$21.$ Whikh eable than ithe hehestideta

urambmasher rute?

a$.$ Multe$-$mode cable

b$.$ Coandil cable

c$.$ Single mode cable

$24.$ Which one converts the efectrical signal, eritering inno the fitre cable, inta an optical slgnaf?

a$.$ Recelver

b$.$ Fiberoptic cable

c$.$ Trangmitter

$25.$ What is the device thet terminates the end of an optical fiber, and enables quick connertion and disconnection?

a$.$ Splicer

b$.$ Connector

c$.$ Attenuator

$26.$ Which choice refers the below statement? "Each wavelength of light travels through the same material at its own particular speed that is different from that of other wavelengths:"

a$.$ Modal dispersion

b$.$ Attenuation

c$.$ Chromatic dispersion

$27.$ A junction of two or more optical fibers that have been melted together with heat generated by an electric arc is called $-$

a$.$ Mechanical splice

b$.$ Fusion spitice

c$.$ Photo splice

$28.$ The typical core diameter for a multimode fibre is:

a$.\backslash (5\backslash$mu $\backslash$mathrm$\{$~m$\}\backslash )$

b$.\backslash (50\backslash$mu $\backslash$mathrm$\{$~m$\}\backslash )$

c$.\backslash (500\backslash$mu $\backslash$mathrm$\{$~m$\}\backslash ).$