IBM(000-234)章節(jié)練習(2019.05.05)

單項選擇題
A System Administrator needs to determine if the system has the latest version of perfmgr and if the filesets copied to the /tmp directory are the latest. Which of the following command sequences would be required to accomplish this？（）
A. lslpp -l perfmgr.* ； cd /tmp ； installp -ld
B. smitty list_software ； oslevel -g
C. smitty list_software ； lslpp -f perfmgr*
D. cd /usr/sys/install.images ； ls -la ； cd /tmp ； ls -la
單項選擇題
The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）
A. mklv -t jfslog -y LVname VGname 1 PVname     logform /dev/LVname      chfs -a log=/dev/LVname /filesystemname m     ount and unmount filesystem
B. mklv -t jfslog -y LVname VGname PVname       unmount filesystem        vi /etc/filesystems， change entry for lv to point filesystem to new JFS log       mount filesystem
C. mklvcopy -a jfslog -y LVname VGname 1 PVname       chfs -a log=/dev/LVname /filesystemname       unmount and mount file system
D. mklvcopy -t jfslog -y LVname VGname 1 PVname       logform /dev/LVname        vi /etc/filesystems， change entry for lv to point filesystem to new JFS log      unmount and mount filesystem
單項選擇題
To examine the Exhibit， press the Exhibit button. While a user is compiling a C program， "vmstat 120 10" is run to determine the cause of a performance problem. Given the vmstat output as shown in the exhibit， which of the following conclusions should be drawn about the I/O bottleneck？（）
A. There is a file I/O bottleneck.
B. There are too many open files.
C. There appears to be a buffer shortage.
D. There is a paging space I/O bottleneck.
單項選擇題
The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log， loglv00 and one filesystem， /mydatabase. There are no other logical volumes on this disk. Which of the following options would be the best solution？（）
A. Increase the size of the JFS log logical volume so more transacations can be written to this log.
B. Create a second， additional JFS log and have the /mydatabase logical volume point to both JFS logs.
C. Migrate the JFS log device to another physical disk in the same volume group.
D. Only one JFS log device for each volume group can be used. Use the migratepv command to move the JFS log device to an empty disk in another volume group.
單項選擇題
Page replacements algorithm steals file pages only when percent of RAM occupied by filepages（）
A. falls below minperm.
B. is between minperm and maxperm.
C. higher than maxperm.
D. lower than maxperm.
單項選擇題
After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）
A. Not enough NFS daemons running
B. Too many NFS daemons running
C. nfs_tcp_socketsize is too small
D. nfs_tcp_socketsize is too large
單項選擇題
In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）
A. tprof
B. iostat
C. svmon
D. filemon
單項選擇題
Which of the following commands should be used to view and change the network filesystem tuning parameters available on the system？（）
A. no
B. nfso
C. vmtune
D. exportfs
單項選擇題
When trying to run topas on an AIX 4.3.x system， the system administrator gets the error message "ksh： topas： not found." Which of the following options is the most likely reason this occurred？（）
A. The fileset bos.perf.tools is not loaded on this system.
B. The fileset perfagent.tools is not loaded on this system.
C. The command topas is only available in AIX version 5.x.
D. The path variable does not include /usr/samples/kernel/. Either add it to the .profile or cd to that location and run the command again.
單項選擇題
Which of the following commands is used to adjust the minperm and Maxperm values of real memory to 4% and 80%？（）
A. vmtune -N4 -M80
B. vmtune -f4 -F80
C. vmtune -l4 -L80
D. vmtune -p4 -P80

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IBM(000-234)章節(jié)練習(2019.05.05)

A System Administrator needs to determine if the system has the latest version of perfmgr and if the filesets copied to the /tmp directory are the latest. Which of the following command sequences would be required to accomplish this？（）

The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）

To examine the Exhibit， press the Exhibit button. While a user is compiling a C program， "vmstat 120 10" is run to determine the cause of a performance problem. Given the vmstat output as shown in the exhibit， which of the following conclusions should be drawn about the I/O bottleneck？（）

Page replacements algorithm steals file pages only when percent of RAM occupied by filepages（）

After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）

In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）

Which of the following commands should be used to view and change the network filesystem tuning parameters available on the system？（）

When trying to run topas on an AIX 4.3.x system， the system administrator gets the error message "ksh： topas： not found." Which of the following options is the most likely reason this occurred？（）

Which of the following commands is used to adjust the minperm and Maxperm values of real memory to 4% and 80%？（）

IBM(000-234)章節(jié)練習(2019.05.05)

A System Administrator needs to determine if the system has the latest version of perfmgr and if the filesets copied to the /tmp directory are the latest. Which of the following command sequences would be required to accomplish this？（）

The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）

Page replacements algorithm steals file pages only when percent of RAM occupied by filepages（）

After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）

In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）

Which of the following commands should be used to view and change the network filesystem tuning parameters available on the system？（）

When trying to run topas on an AIX 4.3.x system， the system administrator gets the error message "ksh： topas： not found." Which of the following options is the most likely reason this occurred？（）

Which of the following commands is used to adjust the minperm and Maxperm values of real memory to 4% and 80%？（）

A System Administrator needs to determine if the system has the latest version of perfmgr and if the filesets copied to the /tmp directory are the latest. Which of the following command sequences would be required to accomplish this？（）

The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）

After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）

In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）

When trying to run topas on an AIX 4.3.x system， the system administrator gets the error message "ksh： topas： not found." Which of the following options is the most likely reason this occurred？（）