多項選擇題You are the network consultant from passguide.com. In which situation you will advice your customer to implement data centers?（）

A.An increased need for specialized IT silos
B.Protecting the business from information outages
C.IT systems grow fast
D.Optimizing the efficiency with which IT operates


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2.單項選擇題Which Cisco product family can simultaneously implement firewall, VPN, content security, network access control, virtualization, anD content filtering?（）

A.intrusion prevention systems
B.catalyst switches
C.adaptive security appliances
D.protect link gateway

3.單項選擇題Which Internet Protocol(IP) telephony element is best categorizedas a voice application component?（）

A.Voice gateway
B.Private branch exchange (PBX)
C.Advanced audio conferencing software
D.IP telephone

4.單項選擇題Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）

A.Advanced call-handling software, such as Cisco Unity
B.Call-management hardware and software, such as CiscoCallManager
C.Client-based software, such as CiscoSoftPhone
D.Voice gateways, such as the Cisco VG248 Analog Phone Gateway

5.單項選擇題Which network technology allows for the monitoring of active communication networks to diagnose problems and gather statistics for network administration?（）

A.Content networking
B.Campus local-area networking
C.Network management
D.Network security