N times the stripe unit size
N times the VMM minfree parameter
The same value as that of the VMM maxfree parameter
The same value as that of the VMM maxrndwrt parameter
第1题：
In order to ensure best read performance， which of the following indicates how large an application’s read buffer size should be if the filesystem to be read is striped across N disks using LVM striping？（）
第2题：
A technician notices a machine’s performance has degraded. The machine has constant errorswhen trying to read data from the drive. Which of the following should be used to repair the disk errors?（）
第3题：
下列程序使用系统标准输入System.in从键盘获得输入字符串，请选择正确的一项填入下列程序的横线处。 import java.io.*; public class ex26 { public static void main(String args[]) { byte buffer[] = new byte[128]; int n; try { n = for(int i = 0; i ＜ n; i++) System.out .print ( (char)buffer [i] ); catch (IOException e) { System.out.print (e); } } }
A．System.in.read(buffer)
B．system.in.read(buffer)
C．System.in.read0
D．System.in(buffer)
第4题：
If an application issues the same query more than once in the same Unit of Work, which isolation level will not permit this application to see additional rows inserted by other applications?（）
第5题：
Application A currently holds an exclusive lock on a single row and application B tries to access that row. If lock timeout is set to -1 and both applications are using isolation level RS, which of the following will occur?（）
第6题：
下列语句中哪条是错误的（）？
第7题：
Which of the following BEST describes RAID 5？（）
第8题：
Which of the following RAID levels provides the BEST read and write performance？（）
第9题：
Which of the following is TRUE for the DB2 isolation level Cursor Stability (CS)?（）
第10题：
Application A holds an Update lock on a single row and application B is trying to read that row. If both applications are using isolation level UR, which of the following will occur?（）