Transcript slides

Midterm Exam #1 Review
• Exam time is Feb. 14th during class time.
• The first homework and prior two quiz will be
covered.
• Necessary formulas will be provided in the exam
(but without explanation of notations).
• You need to compute out the final numerical
results in your answer. Do not simply write down
the formula as your answer.
– You can bring a calculator (no computer, iPhone, etc)
– The numbers in exam are easy to compute without
computing of log10() or log2() using calculator
Question Types
– Knowledge questions
– True or false statement (explain why)
– Calculations
Knowledge Question Examples
• What is the relationship between OSI 7 layer model and
the TCP/IP 5 layer model?
• What are the three types of transmission impairment?
• Can you say if a signal is periodic or nonperiodic by
looking at the frequency domain plot? How?
• What does SNR represent? Its formula?
• What is the full name of MODEM? Does Cable Modem or
DSL use baseband communication? Does Ethernet use
baseband communication?
• Why Cable and DSL provide higher downstream
bandwidth than upstream bandwidth?
• What is Hamming distance?
Calculation Problem Examples
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Homework 1 and Quiz 2
CRC error detection code computing (fig. 10.15, 10.16)
Hamming distance computing (Example 10.4)
dB of SNR computing (Example 3.31)
bitRate requirement computing (Example 3.18)
Compute error detection or correction capability
(Example 10.9)
• Compute minimum Hamming distance for a code
scheme (Example 10.5)