Task 1: TCP SEGMENT - 5-6 Task 2: A small office / home office Networking - 7-9 Explained the operation of the NAT enabled router and critically appraise this arrangement. Explained how the workstations may obtain their IP addresses. Explained how the router may obtain the IP address for its Internet interface Task 3: Different Internet protocols- 10-18 HTTP Persistent connections Pipelining Conditional GET / client cachin) Task 4 Integrated services (intserv),core of the internet- 19-22 Explained why it is likely to be difficult to implement intserv in the core of the internet. Task 5: security clauses and control objectives , how to enable security clauses in Organization 23-36 Conclusion 36 References

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