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3213_Final_Winter2008 - Department of Computer Science and...

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1 Department of Computer Science and Engineering COSC 3213: Computer Networks I (Winter 2008) Instructor: N. Vlajic Date: April 8, 2008 Final Examination Instructions: Examination time: 180 min. Print your name and CS student number in the space provided below. This examination is closed book and closed notes. Calculator and one-sided cheat-sheet are allowed. There are 8 questions. The points for each question are given in square brackets, next to the question title. The overall maximum score is 100. Answer each question in the space provided. If you need to continue an answer onto the last page, clearly indicate that and label the continuation with the question number. FIRST NAME: ___________________________ LAST NAME: ___________________________ STUDENT #: ___________________________ Question Points 1 / 15 2 / 15 3 / 10 4 / 13 5 / 15 6 / 12 7 / 14 8 / 6 Total / 100
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1. Multiple Choice [15 points] Circle the letter beside the choice that is the best answer for each question. For each question choose only ONE answer. (1.1) To deliver a message to the correct application program running on a host, the ___________ address must be consulted. (a) physical (b) IP (c) port (d) DNS (1.2) __________ is a type of transmission impairment in which a signal loses its form/shape due to the different propagation speeds of each frequency that makes up the given signal. (a) attenuation (b) delay distortion (c) thermal noise (d) cross talk (1.3) A signal that is digital and periodic in time domain can be represented by __________ in frequency domain. (a) one single spike (b) a series of spikes (c) a continuous function (d) none of the above (1.4) For a _________________ , the Nyquist bit rate formula defines the respective theoretical maximum bit rate. (a) noiseless signal (b) noisy signal (c) noiseless channel (d) noisy channel (1.5) Which of the following encoding methods does not provide for synchronization in a long sequences of 1s? (a)
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3213_Final_Winter2008 - Department of Computer Science and...

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