Which component of VPN technology ensures that data can be read only by its intended recipient?() A. data integrityB. encryptionC. key exchangeD. authentication
Which component of VPN technology ensures that data can be read only by its intended recipient?()
A. data integrity
B. encryption
C. key exchange
D. authentication
相关考题：
Examine the following command that is used to duplicate a database on the same host:Which two statements describe the effect after the database is duplicated successfully? () A. The data files of the read-only tablespaces in the target database are not duplicatedB. The read-only tablespaces in the target database are still defined in new the databaseC. The read-only tablespaces in the target database are changed to online after duplicationD. The data files of the read-only tablespaces in the target database get duplicatedE. The read-only tablespaces in the target database are not defined in the new database
A user copied files from a CD and now the files can only be opened as read－only. Which of the following utilities can be used to allow the user the ability to edit the files?() A.EDITB.CHMODC.ATTRIBD.CONVERT
Which two statements about subqueries are true? （）A、A single row subquery can retrieve data from only one table.B、A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.C、A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.D、A single row subquery can retrieve data from more than one table.E、A single row subquery cannot be used in a condition where the LIKE operator is used for comparison.F、A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.
Which two statements correctly describe the relation between a data file and the logical databasestructures（）A、An extent cannot spread across data files.B、A segment cannot spread across data files.C、A data file can belong to only one tablespace.D、A data file can have only one segment created in it.E、A data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.
You have enabled backup optimization for the RMAN environment.Identify two criteria on which RMAN will skip the file, if it has already been backed up.（）A、The data file backup is done with multiple channelsB、The data files is in the read-write mode after being backed up in the read only modeC、The backup was taken after the data files was taken offline-normal or is in the read only modeD、The data file backup complies with the back retention policy and the backup duplexing feature
Which component of VPN technology ensures that data can be read only by its intended recipient?（）A、data integrityB、encryptionC、key exchangeD、authentication
The Cisco UC520 provides integrated WLAN connectivity to mobile clients for which technology?（）A、voice onlyB、data and voiceC、data only
Which technology is best suited for the most scalable means to separate the data plane for aLayers VPN？（）A、 GREB、 802 1QC、 MPLSD、 L2TPv3
A user copied files from a CD and now the files can only be opened as read-only. Which of the following utilities can be used to allow the user the ability to edit the files?（）A、EDITB、CHMODC、ATTRIBD、CONVERT
Which three security concerns can be addressed by a tunnel mode IPsec VPN secured by ESP？（）A、data integrityB、data confidentialityC、data authenticationD、outer IP header confidentialityE、outer IP header authentication
You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） to perform backups in your databases. Which four backup operations can be performed using RMAN？（）A、A backup of the target database when it is mountedB、A backup of online redo log files when the database is openC、A backup of only used data blocks in the file beingbeingbackup upD、A backup of online， read/write data files when the database is openE、A backup of only those data blocks that have changed since a previous backupF、A backup of online， read/write data files when the database is in the NOMOUNT state.
Which two statements are true about simple views？（）A、Views can be created as read only.B、Views are data segments like tables.C、Views can be created on the basis of more than one table.D、Data manipulation language （DML） operations cannot be performed on views.
Examine the following command that is used to duplicate a database on the same host: RMAN RUN { ALLOCATE AUXILIARY CHANNEL, aux 1 DEVICE TYPE DISK; DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY; / } Which two statements describe the effect after the database is duplicated successfully? （）(Choose two)A、The data files of the read-only tablespaces in the target database are not duplicatedB、The read-only tablespaces in the target database are still defined in new the databaseC、The read-only tablespaces in the target database are changed to online after duplicationD、The data files of the read-only tablespaces in the target database get duplicatedE、The read-only tablespaces in the target database are not defined in the new database
Which three operations require undo data（）A、committing a transactionB、flashing back a transactionC、recovering a failed transactionD、running a read-consistent queryE、changing a tablespace status from READ ONLY to READ WRITE
The RECYCLEBIN parameter is set to ON for your database. You drop a table，PRODUCTS，from the SCOTT schema. Which two statements are true regarding the outcome of this action？（）A、 All the related indexes and views are automatically droppedB、 The flashback drop feature can recover only the table structureC、 Only the related indexes are dropped whereas views are invalidatedD、 The flashback drop feature can recover both the table structure and its data
Which files must be synchronized in order for a database to start？（）A、temp filesB、online data filesC、offline data filesD、read only data files
单选题Which component of VPN technology ensures that data can be read only by its intended recipient?（）Adata integrityBencryptionCkey exchangeDauthentication
多选题You work as a database administrator for Certkiller .com. You are using Recovery Manager （RMAN） to perform backups in your databases. Which four backup operations can be performed using RMAN？（）AA backup of the target database when it is mountedBA backup of online redo log files when the database is openCA backup of only used data blocks in the file beingbeingbackup upDA backup of online， read/write data files when the database is openEA backup of only those data blocks that have changed since a previous backupFA backup of online， read/write data files when the database is in the NOMOUNT state.
多选题Which two statements correctly describe the relation between a data file and the logical databasestructures（）AAn extent cannot spread across data files.BA segment cannot spread across data files.CA data file can belong to only one tablespace.DA data file can have only one segment created in it.EA data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.
多选题Which two statements are true about simple views？（）AViews can be created as read only.BViews are data segments like tables.CViews can be created on the basis of more than one table.DData manipulation language （DML） operations cannot be performed on views.
单选题Which technology is best suited for the most scalable means to separate the data plane for aLayers VPN？（）A GREB 802 1QC MPLSD L2TPv3
单选题Which component of VPN technology ensures that data can be read only by its intended recipient?（）AdataintegrityBencryptionCkeyexchangeDauthentication
多选题Examine the following command that is used to duplicate a database on the same host： RMAN RUN { ALLOCATE AUXILIARY CHANNEL， aux 1 DEVICE TYPE DISK； DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY； / } Which two statements describe the effect after the database is duplicated successfully？（）AThe data files of the read-only tablespaces in the target database are not duplicatedBThe read-only tablespaces in the target database are still defined in new the databaseCThe read-only tablespaces in the target database are changed to online after duplicationDThe data files of the read-only tablespaces in the target database get duplicatedEThe read-only tablespaces in the target database are not defined in the new database
多选题You have enabled backup optimization for the RMAN environment.Identify two criteria on which RMAN will skip the file, if it has already been backed up.（）AThe data file backup is done with multiple channelsBThe data files is in the read-write mode after being backed up in the read only modeCThe backup was taken after the data files was taken offline-normal or is in the read only modeDThe data file backup complies with the back retention policy and the backup duplexing feature
多选题Which three operations require undo data（）Acommitting a transactionBflashing back a transactionCrecovering a failed transactionDrunning a read-consistent queryEchanging a tablespace status from READ ONLY to READ WRITE
多选题Which operations require undo data（）ACommitting a transactionBFlashing back a transactionCRecovering a failed transactionDRunning a read-consistent queryEChanging a tablespace status from READ ONLY to READ WRITE
多选题You have enabled backup optimization for the RMAN environment. Identify two criteria on which RMAN will skip the file, if it has already been backed up.（） (Choose two.)AThe data file backup is done with multiple channelsBThe data files is in the read-write mode after being backed up in the read only modeCThe backup was taken after the data files was taken offline-normal or is in the read only modeDThe data file backup complies with the back retention policy and the backup duplexing feature