50帮忙做个选择题

来源:百度知道 编辑:UC知道 时间:2024/05/29 13:40:39
A z/OS application program accesses a dataset using DDNAME =ALLDATA.The Program opens the dataset and reads all of the data from start to finish.Which of the following determines whether this dataset resides on DASD(disk)or tape?
A.DDNAME indicates it resides on disk
B.Parameters on the EXEC JCL statement
C. The UNIT information in the catalogue
D.The JCL statement with format://datasetname DD DDNAME=ALLDATA

翻译:一个z / OS的应用程序访问一个DataSet使用DDNAME = ALLDATA.The计划打开数据和读取的所有数据从一开始到结束.以下哪个判断此数据集驻留在磁盘或磁带?
A;DDNAME表明它驻留在磁盘
湾参数对Exec的JCL声明
c.在单位信息目录
d.在JCL语句格式: / / datasetname日DDNAME = ALLDATA
选C

c

c