CS4984 Quiz for Unit 5 Version A

Instructions

You should take this quiz now, and send in your answers to the instructor (4984i@fox.cs.vt.edu) by email as soon as you are done. That should take less than an hour and so you are required to not spend more time than 90 minutes. You can refer to your notes and the readings (textbook, articles) and Internet items that are part of or referenced by the courseware. Be sure to have "4984" and the quiz ID (e.g., 1A, 2B) in the "Subject:" part of your message.

The Honor Code is in effect. All work on this quiz should be your own. Be sure to put your name and student ID at the top of your set of answers. Do NOT send a copy of your answers to anyone else, or look at anyone else's answers, anytime during this course.

Questions

  1. Consider CU-SeeMe and the 2 systems shown during the field trip: IVS (which you saw running under MBONE), and Sun's ShowMe. For each of the three, give two advantages relative to the other two. Hint: consider such issues as price, network bandwidth, quality, functionality, or use of computer resources.
  2. What important early multimedia conferencing architecture allowed a client to call for a movie, and have it provided by any one of several servers that might make it available? Please explain how this worked and what type of network was involved. What type of general service is this an example of?
  3. Briefly explain the requirement of seamlessness in videoconferencing.
  4. Briefly describe two dimensions that one can use to categorize shared applications which work in videoconferencing environments. Hint: Discuss two architectural choices that one can make.
  5. Briefly discuss three aspects of a "connection agreement" as would be needed for a virtual connection supported by multimedia system services.