$($a$)$ The following statements below are simply True$/$False$.$ You are therefore required to

answer by stating whether the statement is True$/$False$.$

Life in our increasingly information$-$dependent society requires that we have access to

information at our tips when we need it$,$ where we need it$,$ and in whatever format we need

it$.$ The information is provided to us through our global mesh of communication

networks, whose current implementations$-$such as the present$-$day Internet and ATM

networks$-$ unfortunately, do not have the capacity to support the foreseeable bandwidth

demands.

Optical fibre technology can meet the above bandwidth need because of its potentially

limitless capabilities, as follows:

$($i$)$ huge bandwidth $($over $50$ terabits per second $($Tbps$)),($True$/$False$)(2$ marks$)$

$($ii$)$ low signal attenuation $($as low as $0\mathrm{.}2$ dB$/$km$),$ so repeater$-$less transmission over long

distances is possible, $($True$/$False$)2$ marks$)$

$($iii$)$ immunity to electromagnetic interference, $($True$/$False$)(2$ marks$)$

$($iv$)$high security of signal because of no electromagnetic radiation, so difficult to

eavesdrop, $($True$/$False$)(2$ marks$)$

$($v$)$ no crosstalk and interferences between fibres in the same cable, $($True$/$False$)$

$(2$ marks$)$

$($vi$)$low signal distortion, suitable for carrying digital information, $($True$/$False$).(2$ marks$)$

$($vii$)$ low power requirement, $($True$/$False$).(2$ marks$)$

$($viii$)$ low material usage, small space requirement, light weight, non$-$flammable, costeffective$,($True$/$False$).(2$ marks$)$

$($ix$)$high electrical resistance, so safe to use near high$-$voltage equipment or between areas

with different earth potentials, $($True$/$False$)(2$ marks$)$

$($x$)$ Is figure $1$ below truly illustrates Classes of Transmission Media. $($True$/$False$)$

$(2$ marks$)$