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单选题
Which command while in a vi session will change the currently selected word?（）
A
ec
B
wc
C
ew
D
cw
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Which command while in a vi session will change the currently selected word?()
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The command will generate an error because you cannot change the flash recovery area while the database is open.D
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考题
单选题Which command while in a vi session will change the currently selected word?（）A
ecB
wcC
ewD
cw
考题
单选题While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）A
The data link layerB
The application layerC
The access layerD
The session layerE
The network layer
考题
单选题An administrator runs mktcpip aixhost 172.168.0.50 enO to change the network address， but the command hangs for an extended period of time. Which of the following is the most likely cause of the problem（）A
entO is in a defined stateB
enO is currently activeC
There is no physical network adapter on the systemD
The address 172.168.0.50 is in use by another system
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单选题Which action changes the default editor for ALL users on the system from vi to edit？（）A
Issue the command：export EDITOR=/usr/bin/edit edit each users .profile to change the EDITOR value to /usr/bin/editB
Modify /.profile and change the EDITOR variable to /usr/bin/editC
Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITORD
Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit
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单选题Which action changes the default editor for ALL users on the system from vi to edit of the following？（）A
Issue the command： export EDITOR=/usr/bin/editB
Modify /.profile and change the EDITOR variable to /usr/bin/editC
Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITORD
Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit
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