CSIT 220: The Week beginning Sept. 13

• Reading: Chapters 6, 7 and 8 in Computer Networks and Internets (Comer)

• Homework:
• Assume a protocol calls for a frame of
  • 1 byte to start transmission
  • 6 bytes of source address information
  • 6 bytes of destination address information
  • 4096 bytes (4 KB) of data
  • 2 bytes of error checking information
  • 1 byte to end transmission
  For this protocol determine
  1. How many frames are required to send a 1.00 MB (1024 KB) file?
  2. How many bits in each frame?
  3. How long would it take to send a 1.00 MB file at a rate of 56 Kbps using this protocol?
• Read and summarize in your own words two of the following articles.
  • Malware Writers Using Open-Source Tactics
  • Homeland Security CIO Answers Tough Questions
  • Intel calls for Internet overhaul
  • House Panel Gets Tough on Spyware, P2P Piracy
  • Touch-screen voting: Critics warn of post-election problems if no paper trail exists

Due Sept. 21

Thursday:
Error checking and Ethernet