How Is My GRE-Tunneled Packet Being Routed?

Computer Security and Networking Problem?

• Introduction: Telephones have been around for over one hundred years. When you want to make a call to someone else then a dedicated connection is set up between you and them. Whilst that call is taking place you both have sole use of the telephone line - no one else can use it. Once the call is finished the connection is broken and the line becomes available for somebody else to use. This method has worked fine for many years and is called 'circuit switching'. The obvious drawback for ‘circuit switching’ is that the line cannot be shared and is usually underutilised. Packet Switching addresses this by splitting the data into packets and not using dedicated lines. Questions: 1. What is packet switching? 2. How is the application data packaged in order to be transmitted across the internetworks? 3. How are packets routed? 4. What is meant by Window size and why are windows used by TCP in packet switching networks? 5. What is a handshake, why are they required and what is the process undertaken for a handshake in packet switching Networks? 6. How does TCP deal with congestion in Packet Switching Networks? 7. What are the advantages of Packet Switching Networks? 8. What are the disadvantages of Packet Switching Networks?

• Answer:

  Hmmm... smells like homework. A couple of answers are in the question. The rest are on wikipedia.