Exam #2 Study Guide
EcpE 489, Fall 2002 (Russell)
DATE AND TIME: Tuesday, October
15, during the usual class time in our usual classroom.
SUBJECT MATTER: The exam will cover the lecture
material up to, and including, the lecture on October 8. It will
cover homework assignments to October 1.
SUGGESTIONS: Start or join a study group. Study
together and share lecture notes. For this first exam, concentrate on answering
conceptual questions, some of which will be in essay form.
General Information
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Exams are closed book. One 81/2 by 11 sheet of
paper (crib sheet) can be used for reference to study notes. No other information
is allowed.
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Bring your palm computers and/or calculators to
class. They are usually not needed but if they are, you will be specifically
instructed to do so at the start of the exam.
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Selection of exam problems will give emphasis
to the topics emphasized in the lectures and the problems assigned as homework.
Example Study Topics (test questions
will be taken from these)
Explain Hubs, Bridges, Switches, and Routers. Be sure to include
MAC and IP addresses.
What do we mean by hop-to-hop versus end-to-end network communications?
What layers are involved in each?
Explain the organization of SDUs and PDUs and how they relate to layers
and frames.
Describe the differences between flow and congestion
How are MAC and IP addresses used in a network. What about the
port number?
Concepts (layers, PDUs, SDUs, Payloads, bit streams)
Asynchronous data block at the physical layer
Data Link Layer functions
Connection vs connectionless
Acknowledged versus unacknowledged service
Quality of Service
Efficiency and Quality of Service
LANs connected by Routers (routing tables)
Datagrams
Technology dependent and independent layers
Peer-to-Peer protocols
Adaptation Functions
Message size issues and solutions
Reliability and sequencing
Flow Control and Timing
Error recovery strategies (ARQ, end-to-end and hop-to-hop)
ARQ Protocols
Stop and Wait ARQ
Delay
Sliding window protocols
Piggybacking