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 fi

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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（）

showmount

exportfs

refresh -g nfs

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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 dfB showmountC exportfsD refresh -g nfs

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第2题

单选题You are developing an application that runs by using the credentials of the end user. Only users who are members of the Administrator group get permission to run the application. You write the following security code to protect sensitive data within the application.bool isAdmin=false； WindowsBuiltInRole role=WindowsBuiltInRole.Administrator； ...... if（!isAdmin） throw new Exception（"User not permitted"）； You need to add a code segment to this security code to ensure that the application throws an exception if a user is not a member of the Administrator group. Which code segment should you use？（）AABBCCDD

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第3题

单选题A System p administrator wants to NFS mount a filesystem from server "alpha" to server "bravo". Which of the following commands should be issued from "bravo" to determine which filesystems are being exported by server "alpha"（）A lsexport alphaB showmount -e alphaC exportfs -l alphaD mount -e nfs alpha

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第4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？（）AGather information from users.BReboot the server.CApply the latest service packs to the operating system.DPerform a root cause analysis.

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单选题An administrator is planning an upgrade of a major software package on an application server.The software has been identified， the project approved and the upgrade purchased. Which of the following steps should the administrator take NEXT？（）A Create a test environment for the new version.B Determine system requirements for the upgrade.C Request bids from other competing vendors in the product space.D Document the upgrade.

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单选题The system administrator has requested that all setuid/setgid bits be removed from executables in application filesystem. Which command will achieve this?（）A chmod -R o-s /applicationB chmod -R ug-s /applicationC chmod -R -s -o /applicationD chmod -R -s -ug /application

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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 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 fi

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