1. A TCP client is in the ESTABLISHED state. Answer the following question:

a. The TCP receives a close command from the application, what TCP packet is sent?

b. What is the state of the TCP connection after sending the packet in part a ?

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2. Answer the following questions:

a. Does SCTP use one single stream or multiple streams?

b. Which transport-layer protocol is more appropriate for audio and video, TCP or STCP?

c. Does SCTP uses segments or packets?

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3. An SCTP client is in the Established State. A Close message is received. Answer the following:

a. What is the next state?

b. What is sent out?