CPET 2314, Digital Communications Systems
Test Assignments
Text: Data and Network Communications by Michael Miller
Chapter 1 Questions 6, 9, 14 (70,784 bps), 15, 16, 17,
18(000100011 011110111 000000101 010010111 000101111 010000101),
20(70%), 21, 25(Sketch UNZ, URZ, BNZ-AMI, and Manchester – omit BRZ-AMI and
Differential Manchester .)
Chapter 2 Questions 2, 3, 4, 6, 11, 13, 17, 22, 23, 25
Chapter 3 Questions 2, 5, 6, 9, 10, 13, 27, Review Questions 1 (7.32 x 10-5 %) and 2 (99.96 %) on page 85; CRC
Handout, Hamming Code Handout
Test 1 Questions from Chapters 1, 2 and 3; CRC problem (handout); Hamming code
problem (handout); bit stream problem from Lab Exercise 1 (be able to calculate
bit rate from bit time, or vice versa, label (identify) bits, sketch bit stream waveform,
with parity included).
Chapter 4 Questions 2, 4, 5, 10, 11, 23, 27, 30, 33, 34, 35, 38, 39, 44, 47, 48, 49
Chapter 5 Questions 7, 8, 9, 11 (also include RTS, CTS), 13, 16, 17, 28, 32, 33, 40, 41,
42 (700 sps), 43, 44 (45 deg), 45, 46 (32,400 bps), 47 (2000 sps)
Additional question: Explain how an FSK modem works - include a discussion of
modulator/demodulator functions.
Chapter 6 Questions 3, 10, 15(3260 Hz), 18, 19, 25, 34, 35, 44, 46 (also, do expansion)
Test 2 Questions from Chapters 4, 5, and 6; Additional FSK modem question (above) for Chapter 5;
ACIA problem (handout).
Chapter 7 Questions 1, 2, 3, 7, 8, 14, 19, 20, 22, 23 (254), 32, 33, 34, 41(solve for async only)
Chapter 11 Questions 1, 2, 10, 12, 13, 14, 19 (19.7 deg), 20 (20.4 deg), 24, 29, 33,
36 (37.5 mm), 39
Chapter 12 Questions 3, 4, 12, 16, 17, 19, 36, 37, 50, 51, 57, 58, 59, 68 (65.1 deg), 69
Test 3 Questions from Chapters 7, 11 and 12; SDLC problem (handout).
Unless noted otherwise, the only reference allowed during the test is an 8.5” x 11” sized reference sheet which you
have prepared – hand written only, no copied sheets allowed. Using a copy of someone else’s reference sheet or
sharing of reference sheets is not allowed during the test. On each side of the reference sheet, draw a box in upper
right corner and write your name there. In the box, leave room for your instructor to sign his initials. There will be
a 15 point penalty if you fail to hand in your reference sheet with your test.
