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单选题 When planning to access the on-line documentation from a remote client, which of the following procedures should be performed on the server?()

A

Install and configure the HTTPServer. 

B

Add the name(s) of the client(s) to the httplite.conf file. 

C

Add the names of any clients expecting to access the documentation to the /etc/hosts file. 

D

No action is required.

单选题 Which of the following conclusions is most appropriate to draw to describe why du shows fewer blocks used than df?()

A

 The df command only counts the number of disk blocks and superblocks. 

B

 The df command ignores space used for inodes, gnodes, and vnodes.

C

 The du command does not take into account filesystem metadata. 

D

 The du command counts indirect blocks and superblocks in its calculations. 

单选题 On a newly installed AIX V4 machine, which of the following default values applies to the ipforwarding network option?()

A

 The ipforwarding is off by default. 

B

 The ipforwarding is set on by default. 

C

 The value is dynamically determined at boot time by DHCP. 

D

 The value is equal to the setting of the directed_broadcast runtime attribute.

单选题 Communication with a remote host has failed.  Which command is LEAST helpful in isolating the failure?()

A

 ping RemoteHostName 

B

 ping RemoteHostIPaddr 

C

 nslookup RemoteHostName 

D

 ping lo0

单选题 A system administrator needs to upgrade the Oracle database from Version 7 to Version 8.  Which of the following scheduling concerns should be considered?()

A

Schedule enough down time to backup, upgrade and reboot. 

B

Backup, upgrade, then schedule enough down time to reboot the system.

C

Backup, then schedule enough down time to upgrade and reboot the system. 

D

There are no scheduling concerns because no down time is required.

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