Notethefunctionalitiesofvariousbackgroundprocesses:1:Performrecoveryatinstancestartup.SMON2:Freetheresourcesusedbyauserprocesswhenitfails.PMON3:Cleanupthedatabasebuffercachewhenaprocessfails.PMON4:Dynamicallyregisterdatabaseserviceswithlisteners.PMON5:Monitorsessionsforidlesessiontimeout.PMON6:Cleanupunusedtemporarysegments.SMON7:Recordthecheckpointinformationincontrolfile.CKPTWhichoptionhasthecorrectfunctionalitieslistedforabackgroundprocess()A.Checkpoint(CKPT):1,2,5B.SystemMonitor(SMON):1,6C.ProcessMonitor(PMON):4,6,7D.DatabaseWriter(DBWR):1,3,4

Notethefunctionalitiesofvariousbackgroundprocesses:1:Performrecoveryatinstancestartup.SMON2:Freetheresourcesusedbyauserprocesswhenitfails.PMON3:Cleanupthedatabasebuffercachewhenaprocessfails.PMON4:Dynamicallyregisterdatabaseserviceswithlisteners.PMON5:Monitorsessionsforidlesessiontimeout.PMON6:Cleanupunusedtemporarysegments.SMON7:Recordthecheckpointinformationincontrolfile.CKPTWhichoptionhasthecorrectfunctionalitieslistedforabackgroundprocess()

A.Checkpoint(CKPT):1,2,5

B.SystemMonitor(SMON):1,6

C.ProcessMonitor(PMON):4,6,7

D.DatabaseWriter(DBWR):1,3,4


相关考题:

共有4个站进行码分多址通信。4个站的码片序列为:a:(-1-1-1+1+1-1+1+1)b:(-1-1+1-1+1+1+1-1)c:(-1+1-1+1+1+1-1-1)d:(-1+1-1-1-1-1+1-1)现收到这样的码片序列:(-1+1-3+1-1-3+1+1),则( )发送1。 A.a和dB.aC.b和cD.c

下列哪一组码是正交的?() A.(1,-1,-1,1)和(1,-1,-1,1);B.(1,-1,-1,1)和(1,1,1,1);C.(1,-1,-1,1)和(1,-1,-1,-1);D.(1,-1,-1,1)和(-1,1,1,-1)

2、A、B、C三个站点采用CDMA技术进行通信,A、B要向C发送数据,设A的码片序列为+1,-1,-1,+1,+1,+1,+1,-1。则B可以选用的码片序列为A.-1,-1,-1,+1,-1,+1,+1,+1B.-1,+1,-1,-1,-1,+1,+1,+1C.-1,+1,-1,+1,-1,+1,-1,+1D.-1,+1,-1,+1,-1,+1,+1,+1

A、B、C三个站点采用CDMA技术进行通信,A、B要向C发送数据,设A的码片序列为+1,-1,-1,+1,+1,+1,+1,-1。则B可以选用的码片序列为A.-1,-1,-1,+1,-1,+1,+1,+1B.-1,+1,-1,-1,-1,+1,+1,+1C.-1,+1,-1,+1,-1,+1,-1,+1D.-1,+1,-1,+1,-1,+1,+1,+1

已知HDB3码为 ,则对应的译码输出为11000010110000000010111。A.000+1-100-1+10-1+1-1+1-1000-1+10-1+1B.+1-1000-1+10-1+1000+1-100-1+10-1+1-1C.+1+1000-1+10-1+1000+1-100-1+10-1+1-1D.+1-1000-1+10-1+1000+1-100+1+10-1+1-1E.00+1-10+1-1+1-1000-1+1-1+1000-1+1+10

共有4个站进行码分多址通信。现收到这样的码片序列S:(-3 -1 -1 +1 +3 +1 +1 -1)。发送数据1的是()A.(-1-1-1+1+1-1+1+1)B.(-1-1+1-1+1+1+1-1)C.(-1+1-1+1+1+1-1-1)D.(-1+1-1-1-1-1+1-1)

共有4个站进行码分多址通信。4个站的码片序列为 A:(-1-1-1+1+1-1+1+1) B:(-1-1+1-1+1+1+1-1) C:(-1+1-1+1+1+1-1-1) D:(-1+1-1-1-1-1+1-1) 若收到码片序列S:(-1+1-3+1-1-3+1+1),则甲站发送的数据是 。(请填写0或1)

1、已知HDB3码为 ,则对应的译码输出为11000010110000000010111。A.000+1-100-1+10-1+1-1+1-1000-1+10-1+1B.+1-1000-1+10-1+1000+1-100-1+10-1+1-1C.+1+1000-1+10-1+1000+1-100-1+10-1+1-1D.+1-1000-1+10-1+1000+1-100+1+10-1+1-1E.00+1-10+1-1+1-1000-1+1-1+1000-1+1+10

四个站点进行码分多址CMDA通信,其序列分别为A(-1 -1 -1 +1 +1 -1 +1 +1)、B(-1 -1 +1 -1 +1 +1 +1 -1)、C(-1 +1 -1 +1 +1 +1 -1 -1)、D(-1 +1 -1 -1 -1 -1 +1 -1)。现收到序列(-1 +1 -3 +1 -1 -3 +1 +1),请问哪些站点发送了消息A.AB.BC.CD.D