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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 A customer indicates that a system is experiencing printing problems. After checking the system, and successfully printing, no problem has been found.  Which of the following procedures should be performed next to further clarify the problem?()

A

 Reboot the system.

B

 Check the file system sizes.

C

 Have the customer repeat the task to recreate the problem.

D

 Inform the customer that no problems were found, and to call back if the problem reoccurs.

单选题 What does the FREQ column show when running the tprof option?()

A

 Total amount of Ticks used by all users 

B

 Total amount of Ticks used by all processes 

C

 Total amount of Ticks used by a specific user 

D

 Total amount of Ticks used by a specific type of process

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 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 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.

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