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推导ARCH（3)的平稳性条件。
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更多 “推导ARCH（3)的平稳性条件。” 相关考题
考题
Youwanttosetthefollowinginitializationparametersforyourdatabaseinstance：LOG_ARCHIVE_DEST_1=’LOCATION=/disk1/arch’LOG_ARCHIVE_DEST_2=’LOCATION=/disk2/arch’LOG_ARCHIVE_DEST_3=’LOACTION=/disk3/arch’LOG_ARCHIVE_DEST_4=’LOCATION=/disk4/archMANDATORY’Identifythestatementthatcorrectlydescribesthissetting.（）A.TheMANDATORYlocationmustbeaflashrecoveryarea.B.Theoptionaldestinationsmaynotusetheflashrecoveryarea.C.ThissettingisnotallowedbecausethefirstdestinationisnotsetasMANDATORY.D.Theonlineredologfileisnotallowedtobeoverwrittenifthearchivedlogcannotbecreatedinthefourthdestination.
考题
Whatwillbetheresultofthefollowingconfiguration?()Log_archive_dest_1=location=c:\oracle\arch\mydbLog_archive_dest_2=location=z:\oracle\arch\mydb
A.Anerrorwilloccurduringdatabasestartupbecausethesecondparameterisnotvalid.B.Anerrorwilloccurduringdatabasestartupsinceyouaretryingtocreatearchivedredologsintwodifferentlocations.C.ArchivedredologswillbecreatedintwodifferentlocationsbytheARCHprocess.D.ArchivedredologswillbecreatedintwodifferentlocationsbytheLGWRprocess.E.Neitherparametersettingisvalid，sothedatabasewillnotstartup.
考题
YouhaveconfiguredflashrecoveryareainyourdatabaseandyousetthefollowingInitializationparametersforyourdatabaseinstance：LOG_ARCHIVE_DEST1=，，LOCATION=/disk1/archMANDATORY’LOG_ARCHIEVE_DEST2=，，LOCATION=/disk2/arch’LOG_ARCHIVK_DEST_3=，，LOCATION=/diSk3/archLOG_ARCH1VK_DEST_4=’LOCATION=/disk4/arch’LOG_ARCHIVE_MIN-SUCCEED_DEST=2Whilethedatabaseinstanceisfunctional，yourealizedthatthedestinationsetbytheLOG_ARCHIVE_DEST_IparameterIsnotavailableforthearchivedredologfiletobecreatedin.Allredologgroupshavebeenused.Whathappensinaneventoflogswitch？（）
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Inyourdatabase，youmaybeforcedtoperformarecoveryusingtheRESETLOGSoptionduringwhichtheredologswouldberesettosequencenumber1.Youwanttoavoidtheoverwritingofoldlogfiles.Whicharchivedlogfilenameformatensuresthis？（）A.%t_%s.dbfB.arch_%t.arcC.arch_%d.arcD.arch_%t_%d.arcE.arch_%d_%s_.dbfF.arch_%t_%s_%r.arc
考题
下列属于基本GARCH模型存在的局限性的是（ ）。A.ARCH/GARCH模型没有在当期的条件异方差与条件均值之间建立联系。
B.ARCH/GARCH模型都无法解释金融资产收益率中的杠杆效应
C.非负线性约束条件在估计ARCH/GARCH模型的参数的时候被违背
D.ARCH/GARCH模型的波动率不随时间的变化，且线性依赖过去的收益
考题
在Linux2.4或者2.6内核中，和ARM体系结构相关的中断处理程序的C代码在源码树的（）文件中A、kernerl/irq.cB、arch/arm/kernel/irq.cC、arch/arm/mach/irq.cD、arch/arm/kernel/entry-armv.S
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未定义指令异常的C处理函数在（）文件中定义。A、arch/arm/kernel/traps.cB、arch/arm/mm/fault.cC、arch/arm/mm/irq.cD、arch/arm/calls.S
考题
In your database， you may be forced to perform a recovery using the RESETLOGS option during which the redo logs would be reset to sequence number 1. You want to avoid the overwriting of old log files. Which archived log file name format ensures this？ （）A、%t_%s.dbfB、arch_%t.arcC、arch_%d.arcD、arch_%t_%d.arcE、arch_%d_%s_.dbfF、arch_%t_%s_%r.arc
考题
You want to set the following initialization parameters for your database instance： LOG_ARCHIVE_DEST_1 = ’LOCATION=/disk1/arch’ LOG_ARCHIVE_DEST_2 = ’LOCATION=/disk2/arch’ LOG_ARCHIVE_DEST_3 = ’LOACTION=/disk3/arch’ LOG_ARCHIVE_DEST_4 = ’LOCATION=/disk4/arch MANDATORY’ Identify the statement that correctly describes this setting.（） A、 The MANDATORY location must be a flash recovery area.B、 The optional destinations may not use the flash recovery area.C、 This setting is not allowed because the first destination is not set as MANDATORY.D、 The online redo log file is not allowed to be overwritten if the archived log cannot be created in the fourth destination.
