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單項選擇題

Circuit-switching technology is used in Publish Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and code Division Multiple Access (CMDA) . It is a ( ) information transfer mode.

A. connection oriented
B. connectionless
C. high bandwidth utilization
D.poor real-time

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單項選擇題

Information theory is related to the quantification of information. This was developed by Claude E. Shannon to who found fundamental limits on ( ) operations such as compressing data and on reliably storing and communicating data.

A. signal
B. data
C. information
D. signal processing

單項選擇題

某項目的項目經(jīng)理在進行項目范圍變更時,在對項目的技術(shù)和管理文件做了必要的修改后，他下一步應(yīng)該（）。

A、及時通知項目干系人
B、修改公司的知識管理系統(tǒng)
C、獲取客戶的正式認(rèn)可
D、獲得政府認(rèn)可

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