Which of the following conclusions does information in Parag

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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. 

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During the implement phase， systems acceptance testing does which of the following for the customer？ Select exactly 1 answer（s） from the following：（）。

• A、installation， configuration， and testing， as well as the commissioning of tools and processes in accordance with the operations implementation plan
• B、provision of information regarding customer-specified design requirements and configuration
• C、the migration of network services from an existing state to a future state in accordance with the migration plan
• D、the provision of an objective means of measuring system operability and functionality

第10题：

Which of the following is a secure method of copying information over a public network?（）

• A、SCP
• B、SMTP
• C、SNMP
• D、TFTP