考题
单选题You have configured flash recovery area in your database and you set the following Initialization parameters for your database instance： LOG_ARCHIVE_DEST 1 = ，，LOCATION=/disk1/arch MANDATORY’ LOG _ARCHIEVE_DEST 2 = ，，LOCATION=/disk2/arch’ LOG_ARCHIVK_DEST_3 = ，，LOCATION=/diSk3/arch LOG_ARCH1VK_DEST_4 = ’ LOCATION=/disk4/arch’ LOG_ARCHIVE_MIN-SUCCEED_DEST = 2 While the database instance is functional，you realized that the destination set by the LOG_ARCHIVE_DEST_I parameter Is not available for the archived redo log file to be created in. All redo log groups have been used. What happens in an event of log switch？（）A
The online redo log file Is not allowed to be overwritten.B
The archived redo log files are written to the flash recovery area until the MANDATORY destination is made available.C
The database instance will crash because the archived redo log file cannot be created in a destination set as MANDATORY.D
The destination set by the LOG_ARCHIVE_DEST_1 parameter is ignored and the archived redo log files are created in the next two available locations to guarantee archive log success.
考题
单选题You want to set the following initialization parameters for your database instance： LOG_ARCHIVE_DEST_1 = ’LOCATION=/disk1/arch’ LOG_ARCHIVE_DEST_2 = ’LOCATION=/disk2/arch’ LOG_ARCHIVE_DEST_3 = ’LOACTION=/disk3/arch’ LOG_ARCHIVE_DEST_4 = ’LOCATION=/disk4/arch MANDATORY’ Identify the statement that correctly describes this setting.（）A
The MANDATORY location must be a flash recovery area.B
The optional destinations may not use the flash recovery area.C
This setting is not allowed because the first destination is not set as MANDATORY.D
The online redo log file is not allowed to be overwritten if the archived log cannot be created in the fourth destination.
考题
多选题Archive file format LOG_ARCHIVE_FORMAT is defined as arch_%s.arc. A week ago， you just archived arch_4.arch to tape， then removed all archived files to save disk space. Yesterday you saw arch_10.arc and arch_11.arc on the disk. Today， you see arch_3.arc in the archive directory. Which two could you happened？（）ARedo logs were restored from tape for recovery.BThe file names are only used when they are copied to tape.CThe database was opened with the RESETLOGS option and log numbers restarted.DLog names run in circular fashion; arch_3.arc is re-created by the ARCn process.EA file name is randomly chosen by the archive process; as long as it is unique, it does not have to be sequential.
考题
单选题下列关于基本GARCH模型说法不正确的是（ ）。A
ARCH模型假定波动率不随时间变化B
非负线性约束条件（ARCH/GARCH模型中所有估计参数必须非负）在估计ARCH/GARCH模型的参数的时候被违背C
ARCH/GARCH模型都无法解释金融资产收益率中的杠杆效应D
ARCH/GARCH模型没有在当期的条件异方差与条件均值之间建立联系
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