Why is layering used in the design of communication networks

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Information Technology (Spz.)
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• Information Technology (Spz.)
•  
• Q.1. Explain the role of information technology
  in organizational efficiency and
  effectiveness.
•  
• Q.2. Explain the key components of IT Governance
  framework.
•  
• Q.3. Explain the impact of technological
  innovation on growth trajectory of enterprises
• technological capability.

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• Q.4. Explain enterprise model, system model,
  technology model of information architecture.
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• Q.5 (a) Why is layering used in the design of
  communication networks?
•  
• (b) What is packet switching? Why is this method
  used for digital data communication between
  computers?
•  
• (c) What are the advantages of Telnet facility?
•  

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• Q.6 Describe an integrated information system
  for a manufacturing industry.
• Q.7 Explain in detail the architecture of
  database management system.
•  
• Q.8 Write a short Note on
• A IT in Public Sector
• B Print Media
• C Electronic Learning
• D Virtual Classroom

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