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考题
贵阳市科杰电脑培训学校 二级 C、二级 VF 培训班承诺考试不合格退培训费 电话:0851-5561184 网址:www（20）设有一组作业，它们的作业提交时刻及估计运行时间如下所示：作业号 提交时刻 估计运行时间（分钟）Job1 8：30 70Job2 9：10 30Job3 9：30 15Job4 9：50 5在单道批处理方式下，采用短作业优先调度算法，作业的执行顺序为;A）Job1，Job4，Job3，Job2B）Job1，Job3，Job4，Job2C）Job4，Job3，Job2，Job1D）Job4，Job1，Job2，Job3
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（19）设有一组作业，它们的提交时刻和估计运行时间如下所示：作业名 提交时刻 估计运行时间（分钟）job1 10:00 50job2 10:10 30job3 10:30 10job4 10:50 5
考题
在一个四道作业的操作系统中，设在一段时间内先后到达6个作业，他们的提交时刻和运行时间见表1。系统采用短作业优先的调度算法，作业被调入运行后不再退出，但每当一作业进入运行时，可以调整运行的优先次序。按照上述调度原则，JOB1、JOB3、JOB5、JOB6的结束时间分别是(18)、(19)、(20)、(21)，作业的平均周转时间是(22)分钟。A．9:00B．9:20C．9:25D．10:35
考题
Which of the following tasks is not performed by the job coordinator?()
A. Update job log when a job completesB. Spawn and remove job slavesC. Write/read job info to/from memory cacheD. Query job tableE. Pass job information to job slaves
考题
You notice that the elapsed time for an important database scheduler Job is unacceptably long.The job belongs to a scheduler job class and window.Which two actions would reduce the job‘s elapsed time?（）A. Increasing the priority of the job class to which the job belongsB. Increasing the job‘s relative priority within the Job class to which it belongsC. Increasing the resource allocation for the consumer group mapped to the scheduler job‘s job class within the plan mapped to the scheduler windowD. Moving the job to an existing higher priority scheduler window with the same schedule and durationE. Increasing the value of the JOB_QUEUE_PROCESSES parameterF. Increasing the priority of the scheduler window to which the job belongs
考题
假设有6个作业job1，job2，…，job6；完成作业的收益数组p=(p[1],p[2],p[3],p[4],p[5],p[6])=(90,80,50,30,20,10)；每个作业的处理期限数组d=(d[1],d[2],d[3],d[4],d[5],d[6])=(1,2,1,3,4,3)。请应用试题中描述的贪心策略算法，给出在期限之内处理的作业编号序列(4) (按作业处理的顺序给出)，得到的总收益为(5)。
考题
某单道批处理系统中有四个作 JOBl、JOB2、JOB3、JOB4，它们到达“输入井”的时刻和所需要的运行时间如下表所示。作业 进入系统时间 估计运行时间(分钟)JOB1 8：30 80JOB2 8：50 20JOB3 9：20 40JOB4 9：30 35假设9：30开始作业调度，按照最高响应比作业优先算法，首先被调度的作业是______。A．JOB1B．JOB2C．JOB3D．JOB4
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某单道批处理系统中有四个作业JOB1、JOB2、JOB3和JOB4，它们到达“输入井”的时刻和需要的运行时间如下表假设9：30开始进行作业调度，按照最高响应比作业优先算法，首先被调度的作业是A．JOB1B．JOB2C．JOB3D．JOB4
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设有一组作业，它们提交时刻和估计运行时间如下所示： 作业名 提交时刻 估计运行时间(分钟) Job1 10:00 50 Job2 10:10 30 Job3 10:30 10 Job4 10:50 5 在10:50 时刻开始进行作业调度，调度采用最高响应比优先算法，第一个被选中执行的作业是A．Job1B．Job2C．Job3D．Job4
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设有一组作业，它们的作业提交时刻及估计运行时间如下所示： 作业号 提交时刻 估计运行时间(分钟) Job1 8：30 70 Job2 9：10 30 Job3 9：30 15 Job4 9：50 5 在单道批处理方式下，采用短作业优先调度算法，作业的执行顺序为A．Job1，Job4，Job3，Job2B．Job1，Job3，Job4，Job2C．Job4，Job3，Job2，Job1D．Job4，Job1，Job2，Job3
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在一个四道作业的操作系统中，设在一段时间内先后到达6个作、他们的提交时刻和运行时间如表5—1所示。系统采用短作业优先的调度算法，作业被凋入运行后不再退出，但每当一作业进入运行时，可以调整运行的优先次序。按照上述调度原则，JOB1、JOB3、JOB5、JOB6的结束时间分别是(36)、(37)、(38)、(39)，作业的平均周转时间是(40)分钟。A．9:00B．9:20C．9:25D．10:35
考题
列出EMP表中,从事每个工种(JOB)的员工人数()
A.select job from emp;B.select job,count(*) from emp;C.select distinct job,count(*) from emp;D.select job,count(*) from emp group by job;E.select job,sum(empno) from emp group by job;
考题
While creating a job class using the DBMS_SCHEDULER package， you set the logging level to LOGGING_RUNS. What would be the impact of this setting？（）A、 Oracle Scheduler would write detailed information to the job log for each run of each job in the job class.B、 Oracle Scheduler would write detailed information to the job log for the first run of each job in the job class.C、 Oracle Scheduler would write detailed information to the job log for each run of only the first job in the job class.D、 Oracle Scheduler would write detailed information for all operations performed on all jobs in the job class.
