Every network has a "shape" which is normally referred to its .
A. Bus
B. topology
C. Star
D. Tree
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In a topology, each device has its own cable running to connect the device to a common hub or concentrator.
A. Bus
B. Mesh
C. Star
D. Tree
Writing:The printer in your office keeps breaking down. There are always paper jams (卡纸). Sometimes the printing is blurred and uneven. Write a problem report to the manufacturer about the problem and suggest a solution.
常用的CD-ROM是________。
A.只读型大容量软盘
B.只读型光盘
C.只读型硬盘
D.半导体只读存储器
显示器显示图像的清晰程度,主要取决于显示器的________。
A. 对比度
B. 亮度
C. 尺寸
D.分辨率