1. In the context of Packet Switching, what is a packet? How are packets transmitted? Describe some of the consequences of using packet switching.
1. In the context of Packet Switching, what is a packet? How are packets
transmitted? Describe some of the consequences of using packet
switching.
2. The Open Systems Interconnection (OSI) Protocol Model describes seven
protocol layers: Application, Presentation, Session, Transport, Network,
Data Link, and Physical. Describe briefly what are the responsibilities of
the Network layer. Give an example of Network layer protocol and explain
its main characteristics.
3.Suppose that web server A sends a hypertext document to a web browser
in machine B. Describe briefly what happens at each protocol layer. What
does encapsulation mean in the context of network protocols?
4.Two well-known protocols at the Transport layer are the Transmission
Control Protocol (TCP), and the User Datagram Protocol (UDP). Explain
their key features and differences.
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