YournetworkconsistsofanActiveDirectorydomainthatcontainsthedomaincontrollersshowninthefollowingtable.YouplantodeployanExchangeServer2010serverineachsite.YouneedtorecommendchangestothedomaincontrollerstosupporttheinstallationofExchangeServer2010.Whatshouldyoudo？（）A.EnableServer2asaglobalcatalogserver.B.EnableServer3asaglobalcatalogserver.C.UpgradeServer2toWindowsServer2008SP2（x64）.D.UpgradeServer3toWindowsServer2008SP2（x64）.
YournetworkconsistsofanActiveDirectorydomainthatcontainsthedomaincontrollersshowninthefollowingtable.YouplantodeployanExchangeServer2010serverineachsite.YouneedtorecommendchangestothedomaincontrollerstosupporttheinstallationofExchangeServer2010.Whatshouldyoudo？（）
A.EnableServer2asaglobalcatalogserver.
B.EnableServer3asaglobalcatalogserver.
C.UpgradeServer2toWindowsServer2008SP2（x64）.
D.UpgradeServer3toWindowsServer2008SP2（x64）.
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classWrench2{intsize;publicstaticvoidmain(String[]args){Wrench2w=newWrench2();w.size=9;Wrench2w2=go(w,w.size);System.out.print(w2.size);}staticWrench2go(Wrench2wr,ints){s=7;returnwr;}}结果为:() A.7B.9C.编译失败D.输出结果不可预料
Given the following two tables:TAB1 R1A A A B B C C D E TAB2 R2A A B B C C DWhich of the following queries returns the following result set? RETVAL E() A.SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2B.SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2C.SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 r2D.SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
话务控制的方法有()。 A.发端目的码控制B.出局目的码控制C.跳跃路由控制D.中继预留控制