EE450,
Fall
2006, Zahid
EE450: Computer Networks
Homework #1,
Fall
2006
Due
Tuesday , September 5
Reading Assignment:
Read Chapter 1, entire
Text Problems:
Chapter 1, Page 63: Problems 4, 6 and 7
Supplementary Problems:
1.
A collection of 5 nodes is to be connected. Between each pair of nodes, the designers
may put a highspeed line, a mediumspeed line, a lowspeed line or no line. If it
takes 100 msec of computer time to generate and inspect each topology, how long
will it take to inspect all of them? Explain (i.e. I am not looking for answers only)
2.
Assume you have "n" hosts in a network. How many links are required for a
a)
Fully connected mesh topology
b)
Ring topology
c)
Bus topology
d)
Hub topology
3.
How long does it take to transmit
x
KB over a
y
Mbps link? Give your answer as a
ratio of
x
and
y
.
4.
Calculate the total time required to transfer a 1000KB file in the following cases,
assuming an RTT of 100 ms, a packet size of 1 KB data, and an initial 2xRTT of
"handshaking" before data is sent. (Total time = handshaking + transmit time of
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 Fall '06
 Zahid
 Computer network, Network topology, Zahid, equal transmit delay, topology ring topology, propagation time delay

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