NTNU Multimedia Networking Re

Hello, I need explanations to the answers of this exercise. I have both the original questions and the solution attached. I will paste the questions below as well:

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In
this application, the sender uses normal RTP and transmits
G.722-encoded voice at 48 Kbps. The application collects encoded data
in 16 millisecond chunks.

Question
1.
What
is the rate at which data is generated at the sender (in bytes)?

Question
2.
What
is the size of the IP datagrams sent? You must clearly show the steps
in how you calculated your answer and what elements the datagram
consists of.

Question
3.

Explain how an arbitrary RTP packet in the application will look
like. Use actual values from the application when possible. Include
the size of the fields and elements of the packet.

Loss
recovery schemes can be used to preserve acceptable audio quality in
the presence of packet loss. We will focus on three types of loss
anticipation schemes: forward error correction (FEC) with redundant
encoded chunks, FEC with redundant lower-resolution audio stream, and
interleaving.

Question
4.
For
each of the three schemes listed in the previous paragraph, show how
much additional bandwidth each of them require of our application.
For the first type of FEC, suppose a redundant chunk is generated for
every five original chunks. For the other type, suppose GSM is used
for the low-bit rate encoded stream. For each scheme, include both
the new transmission rate and the percentage increase.

Question
5.
For
each of the three schemes, explain what happens if the first packet
is lost in every group of five packets. Which scheme will have the
better audio quality?

Question
6.
Make
an illustration of the scenario in question 5 for FEC with redundant
encoded chunks. Use the same n value as before. The figure should be
made such that it’s clear that you understand how the scheme works.

Question
7.
For
each of the three schemes, explain what happens if the first packet
is lost in every group of two packets. Which scheme will have the
better audio quality?

Question
8.
Make
an illustration of the scenario in question 7 for FEC with redundant
lower-resolution audio stream.
The
figure should be made such that it’s clear that the student
understands how the scheme works.

Question
9.
For
each of the FEC schemes, how much playback delay does each scheme
add? What can be said about the delay of the interleaving scheme?

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