Chem_402_Homework_2_Fall_2010 - bandwidths of 56kbps(phone...

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Chem 402: Chemical Information Systems Dr. George A. Papadantonakis Fall 2010 Homework No. 2 Due on Friday, September 17, 2010 There are in all 132 bytes in the message below, or 1056 bits, This is the first assignment from the Chem 402 class. It is about packets and their transmission over links with different bandwidths. Each letter of the message above represents 1 byte (8 bits). That includes blanks and periods. (a) (6 points) Find the time it will take to transmit this message on end to end links with
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Unformatted text preview: bandwidths of 56kbps (phone modem), 1.5Mbps and 4Mbps(DSL), assuming circuit switching. (b)(9 points) If you were to break up the message into packets of size 20 bytes each, with 4 bytes for header, how long will it take to reach the destination if it must go through all three links mentioned above, and the routers are operating in store and forward mode....
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This note was uploaded on 09/23/2010 for the course CHEM 402 taught by Professor Staff during the Spring '08 term at Ill. Chicago.

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