CS455 Syllabus
Introduction: Types of computer networks
Types of
computer
networks
Broadcast networks:
signal transmitted
by an end-user equipment (
host
) is
received
by
all
hosts
Examples:
Radio, TV, Walkie-talkie...
Wireless networks
Ethernet
(with Ethernet hubs)
Strengths and weaknesses:
Cheap
Cannot
accommodate a
large
number
of
senders
(
interference
!!!)
Switched networks
signal transmitted
by an
end-user equipment
(
host
) is
received
by
only
by the
intended
destination
Examples:
Telephone
Strengths and weaknesses:
Expensive
(telephone network is very expensive to build !)
Is
capable
to accommodate a
large
number
of
senders
(millions of people can use the telephone network
simultaneously
)