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【单选题】

A member variable defined in a class can be accessed only by the classes in the same package. Which modifier should be used to obtain the access control？（）         

A、 private

B、 no modifier

C、 public

D、 protected

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更多“A member variable defined in a class can be accessed only by the classes in the same package. Which modifier should be used to obtain the access control？（）         ”相关的问题
第1题
[单选题] The performance of your database is affected by the presence of two log members in each online redo log group and the placement of redo log members of a group on the same disk. You decide to place the redo log members of a group on separate disks. Which view will you query to find the name and location of all the online redo log members？（）

A、 V$LOG  B、 V$LOGFILE  C、 DBA_LOG_GROUPS  D、 V$LOG_HISTORY  

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第2题
[单选题] Windows Communication Foundation （WCF） application uses a data contract that has several data members. You need the application to throw a Serialization Exception if any of the data members are not present when a serialized instance of the data contract is deserialized. What should you do？（）

A、 Add the Known Type attribute to the data contract.Set a default value in each of the data member declarations.  B、 Add the Known Type attribute to the data contract.Set the Order property of each data member to unique integer value.  C、 Set the Emit Default Value property of each data member to false.  D、 Set the Is Required property of each data member to true.  

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第3题
[单选题] One of the redo log members in your database is lost. You queried V$logfile for further details. What would be the member’s status？（）

A、LOST  B、INVALID  C、EXPIRED  D、DELETED  E、CORRUPT  F、UNKNOWN  H、OBSOLETE  

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第4题
[单选题] Router R-1 is configured for BGP routing as shown below： router bgp 65300network 27.0.0.0neighbor 192.23.1.1 remote-as 65300 From the perspective of router R-1， what kind of router is the router with IP address 192.23.1.1？（）

A、A peer router running IBGP  B、A peer router running EBGP  C、A community member running IBGP  D、A peer group member running IBGP  E、A peer group member running EBGP  

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第5题
[单选题] What must be the same to make multiple switches part of the same Multiple Spanning Tree （MST）？（）

A、VLAN instance mapping and revision number  B、VLAN instance mapping and member list  C、VLAN instance mapping， revision number， and member list  D、VLAN instance mapping， revision number， member list， and timers  

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第6题
[单选题] A staff member reports that they cannot access the shared folder on the network； however， other staff members are reporting that they can access the shared folder. Which of the following is the BEST way to identify the problem？（）

A、The administrator should monitor all traffic between the staff member and the server.  B、The administrator should reconfigure the RAID configuration to allow more space.  C、The administrator should map a drive using the net use command.  D、The administrator should allow the staff member to use a USB drive.  

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第7题
[多选题] In your database， the Log Writer （LGWR）  process is unable to write to a member of a current redo log group due to read/write failure. Which two effects would you see in your database？（）

A、The database instance aborts.  B、The database operation temporarily halts till the member becomes available.  C、Writing proceeds as normal. LGWR writes to the available members of a group and ignores the unavailable members.  D、The member would be marked as STALE and an error message would be written to the alert log file and LGWR trace file.  E、The status of the group changes to INACTIVE and an error message would be written to the alert log file and LGWR trace file.  

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第8题
[单选题] In your database， online redo log files are multiplexed and one of the members in a group is lost due to media failure？ How would you recover the lost redo log member？（）

A、 import the database from the last export  B、 restore all the members in the group from the last backup  C、 drop the lost member from the database and then add a new member to the group  D、 restore all the database files from the backup and then perform a complete recovery  E、 restore all the database files from the backup and then perform an incomplete recovery  

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第9题
[多选题] In your database， the Log Writer （LGWR） process is unable to write to a member of a current redo log group due to read/write failure. Which two effects would you see in your database？（）

A、The database instance aborts.  B、The database operation temporarily halts till the member becomes available.  C、Writing proceeds as normal. LGWR writes to the available members of a group and ignores the unavailable members.  D、The member would be marked as STALE and an error message would be written to the alert log file and LGWR trace file.  E、The status of the group changes to INACTIVE and an error message would be written to the alert log file and LGWR trace file.  

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第10题
[] Redo log files are multiplexed in your database. The disk in which you have one of the redo log members is highly fragmented. In the process of defragmentation you lose the redo log member， which is not a member of the current group. How would you recover from the loss of the redo log member？（）

A、A.SMON would automatically restore the lost file.  B、B.You would need to restore the whole database from the last backup.  C、C.You would need to restore the file from the last full database backup.  D、D.You would need to use flashback technology to restore the lost redo log member.  E、E.You would need to use Recovery Manager （RMAN） to restore the lost redo log member.  F、F.You would need to restore the missing log file by copying one of the remaining files from the same group.  

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