單項(xiàng)選擇題

Given the following on a system that is not a name server， which will be the first area searched to resolve a host name to an IP address？（）
#cat /etc/resolv.conf
domain abc.century.com
nameserver 192.9.201.1
nameserver 192.9.201.2
#cat /etc/netsvc.conf
hosts = bind，nis，local
#echo $NSORDER
local，bind

A. /etc/hosts on server 192.9.201.2
B. /etc/hosts on the local system
C. /etc/named.rev on 192.9.201.1
D. /etc/netsvc.conf on the NIS server

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An AIX system， which is running a database， is having performance issues with I/O writing. The DBA has provided numbers for the HIGH and LOW watermarks for pending file writes， which will optimize the system for best performance. To set these numbers， which of the following commands would be used？（）

A. perfmon -h 30 -l 25
B. chdev
C. no -o
D. smit chgsys

單項(xiàng)選擇題

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？（）

A. N times the stripe unit size
B. N times the VMM minfree parameter
C. The same value as that of the VMM maxfree parameter
D. The same value as that of the VMM maxrndwrt parameter

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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？（）

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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？（）