单项选择题

In a data warehouse environmem, data is only valuable when it is organized and displayed as (75)

A. data

B. information
C. file
D. document
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单项选择题
Communication networks can be classified in terms of their physical arrangement or (74) . Three common (74) are the star, bus, and ring.
A. structures
B. topologies
C. protocols
D. frames
单项选择题
A computer network links computers together to allow users to share hardware, software, and (73)
A. resource B. file C. information D. data
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