BITCNE Computer Networks
Tutorial #1
- What is a protocol? How does the use of the word "protocol"
in computer networking differ from its meaning in other contexts?
- What is a protocol data unit (PDU)?
- What tasks are performed by the transport service module
(or layer)? Name at least two.
- What is the major function of the network service module
(or layer)?
- In the example from the lecture (slide 6), the transport service
layer (or module) split the application data unit into two TPDUs. Give
reasons why it might do this.
- In the lecture, it was claimed (slide 6) that the network service
module did not have to guarantee reliable delivery of packets. Why
not?
- Is it possible that the network layer could additionally split a
TPDU into two or more NPDUs? Give reasons why it might do this, and
describe the format of the resulting NPDUs
Extra Notes
This tutorial (and the accompanying
lecture)
were originally developed from material in Chapter 10 of
Stallings and Van Slyke.
See Prac #1 for the practical exercises
accompanying this tutorial.
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Copyright © 2000 by
Philip Scott,
La Trobe University.