治疗冠心病肝气郁滞证，周次清教授常选用的方剂是（）

A.The selection of inter network transmissionprotocols
B.Determination of router parameters
C.Selection and Design of Routing Protocol
D.Host installation testing steps

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8.单项选择题The correct description of network devices is（）.

A.Convergence layer switches should use deviceswith strong switching capabilities
B.Access layer switches indirectly connect tousers through network adapters
C.The components of the core switch do notsupport hot swapping functionality
D.The router supports IGMP protocol but does notsupport static multicast configuration

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9.单项选择题The incorrect description about the distributedqueue dual bus（DQDB）of metropolitan areanetwork switching technology is（）.

A.DQDB can bridge LAN and WAN
B.The network operation using DQDB technologyis independent of the number of workstations
C.Using a dual bus architecture，the operation ofbuses depends on each other
D.DQDB uses optical fiber as the transmissionmedium and can support urban areas with adiameter exceeding 50KM

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10.单项选择题In the framework of information network systems，multimedia information retrieval services areprovided by（）.

A.Network Basic Platform
B.Network scheduling platform
C.Network Security Platform
D.Network service platform

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