考题
You notice that the elapsed time for an important database scheduler Job is unacceptably long. The job belongs to a scheduler job class and window. Which two actions would reduce the job's elapsed time?（）A、Increasing the priority of the job class to which the job belongsB、Increasing the job's relative priority within the Job class to which it belongsC、Increasing the resource allocation for the consumer group mapped to the scheduler job's job class within the plan mapped to the scheduler windowD、Moving the job to an existing higher priority scheduler window with the same schedule and durationE、Increasing the value of the JOB_QUEUE_PROCESSES parameterF、Increasing the priority of the scheduler window to which the job belongs
考题
Which of the following tasks is not performed by the job coordinator？（）A、 Update job log when a job completesB、 Spawn and remove job slavesC、 Write/read job info to/from memory cacheD、 Query job tableE、 Pass job information to job slaves
考题
列出EMP表中，从事每个工种（JOB）的员工人数（）A、select job from emp;B、select job,count(*) from emp;C、select distinct job,count(*) from emp;D、select job,count(*) from emp group by job;E、select job,sum(empno) from emp group by job;
考题
单选题When setting arguments for a job, which procedure do you use for types that cannot be implicitly converted to and from a VARCHAR2 datatype?（）A
SET_JOB_ARGUMENT_VALUEB
SET_JOB_VALUE_ANYDATAC
SET_JOB_ANYDATA_VALUED
SET_SPECIAL_JOB_VALUEE
SET_JOB_ANYTYPE_VALUE
考题
单选题While creating a job class using the DBMS_SCHEDULER package， you set the logging level to LOGGING_RUNS. What would be the impact of this setting？（）A
Oracle Scheduler would write detailed information to the job log for each run of each job in the job class.B
Oracle Scheduler would write detailed information to the job log for the first run of each job in the job class.C
Oracle Scheduler would write detailed information to the job log for each run of only the first job in the job class.D
Oracle Scheduler would write detailed information for all operations performed on all jobs in the job class.
考题
单选题Which of the following tasks is not performed by the job coordinator？（）A
Update job log when a job completesB
Spawn and remove job slavesC
Write/read job info to/from memory cacheD
Query job tableE
Pass job information to job slaves
考题
单选题William is creating a job class. William specifies the LOGGING_FULL setting for the LOGGING_LEVEL attribute at the time of job class creation. What is the impact of using this setting？（）A
Detailed information regarding the first run of each job in the class will be written in the job log， and every operation performed on the job class will be logged.B
Detailed information regarding each run of only the first job in the class will be written in the job log， and every operation performed on the job class will be logged.C
Detailed information regarding each run of each job in the class will be written in the job log， and every operation performed on the job class will be logged.D
Detailed information regarding each run of each job in the class will be written in the job log， but operations performed on the job class will not be logged.
考题
单选题Which of the following tasks is not performed by the job coordinator?（）A
Update job log when a job completesB
Spawn and remove job slavesC
Write/read job info to/from memory cacheD
Query job tableE
Pass job information to job slaves
考题
多选题You notice that the elapsed time for an important database scheduler Job is unacceptably long. The job belongs to a scheduler job class and window. Which two actions would reduce the job's elapsed time?（）AIncreasing the priority of the job class to which the job belongsBIncreasing the job's relative priority within the Job class to which it belongsCIncreasing the resource allocation for the consumer group mapped to the scheduler job's job class within the plan mapped to the scheduler windowDMoving the job to an existing higher priority scheduler window with the same schedule and durationEIncreasing the value of the JOB_QUEUE_PROCESSES parameterFIncreasing the priority of the scheduler window to which the job belongs
考题
单选题列出EMP表中，从事每个工种（JOB）的员工人数（）A
select job from emp;B
select job,count(*) from emp;C
select distinct job,count(*) from emp;D
select job,count(*) from emp group by job;E
select job,sum(empno) from emp group by job;
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