implementation?（）

A.simplified cabling
B.more efficient routing
C.fewer applications per server
D.more efficient power consumption
E.more control over each server
F.less rack space

单项选择题What is a benefit of Internet protocol (IP) telephony?（）

A.Synchronizes password exchanges for call setup
B.Creates an encrypted tunnel for voice through a Transmission Control Protocol (TCP)/IP network
C.Enables two-way voice transmission over a packet-switched TCP/IP network
D.Eliminates the need for physical cabling in a TCP/IP network

单项选择题Controlling costs that are associated with network issues, keeping unexpected problems from affecting productivity, and achieving business goals are characteristics of which cisco offering?（）

A.cisco captial financing
B.cisco SMARTnet service
C.cisco network optimization service
D.cisco smart business roadmap

单项选择题A customer asks for help choosing their WAN technology, the customer is looking for A solution that can be used across very long distances, provides QoS and VPN support, and is sensitive to their budgeting needs ,which WAN technology would you recommend?（）

A.wide transport
B.metroethernet
C.frame relay
D.leaseD line
E.MPLS