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Making data appear to come from somewhere other than the originating point is known as： （）
- A、social engineering
- B、spoofing
- C、hacking
- D、cracking
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38、【单项选择题】
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IP multicasting is a set of technologies that enable efficient delivery of data to many locations on a network. Rather than making multiple copies of a message intended to be distributed to multiple recipients at the （） of origin of a message, multicasting initially sends just one （） and does not copy it to the individual recipients until it reaches the closest common point on the network, thereby （） the bandwidth consumed. Network performance is significantly （） because it isn’t bogged down with the processing and transmission of several large data files; each receiving computer doesn’t have to （） the transmitting server for the file.A.extending
B.minimizing
C.demolishing
D.reducing
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IP multicasting is a set of technologies that enable efficient delivery of data to many locations on a network. Rather than making multiple copies of a message intended to be distributed to multiple recipients at the （） of origin of a message, multicasting initially sends just one （） and does not copy it to the individual recipients until it reaches the closest common point on the network, thereby （） the bandwidth consumed. Network performance is significantly （） because it isn’t bogged down with the processing and transmission of several large data files; each receiving computer doesn’t have to （） the transmitting server for the file.A.loop
B.find
C.search
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The DB_BLOCK_CHECKINGinitialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（）A、 The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.B、 The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.C、 The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.D、 The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.E、 The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.
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单选题In bringing up the concept of GASP the author is making the point that ______.A
shareholders interests should be properly attended toB
information protection should be given due attentionC
businesses should enhance their level of accounting securityD
the market value of customer data should be emphasized
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单选题Making data appear to come from somewhere other than the originating point is known as： （）A
social engineeringB
spoofingC
hackingD
cracking
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单选题You issued the following commands to configure setting in RMAN; Then you issued the following command to take the backup: RMAN BACKUP DATABASE PLUS ARCHIVELOG; Which statement is true about the execution of the above command?（）A
The backup will terminate because the FORMAT clause was not configured for the channelB
It backs up two copies of data files to tape and disk, and two copies of archived log file on tapeC
It backs up the data files and archived log files to disk, making two copies of each data file and archived log fileD
It backs up the data files and archived log files to tape, making two copies of each data file and archived log file
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单选题Your database is set in NOARCHIVELOG mode and is backed up every night. There are 10 redo log groups on the database， each with three members， making a total of 30 redo log files. At lunchtime the server unexpectedly gets shut down. Upon restarting you notice that the data file belonging to the SYSTEM tablespace has become corrupted. You also notice that there have been 15 log switches during the day. Which solution should you use to recover as much committed data as possible？（）A
Restore the data file for the SYSTEM tablespace then open the database. B
Restore all redo logs form last night's backup, then restart the database. C
Perform a complete restore of all files from last night's backup. Data entered into the database today must be reentered. D
Mount the instance, take the SYSTEM tablespace offline, open the database, and then restore the data file, recover it, and bring the tablespace online.
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单选题With regard to the drivers behind Application Grid based computing， consider the following statements and indicate which is TRUE:// （） I. data center complexity leads to lack of predictability making it difficult if not impossible to guarantee quality of service II. data centers must do more with less and find a way to better utilize existing capacity III. growth means added complexityA
I and IIB
I and IIIC
II and IIID
I， II and III
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单选题You issued the following commands to configure setting in RMAN; RMAN CONFIGURE DEVICE TYPE sbt PARALLELISM 1; RMAN CONFIGURE DEFAULT DEVICE TYPE TO sbt; RMAN CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE sbt TO 2; RMAN CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE sbt TO 2; RMAN CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2; Then you issued the following command to take the backup: RMAN BACKUP DATABASE PLUS ARCHIVELOG; Which statement is true about the execution of the above command?（）A
The backup will terminate because the FORMAT clause was not configured for the channelB
It backs up two copies of data files to tape and disk, and two copies of archived log file on tapeC
It backs up the data files and archived log files to disk, making two copies of each data file and archived log fileD
It backs up the data files and archived log files to tape, making two copies of each data file and archived log file
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单选题The DB_BLOCK_CHECKINGinitialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（）A
The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.B
The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.C
The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.D
The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.E
The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.
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