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单选题
An administrator has received complaints from users that an application is not available while other applications run. This application resides on an NFS mounted filesystem. Which of the following commands should be run as a reasonable first step to handle this problem？（）
A
df
B
showmount
C
exportfs
D
refresh -g nfs
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单选题everal people in an finance customer IT department are asking for fileset updates that the system administrator received from IBM earlier that day on CD-ROM. The system administrator created an install directory on their machine and made it available to everyone. Which of the following commands will allow the system administrator to copy the images from an IBM update CD-ROM to the install directory（）A
smit bffcreate from the target directoryB
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单选题The system administrator has been getting complaints about slow performance from the server. After running vmstat the administrator notices average readings that show the free list （fre） approaching zero， as well as page-in （pi） and page-out （po） values to be high. Furthermore， the applications running are essential to daily business operations. Which of the following recommendations would provide the best overall improvement？（）A
Increase physical diskB
Increase number of CPU’sC
Increase physical memoryD
Increase number of servers
考题
单选题An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC. If a reply is received, what does this confirm（）。A
The PC has connectivity with a local host.B
The PC has connectivity with a Layer 3 device.C
The PC has a default gateway correctly configured.D
The PC has connectivity up to Layer 5 of the OSI model.E
The PC has the TCP/IP protocol stack correctly installed.
考题
单选题An administrator is troubleshooting a problem on an application server, but has not determined the cause of the problem and is not able to replicate the problem. Which of the following should the administrator do prior to escalating the issue?（）A
Gather information from users.B
Reboot the server.C
Apply the latest service packs to the operating system.D
Perform a root cause analysis
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单选题An administrator received a call from a user whose PC crashed while using vi to edit a file. The user wants the edited file back. Where should the administrator look for the file（）A
/tmpB
/var/preserveC
/var/tmp/$USERD
$HOME/.vi
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单选题An administrator is troubleshooting a problem on an application server， but has not determined the cause of the problem and is not able to replicate the problem. Which of the following should the administrator do prior to escalating the issue？（）A
Gather information from users.B
Reboot the server.C
Apply the latest service packs to the operating system.D
Perform a root cause analysis.
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单选题An administrator has received an update CD with the latest technology level for AIX 5.3. The current operating system level of the server is at base AIX 5.3. What action needs to be taken to apply the new technology level to the server？（）A
Run smit update_allB
Run smit install_allC
Boot from the installation mediaD
Run the update_all command from the mounted CD
考题
单选题Several users from the same location are reporting problems accessing the intranet server. An administrator has verified that no other remote areas are having issues connecting to the same server. Which of the following steps should the administrator perform NEXT?（）A
Determine what has changedB
Test a solution.C
Establish the most probable causeD
Escalate the problem to the right section
考题
单选题In a Bridged 1483 network, an ISP has received complaints from their subscribers of denial of service attacks. The ISP suspects these attacks are coming from other subscribers that share the same IP unnumbered interface on the ERX. What can be done to solve this problem?（）A
Enable Proxy ARP.B
Disable Proxy ARP.C
Enable Inverse ARP.D
Disable Inverse ARP.
考题
单选题An administrator receives reports from users in an office that their 802.11g wireless connectivity has been problematic since the installation of the new wireless phone system. At which of the following frequencies are both systems operating at to cause this issue?（）A
2.4GHzB
900MHzC
1.1GHzD
5GHz
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