商务信息与沟通技术报告.docx

contents page Summary 2 1. Introduction 3 2. Decision making at strategic, tactical and operational levels in BW. 3 2.1 internal sources 3 2.2 external sources 4 3. Identify and evaluat decision-making at strategic, tactical and operational levels 4 4. Three types of information system 6 5. Compare and contrast three data communication systems. 6 5.1 Local area network 6 5.2 Wide Area Network 7 5.3 internets 7 6. Describe three data communication systems for BW. 7 7. Identify and evaluate three