單項(xiàng)選擇題You are the network consultant from passguide.com. Could you please tell customers what strategy will protect network resources and services from unauthorized actions?（）

A.Network management
B.Network optimization
C.Network security
D.Content storage networking


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1.單項(xiàng)選擇題Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?（）

A.Optical network
B.Network management
C.Storage-area network (SAN)
D.Content delivery network (CDN)

2.單項(xiàng)選擇題What does a router do?（）

A.Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)
B.Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)
C.Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)
D.Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)

3.單項(xiàng)選擇題Which component should you use to reduce collision issues on a large LAN?（）

A.Host
B.Switch
C.Printer
D.Repeater

4.單項(xiàng)選擇題In the 7-layer OSI model, which layer switching will take place?（）

A.Layer one
B.Layer two
C.Layer three
D.Layer four

5.單項(xiàng)選擇題Which device is used in wireless networks to send transmissions to a target area?（）

A.Optical fiber
B.Access point
C.Directional antenna
D.Omni-directional antenna

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

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

8.單項(xiàng)選擇題What is a benefit of Internet protocol (IP) telephony?（）

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

9.單項(xiàng)選擇題A global manufacturer of automobile parts wants to implement specialized voice applications to increase productivity and reduce the cost of overseas toll calls. Which Cisco solution best matches this business need?（）

A.Optical network
B.Digital subscriber line (DSL)
C.Internet Protocol (IP) telephony
D.Wireless local-area network (WLAN)

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

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