AuserisunabletoreachtheInternet.ThetechnicianaskstheusertodoanIPCONFIG/all.TheuserreportsthattheirIPaddressis172.16.1.18,subnetmaskis255.255.255.0,andtheirdefaultgatewayis172.16.1.18.Whichofthefollowingisthecauseoftheproblem?()
A. Defaultgateway
B. Networkcable
C. Subnetmask
D. CNAMErecord
招标采购的优越性表现为()。
A. 体现了公开、公正和公平原则
B. 体现了竞争原则
C. 体现了优化原则
D. 体现了成本原则
Acompanyhasinstalledanew802.11gpoint-to-pointconnectionbetweentwobuildingsandisexperiencinglowthroughputacrossthelink.Thecurrentsetupinvolvesawirelessbridgeontheroofwithanomni-directionalantenna.WhichofthefollowingwouldBESTimprovethelinkperformance?()
A. Replacethewirelessbridgeswithwirelessaccesspoints.
B. Installbi-directionalamplifiersatbothsites.
Configurechannelhoppingonbothwirelessbridges.
D. Replacetheomni-directionalantennaswithYagiantennas
为了实现供应链采购,需要做好哪些基础建设工作?()。
A. 信息基础建设
B. 供应链系统基础建设
C. 物流基础建设
D. 采购基础建设