单项选择题A system administrator has placed an AIX base media CD-ROM in a server and initiated a reboot. The server has an ascii terminal attached to it. Which key or key combination must the administrator press to initiate the maintenance mode？（）

A.5
B.M
C.F8
D.Ctrl-Alt-Delete

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1.单项选择题A mirrored root disk needs to be replaced. Which of the following commands will clear the boot record on the failing disk？（）

A.chpv -c
B.rmlv hd5
C.bosboot -ad
D.rmdev -dl hd5

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2.单项选择题A system administrator has determined a root mirrored disk， hdisk1， needs to be replaced. The root volume has been unmirrored. What is the next step to remove the disk drive？（）

A.cfgmgr
B.rmdev -d hdisk1 -l
C.reducevg rootvg hdisk1
D.have the IBM CE replace the disk

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3.单项选择题Following a system boot， the display indicates that previously detected hardware is missing. What command should be used to identify the missing hardware？（）

A.diag
B.lscfg
C.cfgmgr
D.lsattr

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4.单项选择题A system’s backups are failing. Error log analysis indicates that there is either a hardware or media problem. Which command is used to determine if there is a hardware problem with the tape drive？（）

A.diag
B.lscfg
C.lsdev
D.cfgmgr

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5.单项选择题A system administrator would like to verify the user definitions in the /etc/passwd file. Which of the following commands will accomplish this？（）

A.usrck
B.sysck
C.lssec
D.lsuser

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6.单项选择题A system administrator has been asked to lock a specific login account. Which of the following commands is used to accomplish this？（）

A.pwdck
B.usrck
C.chuser
D.rmuser

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7.单项选择题A user would like their shell prompt to reflect the current directory. Which of the following environment variables can be set to accomplish this？（）

A.PS1
B.PATH
C.PROMPT
D.LOCPATH

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8.单项选择题Which of the following commands can be used to get the system ready to physically insert a PCI hot plug adaptor？（）

A.mkdev
B.cfmgr
C.drslot
D.lsslot

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9.单项选择题Which of the following commands can be used to identify all PCI hot plug slots on a server and their characteristics？（）

A.lsattr -l pci
B.lscfg -Cc pci
C.lsconn -p pci -a
D.lsslot -c pci -a

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10.单项选择题A system dump has occured. The LED display shows 0c0. What does this indicate？（）

A.The dump was successful.
B.A system dump is in progress.
C.No system dump device configured.
D.There was an I/O error during the dump.

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Due to operational commitments， a system has a very short backup window during the week， but is not used from Saturday morning through Sunday at Midnight. Which of the following minimizes backup time， while providing the best data restore coverage？（）

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What command would be used to restart the mail daemon？（）

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Given the following script， why does the output come out as an empty line instead of "dog"？（）

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The rootvg disk on a system failed and was replaced. The system was restored using the latest mksysb. However， no files in the /home filesystem were restored. What is the likely cause of this problem？（）

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Given the following scripts， both found in /usr/local/bin， what would the output be when executing /usr/local/bin/script1？（）

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A system administrator would like to modify the system default user characteristics so that each new user will now be assigned （by default） the csh shell rather than the ksh shell. Which of the following actions should be performed？（）

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