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若3a2－5b＜0，则方程x5＋2ax3＋3bx＋4c=0（)．A．无实根B．有唯一实根C．有三个不同的实根D．有五个不同的实

若3a2－5b＜0，则方程x5＋2ax3＋3bx＋4c=0()．

A．无实根

B．有唯一实根

C．有三个不同的实根

D．有五个不同的实根

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更多“若3a2－5b＜0，则方程x5＋2ax3＋3bx＋4c=0（)．A．无实根B．有唯一实根C．有三个不同的实根D．有五个不同的实”相关的问题

第1题

Content networking solutions improve access to which two types of content?()

A.Media-rich e-learning

B.Real-time financial system reports

C.Text-based enterprise e-mail distribution

D.Video presentations from corporate leaders

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第2题

As a Pass Guide instructor you are giving a lecture on the historical context of Cisco. Yo

u point out that a computer scientist started the Cisco Corporation. One of the attendants asks you when and where Cisco was founded. What should you respond? （）

A. 1978

B. 1984

C. 1991

D. 1996

E.Massachusetts Institute of Technology

F.California Polytechnic Institute

G.Harvard

H.Stanford

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第3题

Youaretroubleshootingaone-waycallproblemwithaCisco7920wirelessIPphoneonastandaloneWLAN.Whatmayhavecausedthisproblem?()

A.Theminimumdatarateisnotsetto11Mbps.

B.Anaddressresolutionprotocolhasbeendisabled.

C.PubliclySecurePacketforwardingisenabled.

D.Theaccesspointissettotheleastcongestedchannel.

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第4题

Which network technology allows for the monitoring of active communication networks to diagnose problems and gather statistics for network administration?()

A.Network security

B.Content networking

C.Network management

D.Campus local-area networking

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第5题

You are the network consultant from passguide.com. Do you know what attacks are software based attacks that disable your computer and attack user by e-mail?()

A.Virus

B.Worm

C.Trojan

D.Executable

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第6题

Bydefault,ontheWLANcontrollerforavoiceapplicationusingCisco7921wirelessIPphones,whatisthepercentageofRFbandwidththatcanbededicatedtothephones?()

A.55percent

B.56percent

C.75percent

D.85percent

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第7题

WhenconfiguringaWLANcontrollerforavoiceapplicationusingCisco7920wirelessIPphones.Which twogeneralcontrolsettingsshouldyouselect?()

A.AggressiveLoadBalancingon

B.AggressiveLoadBalancingoff

C.Multicaston

D.Multicastoff

E.APFallbackon

F.APFallbackoff

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第8题

OnaCiscoAironet802.11a/b/gwirelessLANclientadapter,thestatusLEDandactivityLEDarealternatingonandoff.Whatdoesthisindicate?()

A.Theclientcardhasfailed.

B.Theclientcardisnotassociatedtothenetwork.

C.Thedriverhasbeeninstalledincorrectly.

D.Theclientcardhasawakenedfrompower-savemode.

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第9题

ThetagtimeoutvalueforaCiscoWirelessLocationApplianceshouldbesettowhichtagbeaconrate?()

A.4to6timesthetagbeaconingrate

B.6to8timesthetagbeaconingrate

C.8to10timesthetagbeaconingrate

D.10to12timesthetabbeaconingrate

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第10题

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)

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