输入输出input and output(I/O)
第1题:
A. The FRA disk group has an asynchronous I/O bottleneck
B. The least number of I/Os are performed on the last data file in the list
C. The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the list
D. The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group
第2题:
下列程序的功能是:将数据1,2,…,8写入顺序文件Num.txt中,请选择正确的程序段( )。 Private Sub Form_Click() Dim i As Integer Open "Num.txt" For Output As #1 For i=1 To 8 ______ Next i Close #1 End Sub
A.print #1,i
B.input #1,i
C.print #1
D.input #1
第3题:
操作系统的主要操作有( )。Ⅰ.进程Ⅱ.内存分配Ⅲ.文件输入输出(I/O)Ⅳ.设备输入输出(I/O)
A.Ⅰ、Ⅱ、Ⅲ
B.Ⅰ、Ⅳ
C.Ⅰ、Ⅲ
D.全部
第4题:
I/O信号是指输入输出信号。()
第5题:
第6题:
A. Limiting the input/output (I/O) bandwidth consumption
B. Specifying the size of backup sets and backup pieces
C. Specifying vendor-specific information for a media manager
D. Specifying the parallelism for backup and restore operations
第7题:
Most operating systems have a standard set of () to handle the processing of all input and output instructions.
A.spreadsheet
B.control instructions
C.I/O operation
D.data table
第8题:
下列程序的功能是:将数据1,2,......,8写入顺序文件Num.txt中,请选择正确的程序段 Private Sub Form_Click() Dim i As Integer Open "Num.txt"For Output As #1 For i=1 To 8 ______ Next i Close #1 End SubA.print#1,i B.input#1,i C.print#1 D.input#1
第9题:
第10题:
The basic units of a computer system are as follows()。