Which two statements are true concerning the Resource Manager plans for individual pluggabledatabases (PDB plans) in a multitenant container database (CDB)?()
AIf no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.
BIn a PDB plan, subplans may be used with up to eight consumer groups.
CIf a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.
DIf no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.
EIf a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.
在现代的CPU芯片中又集成了高速缓冲存储器(Cache),其作用是( )。
A、扩大内存储器的容量
B、解决CPU与RAM之间的速度不匹配问题
C、解决CPU与打印机的速度不匹配问题
D、保存当前的状态信息
You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue()
ADisable automatic checkpoint tuning.
BCheck the size of the redo log file size and increase the size if it is small.
CSet the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.
DDecrease the number of redo log members if there are more than one redo log members available in each redo log group.
Which of the following laptop hardware components requires a re-soldering process in order toreplace properly?()
A、Mini PCIe wireless card
B、Heat sink
C、DC jack
D、Li-Ion battery
Click the Exhibit button to examine the structures of the EMPLOYEES and TAX tables. You need to find the percentage tax applicable for each employee. Which SQL statement would you use?()
A、 SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t ON e.salary BETWEEN t.min_salary AND t.max_salary;
B、 SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t WHERE e.salary > t.min_salary AND < t.max_salary;
C、 SELECT employee_id, salary, tax_percent FROM employees e JOIN tax t ON (MIN(e.salary) = t.min_salary AND MAX(e.salary) = t.max_salary);
D、 You cannot find the information because there is no common column between the two tables.
Which of the following is an advantage of upgrading to a 64-bit version of Windows? ()
A、A greater number of dynamic disks or disks larger than 1 TB can be supported.
B、Multiple applications running in 16-bit compatibility mode are supported.
C、More than 4GB of RAM, in some cases up to 128GB of RAM can be supported.
D、A new anti-virus protection scheme called Data Execution Prevention is supported.