HW5 - IT 420 Homework 5 Wonchul Song 1 A cable modem uses...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
IT 420 Homework 5 – Wonchul Song 1. A cable modem uses 16-PSK to modulate the upstream data. Assume that a user has full use of one 6MHz channel. What is the maximum upstream bit rate? 2^4 = 16-PSK Bit rate = Freq * bit/dot = 6mhz * 4 bit/dot 2. Answer question 12.7 on page 216 of the textbook. Effective data rate is dependent on following things; current load on the provider’s server, user’s access technologies used to connect to provider’s servers etc. ADSL is ‘adaptive’ to users’ environment. 3. Answer question 14.1 on page 253 of the textbook. First approach can be made by using a modified form of multiplexing technique. Second is by engaging in distributed algorithms for controlled access and lastly by using a random access strategy. 4. The Starship Enterprise is visiting a planet where the inhabitants have 6 fingers. Not surprisingly, they use a base 6 numbering system. The planet provides a beam-down coordinate of 3401 (in base 6). Translate this to base 10 so the crew can safely go on shore leave. [Hint: think about place values.]
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern